LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 1161

Search options

  1. Article: [Relationship Between Precipitation, River Water, and Groundwater Conversion in the Upper Reaches of Xilin River During the Rainy Season].

    Sun, Jin / Wang, Yi-Xuan / Yang, Lu / Duan, Li-Min / Chu, Shao-Jie / Zhang, Gui-Xin / Zhang, Bo / Liu, Ting-Xi

    Huan jing ke xue= Huanjing kexue

    2023  Volume 44, Issue 12, Page(s) 6754–6766

    Abstract: ... in the Xilin River Basin were taken as the research objects, the hydrogen and oxygen stable isotopes were ... transformation relationship between different water bodies in the basin. The results showed that:① the Xilin ...

    Abstract To deeply understand the hydrological cycle process and the transformation mechanism of different water bodies in the grassland inland river basin, the atmospheric precipitation, river water, and groundwater in the Xilin River Basin were taken as the research objects, the hydrogen and oxygen stable isotopes were analyzed, and the multi-scale spatio-temporal characteristics were analyzed to explore the quantitative transformation relationship between different water bodies in the basin. The results showed that:① the Xilin River Basin had an obvious inland semi-arid climate, the atmospheric precipitation was the main source of recharge for the river water and groundwater, and the groundwater and river water experienced different degrees of non-equilibrium evaporation at the same time. ② The isotopic composition of the river water showed the characteristics of depletion in spring and autumn and enrichment in summer and showed a trend of increasing from upstream to downstream in space. The variation in
    Language Chinese
    Publishing date 2023-12-14
    Publishing country China
    Document type English Abstract ; Journal Article
    ISSN 0250-3301
    ISSN 0250-3301
    DOI 10.13227/j.hjkx.202211172
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: Construction of an evapotranspiration model and analysis of spatiotemporal variation in Xilin River Basin, China.

    Yu, Hongbo / Cao, Congming / Zhang, Qiaofeng / Bao, Yuhai

    PloS one

    2021  Volume 16, Issue 9, Page(s) e0256981

    Abstract: ... of water consumption in the arid and semi-arid regions of the Xilin River Basin based on comprehensive parameters ... for applicability to the Xilin River Basin based on Geographic Information System technology and spatial ... with negligible spatial variations throughout the Xilin River Basin. During May-July, the evapotranspiration was ...

    Abstract Surface evapotranspiration is a water exchange process between the atmosphere, biosphere, and hydrosphere. Accurate evapotranspiration estimations in arid and semi-arid regions are important for monitoring droughts and protecting the ecological environment. The main objective of this study is to build an evapotranspiration estimation model suitable for an effective scientific and objective evaluation of water consumption in the arid and semi-arid regions of the Xilin River Basin based on comprehensive parameters, including meteorological parameters, vegetation coverage, and soil water content. In this study, the community evapotranspiration model was initially constructed using field data, which was then expanded for applicability to the Xilin River Basin based on Geographic Information System technology and spatial heterogeneity characteristics of remote sensing data; both models were significant at the 0.05 level. The monthly evapotranspiration values in July during 2000-2017 and those from April to September (growing season) during the dry, normal, and wet years were calculated using the model at the basin scale. The evapotranspiration showed a generally increasing trend, which was consistent with the fluctuation trend in precipitation in July during 2000-2017. The trend curve for evapotranspiration was gentle during the growing season in dry years, but steep during wet years. The evapotranspiration was the lowest in April, with negligible spatial variations throughout the Xilin River Basin. During May-July, the evapotranspiration was higher than that in other months, in the following order: upper reaches > middle reaches > lower reaches; this was consistent with the vegetation coverage. The evapotranspiration declined and spatial variations were not evident during August-September. The results of this study provide a reference for evapotranspiration model construction and a scientific basis for evaluating regional water resources and protecting the ecological environment.
    MeSH term(s) China ; Conservation of Natural Resources/methods ; Desert Climate ; Droughts ; Water/chemistry ; Water Resources
    Chemical Substances Water (059QF0KO0R)
    Language English
    Publishing date 2021-09-10
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0256981
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Greenhouse gas emissions from the water-air interface of a grassland river: a case study of the Xilin River.

    Hao, Xue / Ruihong, Yu / Zhuangzhuang, Zhang / Zhen, Qi / Xixi, Lu / Tingxi, Liu / Ruizhong, Gao

    Scientific reports

    2021  Volume 11, Issue 1, Page(s) 2659

    Abstract: Greenhouse gas (GHG) emissions from rivers and lakes have been shown to significantly contribute to global carbon and nitrogen cycling. In spatiotemporal-variable and human-impacted rivers in the grassland region, simultaneous carbon dioxide, methane and ...

    Abstract Greenhouse gas (GHG) emissions from rivers and lakes have been shown to significantly contribute to global carbon and nitrogen cycling. In spatiotemporal-variable and human-impacted rivers in the grassland region, simultaneous carbon dioxide, methane and nitrous oxide emissions and their relationships under the different land use types are poorly documented. This research estimated greenhouse gas (CO
    Language English
    Publishing date 2021-01-29
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-021-81658-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Characterization of Aroma Volatiles in Xilin Fire Ginger Oils by HS-SPME-GC-MS

    Zhang, Lulu / Wang, Houzheng / Tang, Xingyue / Lu, Shunzhong / Tan, Yuying / Li, Qiuting / Wu, Jianwen

    International Journal of Food Properties. 2022 Dec. 31, v. 25, no. 1 p.53-64

    2022  

    Abstract: ... oil in Xilin fire ginger, which included ginger essential oil (GEO), ginger oleoresin extracted ...

    Abstract Ginger is widely used as either a food product or a herbal medicine around the globe. In the current study, we used headspace solid-phase microextraction and gas chromatography-mass spectrometry technology (HS-SPME-GC-MS) with n-butyl acetate as an internal standard to characterize three kinds of ginger oil in Xilin fire ginger, which included ginger essential oil (GEO), ginger oleoresin extracted with petroleum ether (PEGO) and ginger oleoresin extracted with absolute ethanol (AEGO). Cluster analysis of heatmap was used to reveal the differences in concentration in these oils. Odor activity value, in combination with principal component analysis, was further used to analyze the contribution to the aroma. This study demonstrated that despite the similarities in the aroma compounds and content of three kinds of ginger oil, GEO exhibited a better aroma quality, followed by AEGO and PEGO.
    Keywords acetates ; aromatic compounds ; cluster analysis ; essential oils ; ethanol ; foods ; gas chromatography-mass spectrometry ; ginger ; headspace analysis ; herbal medicines ; odors ; oils ; oleoresins ; petroleum ; principal component analysis ; solid phase microextraction ; Xilin fire ginger oils ; Aroma compounds ; HS-SPME-GC-MS ; Principal component analysis (PCA) ; Heatmap cluster analysis
    Language English
    Dates of publication 2022-1231
    Size p. 53-64.
    Publishing place Taylor & Francis
    Document type Article ; Online
    ZDB-ID 1402715-x
    ISSN 1532-2386 ; 1094-2912
    ISSN (online) 1532-2386
    ISSN 1094-2912
    DOI 10.1080/10942912.2021.2019267
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article: Attribution analysis and multi-scenario prediction of NDVI drivers in the Xilin Gol grassland, China

    Xu, Mengran / Zhang, Jing / Li, Zhenghai / Mo, Yu

    Journal of Arid Land. 2022 Sept., v. 14, no. 9

    2022  

    Abstract: ... to investigate the spatiotemporal changes of NDVI in the Xilin Gol grassland, Inner Mongolia Autonomous Region ... The results showed that: (1) in the past 21 a, vegetation cover in the Xilin Gol grassland exhibited ...

    Abstract Grassland degradation is influenced by climate change and human activities, and has become a major obstacle for the development of arid and semi-arid areas, posing a series of environmental and socio-economic problems. An in-depth understanding of the inner relations among grassland vegetation dynamics, climate change, and human activities is therefore greatly significant for understanding the variation in regional environmental conditions and predicting future developmental trends. Based on MODIS (moderate resolution imaging spectroradiometer) NDVI (normalized difference vegetation index) data from 2000 to 2020, our objective is to investigate the spatiotemporal changes of NDVI in the Xilin Gol grassland, Inner Mongolia Autonomous Region, China. Combined with 12 natural factors and human activity factors in the same period, the dominant driving factors and their interactions were identified by using the geographic detector model, and multiple scenarios were also simulated to forecast the possible paths of future NDVI changes in this area. The results showed that: (1) in the past 21 a, vegetation cover in the Xilin Gol grassland exhibited an overall increasing trend, and the vegetation restoration (84.53%) area surpassed vegetation degradation area (7.43%); (2) precipitation, wind velocity, and livestock number were the dominant factors affecting NDVI (the explanatory power of these factors exceeded 0.4). The interaction between average annual wind velocity and average annual precipitation, and between average annual precipitation and livestock number greatly affected NDVI changes (the explanatory power of these factors exceeded 0.7). Moreover, the impact of climate change on NDVI was more significant than human activities; and (3) scenario analysis indicated that NDVI in the Xinlin Gol grassland increased under the scenarios of reduced wind velocity, increased precipitation, and ecological protection. In contrast, vegetation coverage restoration in this area was significantly reduced under the scenarios of unfavorable climate conditions and excessive human activities. This study provides a scientific basis for future vegetation restoration and management, ecological environmental construction, and sustainable natural resource utilization in this area.
    Keywords arid lands ; atmospheric precipitation ; climate ; climate change ; ecological restoration ; grasslands ; herd size ; humans ; models ; normalized difference vegetation index ; prediction ; socioeconomics ; spectroradiometers ; vegetation cover ; wind speed ; China
    Language English
    Dates of publication 2022-09
    Size p. 941-961.
    Publishing place Science Press
    Document type Article
    ZDB-ID 2730950-2
    ISSN 1674-6767
    ISSN 1674-6767
    DOI 10.1007/s40333-022-0032-x
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  6. Article ; Online: Construction of an evapotranspiration model and analysis of spatiotemporal variation in Xilin River Basin, China.

    Hongbo Yu / Congming Cao / Qiaofeng Zhang / Yuhai Bao

    PLoS ONE, Vol 16, Iss 9, p e

    2021  Volume 0256981

    Abstract: ... of water consumption in the arid and semi-arid regions of the Xilin River Basin based on comprehensive parameters ... for applicability to the Xilin River Basin based on Geographic Information System technology and spatial ... with negligible spatial variations throughout the Xilin River Basin. During May-July, the evapotranspiration was ...

    Abstract Surface evapotranspiration is a water exchange process between the atmosphere, biosphere, and hydrosphere. Accurate evapotranspiration estimations in arid and semi-arid regions are important for monitoring droughts and protecting the ecological environment. The main objective of this study is to build an evapotranspiration estimation model suitable for an effective scientific and objective evaluation of water consumption in the arid and semi-arid regions of the Xilin River Basin based on comprehensive parameters, including meteorological parameters, vegetation coverage, and soil water content. In this study, the community evapotranspiration model was initially constructed using field data, which was then expanded for applicability to the Xilin River Basin based on Geographic Information System technology and spatial heterogeneity characteristics of remote sensing data; both models were significant at the 0.05 level. The monthly evapotranspiration values in July during 2000-2017 and those from April to September (growing season) during the dry, normal, and wet years were calculated using the model at the basin scale. The evapotranspiration showed a generally increasing trend, which was consistent with the fluctuation trend in precipitation in July during 2000-2017. The trend curve for evapotranspiration was gentle during the growing season in dry years, but steep during wet years. The evapotranspiration was the lowest in April, with negligible spatial variations throughout the Xilin River Basin. During May-July, the evapotranspiration was higher than that in other months, in the following order: upper reaches > middle reaches > lower reaches; this was consistent with the vegetation coverage. The evapotranspiration declined and spatial variations were not evident during August-September. The results of this study provide a reference for evapotranspiration model construction and a scientific basis for evaluating regional water resources and protecting the ecological environment.
    Keywords Medicine ; R ; Science ; Q
    Subject code 550
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  7. Article ; Online: Sequence and gene organization of the Xilin small partridge duck (Anseriformes, Anatidae, Anas) mitochondrial DNA.

    Xie, Zhixun / Zhang, Yanfang / Xie, Liji / Deng, Xianwen / Xie, Zhiqin / Huang, Li / Huang, Jiaoling / Zeng, Tingting

    Mitochondrial DNA. Part A, DNA mapping, sequencing, and analysis

    2016  Volume 27, Issue 3, Page(s) 1579–1580

    Abstract: The complete mitochondrial genome sequence of the Xilin small partridge duck was measured by PCR ... based methods. Our research findings revealed that the entire mitochondrial genome of the Xilin small ... avian species. The complete mitochondrial genome of the Xilin small partridge duck contains 13 protein ...

    Abstract The complete mitochondrial genome sequence of the Xilin small partridge duck was measured by PCR-based methods. Our research findings revealed that the entire mitochondrial genome of the Xilin small partridge duck was 16,604 bp (GenBank accession number: KJ833586). The contents of A, T, C, and G in the mitochondrial genome were 29.20%, 22.19%, 32.82% and 15.79%, respectively, which were similar to the majority of most avian species. The complete mitochondrial genome of the Xilin small partridge duck contains 13 protein-coding genes, 2 rRNA genes, 22 tRNA genes, and 1 control region. Components of the Xilin small partridge duck's mitochondrial genome were similar to those of other Anatidae in gene arrangement and composition. The complete mitochondrial genome of the Xilin small partridge duck should provide essential information for understanding phylogenetic relationships of duck mitochondrial genome.
    Language English
    Publishing date 2016-05
    Publishing country England
    Document type Journal Article
    ISSN 2470-1408
    ISSN (online) 2470-1408
    DOI 10.3109/19401736.2014.958677
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Changes in soil microbial community response to precipitation events in a semi-arid steppe of the Xilin River Basin, China

    Zhang, Hui / Liu, Wenjun / Kang, Xiaoming / Cui, Xiaoyong / Wang, Yanfen / Zhao, Haitao / Qian, Xiaoqing / Hao, Yanbin

    Journal of Arid Land. 2019 Feb., v. 11, no. 1

    2019  

    Abstract: ... from June to September) of 2012 in a semi-arid temperate steppe of the Xilin River Basin in Inner Mongolia ...

    Abstract In the context of climate change, precipitation is predicted to become more intense at the global scale. Such change may alter soil microbial communities and the microbially mediated carbon and nitrogen dynamics. In this study, we experimentally repackaged precipitation patterns during the growing season (from June to September) of 2012 in a semi-arid temperate steppe of the Xilin River Basin in Inner Mongolia of China, based on the 60-year growing season precipitation data. Specifically, a total amount of 240 mm simulated precipitation was assigned to experimental plots by taking the following treatments: (1) P6 (6 extreme precipitation events, near the 1st percentile); (2) P10 (10 extreme precipitation events, near the 5th percentile); (3) P16 (16 moderate precipitation events, near the 50th percentile); and (4) P24 (24 events, 60-year average precipitation, near the 50th percentile). At the end of the growing season, we analyzed soil microbial community structure and biomass, bacterial abundance, fungal abundance and bacterial composition, by using phospholipid fatty acid (PLFA), real-time quantitative polymerase chain reaction (RT-qPCR) and 16S rRNA gene clone library methods. The extreme precipitation events did not change soil microbial community structure (represented by the ratio of PLFA concentration in fungi to PLFA concentration in bacteria, and the ratio of PLFA concentration in gram-positive bacterial biomass to PLFA concentration in gram-negative bacterial biomass). However, the extreme precipitation events significantly increased soil microbial activity (represented by soil microbial biomass nitrogen and soil bacterial 16S rRNA gene copy numbers). Soil fungal community showed no significant response to precipitation events. According to the redundancy analysis, both soil microbial biomass nitrogen and soil ammonium nitrogen (NH4-N) were found to be significant in shaping soil microbial community. Acidobacteria, Actinobacteria and Proteobacteria were the dominant phyla in soil bacterial composition, and responded differently to the extreme precipitation events. Based on the results, we concluded that the extreme precipitation events altered the overall soil microbial activity, but did not impact how the processes would occur, since soil microbial community structure remained unchanged.
    Keywords Acidobacteria ; Actinobacteria ; Gram-negative bacteria ; Gram-positive bacteria ; Proteobacteria ; ammonium nitrogen ; arid lands ; bacterial biomass ; carbon ; climate change ; community structure ; gene dosage ; growing season ; microbial activity ; microbial nitrogen ; phospholipid fatty acids ; quantitative polymerase chain reaction ; reverse transcriptase polymerase chain reaction ; ribosomal RNA ; soil ; soil bacteria ; soil fungi ; steppes ; watersheds ; China
    Language English
    Dates of publication 2019-02
    Size p. 97-110.
    Publishing place Science Press
    Document type Article
    ZDB-ID 2730950-2
    ISSN 1674-6767
    ISSN 1674-6767
    DOI 10.1007/s40333-018-0071-5
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article: Understanding Grassland Degradation and Restoration from the Perspective of Ecosystem Services: A Case Study of the Xilin River Basin in Inner Mongolia, China

    Zhang, Xuefeng / Niu, Jianming / Buyantuev, Alexander / Zhang, Qing / Dong, Jianjun / Kang, Sarula / Zhang, Jing

    Sustainability. 2016 June 24, v. 8, no. 7

    2016  

    Abstract: ... by vegetation succession in the Xilin River Basin, Inner Mongolia, China. Using vegetation maps derived ... in grassland ecosystems in the Xilin River Basin over the past three decades affected the dynamics of ESs among which SC ...

    Abstract Ecosystem services (ESs) and their transformations in northern China play a crucial role in regional sustainability. During the past several decades, grassland degradation has become one of the most important ecological and economic issues in this region. Therefore, understanding the impacts of grassland degradation and restoration on ESs is essential for maintaining ecological resilience and social security of Northern China. Our objective was to explore the relationship between ESs and grassland changes induced by vegetation succession in the Xilin River Basin, Inner Mongolia, China. Using vegetation maps derived from remotely sensed imagery collected in 1983, 1989, 2000, and 2011, we calculated the degree of grassland degradation using the Grassland Degradation Index (GDI). Aboveground biomass (AGB), soil conservation (SC), and water retention (WR) were also estimated to assess ESs for each year. Our results show that: (1) GDI increased during 1983–2000 and decreased during 2000–2011 indicating that after experiencing two decades of severe degradation the grassland has been restored since 2000. (2) AGB and SC were significantly negatively correlated with GDI. Changes in grassland conditions significantly affected WR and SC with both declining during 1983–2000 and increasing afterwards. The increase of SC, however, was slow compared to AGB and WR, which is an indication of time lag in soil restoration. (3) Grasslands in the middle and lower reaches experienced worse degradation than in the upper reaches. (4) AGB and SC exhibited a synergy, while trade-offs existed between AGB and WR and SC and WR. In summary, significant changes in grassland ecosystems in the Xilin River Basin over the past three decades affected the dynamics of ESs among which SC and WR require special attention in the future.
    Keywords aboveground biomass ; case studies ; ecological resilience ; ecological succession ; ecosystem services ; ecosystems ; grasslands ; remote sensing ; soil conservation ; soil restoration ; vegetation maps ; watersheds ; China
    Language English
    Dates of publication 2016-0624
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2518383-7
    ISSN 2071-1050
    ISSN 2071-1050
    DOI 10.3390/su8070594
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  10. Article: [Spatial and temporal distribution of trace elements in surface water in the Xilin River Basin].

    Xue, Li-Yang / Wu, Jin-Kui / Zhang, Ming-Quan / Ding, Yong-Jian / Ye, Bai-Sheng

    Huan jing ke xue= Huanjing kexue

    2012  Volume 33, Issue 10, Page(s) 3417–3425

    Abstract: In order to better understand the hydrological process in Xilin River Basin, 248 water samples were ... collected in 13 sections (10 were at the mainstream and 3 were at the three tributaries) over the Xilin ...

    Abstract In order to better understand the hydrological process in Xilin River Basin, 248 water samples were collected in 13 sections (10 were at the mainstream and 3 were at the three tributaries) over the Xilin River during 2006-2008 and thereafter analyzed by high resolution inductively coupled plasma mass spectrometry (ICP-MS) for 20 trace elements. The temporal and spatial distribution characteristics of trace elements were obtained. The results showed that the average concentration values of trace elements were 0. 1-10 microg x L(-1). Most of those values were at the concentration ranges of precipitation and groundwater and very close to the values of groundwater, indicating that the surface water was recharged by precipitation and groundwater especially by groundwater. The variation of concentration of trace elements in surface water was not strong at the temporal scale. Usually, the concentration values of trace elements were higher in April and May than those in July and August while those values were a bit lower in 2007 than in 2006 and 2008. Most of the trace element concentrations showed a upward trend from upstream to downstream. The enrichment of trace elements was contributed to the recharge of tributaries and groundwater, the evaporation of the stream water.
    MeSH term(s) China ; Environmental Monitoring ; Fresh Water/chemistry ; Groundwater/chemistry ; Rivers/chemistry ; Trace Elements/analysis
    Chemical Substances Trace Elements
    Language Chinese
    Publishing date 2012-10
    Publishing country China
    Document type English Abstract ; Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 0250-3301
    ISSN 0250-3301
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top