LIVIVO - Search results -

Search results

Result 1 - 10 of total 95

Search options

Article ; Online: Cross-timescale interaction of nonstationary hydrological responses in subtropical mountainous watersheds

Hao, R. / Wang, J. / Li, Xunjing / Huang, X. / Cai, Z.W. / Shi, Z.H.

Journal of Hydrology. 2023 Oct., v. 625 p.130167-

2023

Abstract: Hydrological responses possess watershed systematicity and divergent features at various time scales, but how to quantitatively capture the cross-timescale interaction of nonstationary discharge and sediment concentration is unclear, thus limiting ... ...

Abstract	Hydrological responses possess watershed systematicity and divergent features at various time scales, but how to quantitatively capture the cross-timescale interaction of nonstationary discharge and sediment concentration is unclear, thus limiting insight into hydrological responses to human alterations and stochastic hydroclimatic drivers. The present study analyzed the regimes of inter-annual, intra-annual, and event-scale hydrological responses using 40–60 years data from 15 subtropical watersheds. Bayesian networks of discharge and sediment concentration were constructed, incorporating watershed characteristics, climate effects, and three timescale hydrological indicators, to implement the nonlinear probability prediction. Broadly, annual discharge and sediment concentration followed a decreasing trend, with a key inflection in 2000. Hydrological nonstationarity was diagnosed in terms of magnitude, frequency, and time based on five temporal indicators and transient types of extreme events. In Bayesian networks, the interactions of hydrological indicators were synergistic, with intra-annual hydrological signatures as intermediate nodes between external drivers and annual trends, highly explaining the inconsistent discharge and sediment concentration. The sensitivity of marginal distribution in discharge and sediment concentration to watershed surface alterations was ranked in the terminal position. Nevertheless, the implementation of forest restoration could cause a 90.36% probability of enabling sediment concentration in a decreasing or stationary state under the restrictive scenario. These findings provide refinements in hydrological dynamic causality at different timescales for guiding watershed risk management.
Keywords	Bayesian theory ; climate ; forest restoration ; humans ; hydrology ; mountains ; prediction ; probability ; risk management ; sediments ; watersheds ; Temporal variability ; Dynamic constraint ; Nonlinear ; Multiscale analysis ; Bayesian network
Language	English
Dates of publication	2023-10
Publishing place	Elsevier B.V.
Document type	Article ; Online
ZDB-ID	1473173-3
ISSN	1879-2707 ; 0022-1694
ISSN (online)	1879-2707
ISSN	0022-1694
DOI	10.1016/j.jhydrol.2023.130167
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- Full text online
- Order with fees

Article: [Application of image-based artificial intelligence in rhinology].

Chao, W H / Luo, X / Liang, G X / Zhang, H / Yuan, T / Wu, Q W / Shi, Z H / Yang, Q T

Zhonghua er bi yan hou tou jing wai ke za zhi = Chinese journal of otorhinolaryngology head and neck surgery

2024 Volume 59, Issue 3, Page(s) 277–283

MeSH term(s)	Humans ; Artificial Intelligence ; Otolaryngology
Language	Chinese
Publishing date	2024-04-01
Publishing country	China
Document type	Journal Article
ZDB-ID	2195655-8
ISSN	1673-0860
ISSN	1673-0860
DOI	10.3760/cma.j.cn115330-20231025-00169
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 3733: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Stoichiometric regulations of soil respiration and its temperature sensitivity under erosion and deposition conditions

Tong, L.S / Xiao, H.B / Xu, K / Zhan, Y.M / Shi, Z.H

Agriculture, ecosystems & environment. 2021 Oct. 01, v. 319

2021

Abstract: Soil erosion not only affects the redistribution of soil materials but also changes soil respiration (Rₛ) and its temperature sensitivity (Q₁₀), which plays a significant role in the carbon cycle of terrestrial ecosystem. To explore the stoichiometric ... ...

Abstract	Soil erosion not only affects the redistribution of soil materials but also changes soil respiration (Rₛ) and its temperature sensitivity (Q₁₀), which plays a significant role in the carbon cycle of terrestrial ecosystem. To explore the stoichiometric regulations of Rₛ and Q₁₀ under erosion and deposition conditions, typical eroded (croplands) and deposited sites (check dams) were selected in the Luoyugou watershed of the Chinese Loess Plateau. In situ Rₛ, soil temperature and moisture were monitored. The results showed that soil deposition decreased soil organic carbon, total nitrogen, heavy fraction organic carbon and dissolved organic nitrogen by 20.0%, 26.7%, 20.1% and 49.1%, respectively. However, the higher ratios of carbon:nitrogen and labile carbon:organic carbon were observed in the deposited sites due to the accelerated loss of dissolved nitrogen and the selective transport of light fraction organic matter. The Rₛ displayed a decreasing trend from July to December, and soil temperature explained 69.5–93.6% of the temporal variation in Rₛ. The mean Rₛ was 2.18 and 2.89 μmol m⁻² s⁻¹ in the eroded and deposited sites, respectively, and the average Q₁₀ was 2.49 and 3.38. Multiple stepwise regression analysis showed that soil organic carbon:total nitrogen and light fraction organic carbon totally explained 48.9% of the Rₛ variation, and the main control factors for Q₁₀ were dissolved organic carbon: total organic carbon (34.6%), soil temperature (17.0%) and dissolved organic carbon (10.0%). Our results suggested that the ratios of carbon:nitrogen and labile carbon:organic carbon play an important role in regulating Rₛ and Q₁₀, and the increase in carbon:nitrogen ratios induced by sediment deposition contributes to increasing Rₛ and Q₁₀. We believe that the effects of erosion and deposition on Rₛ and Q₁₀ revealed in the study will contribute to a better understanding of the terrestrial ecosystem carbon cycle.
Keywords	agriculture ; carbon cycle ; environment ; regression analysis ; sediment deposition ; soil erosion ; soil organic carbon ; soil respiration ; soil temperature ; stoichiometry ; temporal variation ; terrestrial ecosystems ; total organic carbon ; watersheds ; China
Language	English
Dates of publication	2021-1001
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	602345-9
ISSN	1873-2305 ; 0167-8809
ISSN (online)	1873-2305
ISSN	0167-8809
DOI	10.1016/j.agee.2021.107507
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3803: Show issues
Zs Lan AEE: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Soil aggregates are key factors that regulate erosion-related carbon loss in citrus orchards of southern China: Bare land vs. grass-covered land

Zheng, J.Y / Zhao, J.S / Shi, Z.H / Wang, L

Agriculture, ecosystems & environment. 2021 Apr. 01, v. 309

2021

Abstract: Water erosion induces a wide variation in organic carbon (OC) loss in orchard agroecosystems due to high anthropogenic disturbance. Grass cover, a common agricultural practice, can both suppress OC transport by reducing erosive rainfall and runoff, and ... ...

Abstract	Water erosion induces a wide variation in organic carbon (OC) loss in orchard agroecosystems due to high anthropogenic disturbance. Grass cover, a common agricultural practice, can both suppress OC transport by reducing erosive rainfall and runoff, and enhance the amount of OC in soil by increasing OC inputs. These different effects on OC loss call for a deeper understanding of the process and drivers of OC loss under grass cover during water erosion processes. Hence, we conducted a simulated rainfall experiment under bare land (BL) and grass cover in orchards to analyse the direct and indirect effects of grass cover, soil aggregate properties, runoff and sediment yield on OC loss using structural equation modelling (SEM). The results demonstrated that grass cover reduced sediment and runoff by 97.84–98.81 % and 47.28–82.12 %, respectively, and correspondingly reduced the loss of 97.21–99.24 % soil organic carbon (SOC) and 83.55–92.76 % dissolved organic carbon (DOC) compared to BL. The SEM results showed that sediment, as opposed to runoff, was the main pathway of OC loss and grass cover regulated total organic carbon (TOC) loss by varying soil aggregate properties rather than by changing erosive forces. Specifically, the total effect of the soil aggregate stability and SOC content in aggregates under grass cover on TOC loss was negative (-0.21 and -1.14, respectively). Moreover, the increasing percentage of >5 mm soil aggregates contributed to reducing SOC and DOC losses, while the increasing percentage of 0.5−0.25 mm soil aggregates aggravated SOC and DOC losses. The results from this study emphasize that grass cover is a convenient and effective measure for reducing OC loss in orchards; moreover, studying the effect of multiple-factor interactions on OC loss will provide insights and improve predictions of the global carbon cycle.
Keywords	Citrus ; aggregate stability ; agriculture ; agroecosystems ; anthropogenic activities ; carbon cycle ; dissolved organic carbon ; environment ; forces ; grasses ; orchards ; prediction ; rain ; rainfall simulation ; runoff ; sediment yield ; sediments ; soil aggregates ; soil organic carbon ; structural equation modeling ; total organic carbon ; water erosion ; China
Language	English
Dates of publication	2021-0401
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-light
ZDB-ID	602345-9
ISSN	1873-2305 ; 0167-8809
ISSN (online)	1873-2305
ISSN	0167-8809
DOI	10.1016/j.agee.2020.107254
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3803: Show issues
Zs Lan AEE: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: High-frequency monitoring of neonicotinoids dynamics in soil-water systems during hydrological processes

Niu, Y.H. / Wang, L. / Wang, Z. / Yu, S.X. / Zheng, J.Y. / Shi, Z.H.

Environmental pollution. 2022 Jan. 01, v. 292

2022

Abstract: Neonicotinoids pollution poses a serious threat to aquatic ecosystems. However, there is currently little knowledge about how neonicotinoids are transferred from the agricultural environment to the aquatic environment. Here, we conducted in situ high- ... ...

Abstract	Neonicotinoids pollution poses a serious threat to aquatic ecosystems. However, there is currently little knowledge about how neonicotinoids are transferred from the agricultural environment to the aquatic environment. Here, we conducted in situ high-frequency monitoring of neonicotinoids in soil-water systems along the hydrological flow path during rainfall to explore the horizontal and vertical transport mechanisms of neonicotinoids. The collected samples included 240 surface runoff, 128 subsurface runoff, 60 eroded sediment, 120 soil and 144 soil solution, which were used to analyse neonicotinoids concentrations. Surface runoff, subsurface runoff and eroded sediment were the three main paths for the horizontal migration of neonicotinoids. In the CK (citrus orchards without grass cover) and grass-covered citrus orchards, there are 15.89% and 2.29% of the applied neonicotinoids were transported with surface runoff, respectively. While in the CK and grass-covered citrus orchards, there are only 1.23% and 0.19% of the applied neonicotinoids were transported with eroded sediment and subsurface runoff. Although the amount of neonicotinoids lost along with eroded sediment was small, the concentration of neonicotinoids in eroded sediment was two orders of magnitude higher than the concentration of neonicotinoids in sediments of the surface water. Meanwhile, neonicotinoids migrated vertically in soil due to water infiltration. In the CK and grass-covered citrus orchards, there are 57.64% and 24.36% of the applied neonicotinoids were retained in soil and soil solution, respectively, and their concentration decreased as soil depth increased. Another noteworthy phenomenon is that more neonicotinoids migrated to deeper soil layers under grass cover compared with no grass cover because grass roots promoted the formation of cracks and vertical preferential flow. Our results are expected to improve the accuracy of neonicotinoids pollution prediction by considering migration paths, including surface and subsurface runoff and eroded sediment.
Keywords	Citrus ; aquatic environment ; grasses ; migratory behavior ; neonicotinoid insecticides ; pollution ; prediction ; preferential flow ; rain ; runoff ; sediments ; soil depth ; soil solution ; soil water ; subsurface flow ; surface water
Language	English
Dates of publication	2022-0101
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.118219
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 4136: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Physical structure and rainfall controls on subsurface hydrological connectivity in hillslope-riparian-stream continuums

Xiao, H.B. / Xu, K. / Zhan, Y.M. / Wang, J. / Wang, Z. / Wang, L. / Shi, Z.H.

Catena. 2022 July, v. 214

2022

Abstract: The hydrological connectivity of hillslope-riparian-stream (HRS) continuums is crucial for runoff generation and solute transport. The achievement of water resource protection and water quality improvement requires a systematic understanding of the ... ...

Abstract	The hydrological connectivity of hillslope-riparian-stream (HRS) continuums is crucial for runoff generation and solute transport. The achievement of water resource protection and water quality improvement requires a systematic understanding of the structure and rainfall controls on HRS connectivity. Herein, two HRS continuums with different soil depths and slopes (HRS-1: thin soil depth and steep slope; HRS-2: thick soil depth and gentle slope) were established. We monitored the soil moisture from the surface to the soil-bedrock interface at 15 min intervals from March to June 2021. The HRS connectivity was analyzed based on soil saturation conditions, and partial least squares regression (PLSR) was used to reveal the relationships between rainfall and HRS connectivity. The results showed that the time required to establish hydrological connectivity in HRS-1 was shorter than that in HRS-2, which indicated that the contribution to runoff of the HRS continuum with a thin soil depth and steep slope was dominant during the early stage of rainstorm. As rainfall intensity increased, the required time was shortened exponentially due to the changes in hydrological connectivity patterns. In addition, the higher connectivity strength (i.e., the magnitude of HRS connectivity) was observed in the HRS-2 than that in the HRS-1 during heavy rainfall events. The PLSR analysis showed that rainfall amount, 30 min maximum rainfall intensity, 15 min maximum rainfall intensity, and rainfall duration were important controls affecting connectivity strength. Rainfall amount and peak rainfall intensity exerted more important effects than did antecedent soil moisture on the connectivity strength. Furthermore, there was a clear rainfall threshold for HRS connectivity, from 14.8 mm in HRS-1 to 21.1 mm in HRS-2. The increased soil depth and reduced slope enhanced the rainfall threshold of HRS connectivity. Our results indicate that the physical structure of the HRS continuum exerts a primary control on the rainfall threshold.
Keywords	catenas ; rain ; rain intensity ; rainfall duration ; runoff ; soil depth ; soil water ; solutes ; water quality
Language	English
Dates of publication	2022-07
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	519608-5
ISSN	1872-6887 ; 0008-7769 ; 0341-8162
ISSN (online)	1872-6887 ; 0008-7769
ISSN	0341-8162
DOI	10.1016/j.catena.2022.106286
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3389: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: First Report of Botrytis Gray Mold on Red Bayberry in China.

Zhang, Z F / Li, H Y / Shi, Z H

Plant disease

2019 Volume 92, Issue 9, Page(s) 1364

Abstract: Red bayberry (Myrica rubra Sieb. et Zucc) is a special fruit produced in southeastern China. Heavy losses due to postharvest rot and short shelf-life have negatively affected farmers' incomes. In June 2007, a survey was conducted to determine the causal ... ...

Abstract	Red bayberry (Myrica rubra Sieb. et Zucc) is a special fruit produced in southeastern China. Heavy losses due to postharvest rot and short shelf-life have negatively affected farmers' incomes. In June 2007, a survey was conducted to determine the causal agents of red bayberry (cv. Dongkui) rot in Linhai City, Zhejiang Province. Only a few soft rot fruits with typical gray mold of Botrytis cinerea were found on trees, but 74% (266 of 360) of the fruits that appeared disease free during harvest showed a mass of gray mold after 5 days in storage at 22°C. Brown conidiophores bore botryose heads of hyaline, ellipsoid, unicellular conidia, measuring 9.1 to 16.1 × 8.6 to 11.0 μm. Mycelia were initially whitish and turned gray with age. Black, irregular sclerotia were formed in potato dextrose agar medium. Such features suggested B. cinerea infection (1). Pathogenicity was confirmed by inoculation of 20 healthy red bayberries with a conidial suspension (10
Language	English
Publishing date	2019-02-15
Publishing country	United States
Document type	Journal Article
ZDB-ID	754182-x
ISSN	0191-2917
ISSN	0191-2917
DOI	10.1094/PDIS-92-9-1364A
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Bonn / Germany

Z 2043: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Subsurface hydrological connectivity controls nitrate export flux in a hilly catchment.

Xiao, H B / Zhou, C / Hu, X D / Wang, J / Wang, L / Huang, J Q / Yang, F T / Zhao, J S / Shi, Z H

Water research

2024 Volume 253, Page(s) 121308

Abstract: Subsurface runoff represents the main pathway of nitrate transport in hilly catchments. The magnitude of nitrate export from a source area is closely related to subsurface hydrological connectivity, which refers to the linkage of separate regions of a ... ...

Abstract	Subsurface runoff represents the main pathway of nitrate transport in hilly catchments. The magnitude of nitrate export from a source area is closely related to subsurface hydrological connectivity, which refers to the linkage of separate regions of a catchment via subsurface runoff. However, understanding of how subsurface hydrological connectivity regulates catchment nitrate export remains insufficient. This study conducted high-frequency monitoring of shallow groundwater in a hilly catchment over 17 months. Subsurface hydrological connectivity of the catchment over 38 rainfall events was analyzed by combining topography-based upscaling of shallow groundwater and graph theory. Moreover, cross-correlation analysis was used to evaluate the time-series similarity between subsurface hydrological connectivity and nitrate flux during rainfall events. The results showed that the maximum subsurface hydrological connectivity during 32 out of 38 rainfall events was below 0.5. Although subsurface flow paths (i.e., the pathways of lateral subsurface runoff) exhibited clear dynamic extension and contraction during rainfall events, most areas in the catchment did not establish subsurface hydrological connectivity with the stream. The primary pattern of nitrate export was flushing (44.7%), followed by dilution (34.2%), and chemostatic behavior (21.1%). A threshold relationship between subsurface hydrological connectivity and nitrate flux was identified, with nitrate flux rapidly increasing after the subsurface connectivity strength exceeded 0.121. Moreover, the median value of cross-correlation coefficients reached 0.67, which indicated subsurface hydrological connectivity exerts a strong control on nitrate flux. However, this control effect is not constant and it increases with rainfall amount and intensity as a power function. The results of this study provide comprehensive insights into the subsurface hydrological control of catchment nitrate export.
MeSH term(s)	Nitrates/analysis ; Water Movements ; Rivers ; Groundwater ; Hydrology
Chemical Substances	Nitrates
Language	English
Publishing date	2024-02-12
Publishing country	England
Document type	Journal Article
ZDB-ID	202613-2
ISSN	1879-2448 ; 0043-1354
ISSN (online)	1879-2448
ISSN	0043-1354
DOI	10.1016/j.watres.2024.121308
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 78/260: Show issues
Z 3381: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article ; Online: High-frequency monitoring of neonicotinoids dynamics in soil-water systems during hydrological processes.

Niu, Y H / Wang, L / Wang, Z / Yu, S X / Zheng, J Y / Shi, Z H

Environmental pollution (Barking, Essex : 1987)

2021 Volume 292, Issue Pt A, Page(s) 118219

Abstract	Neonicotinoids pollution poses a serious threat to aquatic ecosystems. However, there is currently little knowledge about how neonicotinoids are transferred from the agricultural environment to the aquatic environment. Here, we conducted in situ high-frequency monitoring of neonicotinoids in soil-water systems along the hydrological flow path during rainfall to explore the horizontal and vertical transport mechanisms of neonicotinoids. The collected samples included 240 surface runoff, 128 subsurface runoff, 60 eroded sediment, 120 soil and 144 soil solution, which were used to analyse neonicotinoids concentrations. Surface runoff, subsurface runoff and eroded sediment were the three main paths for the horizontal migration of neonicotinoids. In the CK (citrus orchards without grass cover) and grass-covered citrus orchards, there are 15.89% and 2.29% of the applied neonicotinoids were transported with surface runoff, respectively. While in the CK and grass-covered citrus orchards, there are only 1.23% and 0.19% of the applied neonicotinoids were transported with eroded sediment and subsurface runoff. Although the amount of neonicotinoids lost along with eroded sediment was small, the concentration of neonicotinoids in eroded sediment was two orders of magnitude higher than the concentration of neonicotinoids in sediments of the surface water. Meanwhile, neonicotinoids migrated vertically in soil due to water infiltration. In the CK and grass-covered citrus orchards, there are 57.64% and 24.36% of the applied neonicotinoids were retained in soil and soil solution, respectively, and their concentration decreased as soil depth increased. Another noteworthy phenomenon is that more neonicotinoids migrated to deeper soil layers under grass cover compared with no grass cover because grass roots promoted the formation of cracks and vertical preferential flow. Our results are expected to improve the accuracy of neonicotinoids pollution prediction by considering migration paths, including surface and subsurface runoff and eroded sediment.
MeSH term(s)	Ecosystem ; Environmental Monitoring ; Neonicotinoids ; Rain ; Soil ; Water ; Water Movements
Chemical Substances	Neonicotinoids ; Soil ; Water (059QF0KO0R)
Language	English
Publishing date	2021-09-22
Publishing country	England
Document type	Journal Article
ZDB-ID	280652-6
ISSN	1873-6424 ; 0013-9327 ; 0269-7491
ISSN (online)	1873-6424
ISSN	0013-9327 ; 0269-7491
DOI	10.1016/j.envpol.2021.118219
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Cologne/Königswinter

Zs.A 2599: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾

Article: A synthesized approach for estimating the C-factor of RUSLE for a mixed-landscape watershed: A case study in the Gongshui watershed, southern China

Yan, H / Wang, L / Wang, T.W / Wang, Z / Shi, Z.H

Agriculture, ecosystems & environment. 2020 Oct. 01, v. 301

2020

Abstract: The cover-management factor (C-factor) in the revised universal soil loss equation (RUSLE) indicates the effects of vegetation cover and management practices on water erosion. The conditions governing the C-factor can be managed by farmers and managers ... ...

Abstract	The cover-management factor (C-factor) in the revised universal soil loss equation (RUSLE) indicates the effects of vegetation cover and management practices on water erosion. The conditions governing the C-factor can be managed by farmers and managers to affect soil loss and soil carbon cycle. Currently, the most common approach for estimating the C-factor on large scales is using the normalized difference vegetation index (NDVI) individually, which cannot precisely characterize the differences in the C-factor in various land-use types with the same degree of vegetation coverage. We developed a multiple-land-use synthesized C-factor (MLUS-C) model to capture the dynamics of the C-factor with a high spatio-temporal resolution for mixed-landscape watersheds. In this model, space-time fusion was executed based on multi-source remotely sensed data to estimate the phenological succession of vegetation cover, and the impacts of farmland management on large-scale evaluation of the C-factor were considered. A case study was conducted in the Gongshui watershed, southern China, where the dataset of precipitation and sediment yield covered a period of 11 years. We validated the simulation from the MLUS-C model and compared it with the results from NDVI-only approaches via conversion from the C-factor to sediment yield. The validation results showed that the MLUS-C model significantly improved the simulation accuracy and model adaptability. The root mean square error of our model was 71.5-95.5% lower than those of NDVI-only approaches. Our model has an advantage in estimating the C-factor in heterogeneous landscapes and provides a basis for implementing measurements to efficiently reduce soil loss.
Keywords	Revised Universal Soil Loss Equation ; accuracy ; administrative management ; agricultural land ; agriculture ; carbon cycle ; case studies ; data collection ; dynamics ; ecosystems ; environment ; farmers ; landscapes ; managers ; multiple land use ; normalized difference vegetation index ; phenology ; sediment yield ; space and time ; vegetation cover ; water erosion ; watersheds ; China
Language	English
Dates of publication	2020-1001
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-light
ZDB-ID	602345-9
ISSN	1873-2305 ; 0167-8809
ISSN (online)	1873-2305
ISSN	0167-8809
DOI	10.1016/j.agee.2020.107009
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3803: Show issues
Zs Lan AEE: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

To top

Full text online

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED