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Article: Evaluating the effect of ecological policies from the pattern change of persistent green patches–A case study of Yan'an in China's Loess Plateau

Xu, Xin / Zhang, Daojun

Ecological informatics. 2021 July, v. 63

2021

Abstract: Evaluation from landscape pattern change can comprehensively reflect the impact of ecological policies on the ecosystem service function. However, previous assessments based on landscape patterns only considered land cover type and ignored the quality of ...

Abstract	Evaluation from landscape pattern change can comprehensively reflect the impact of ecological policies on the ecosystem service function. However, previous assessments based on landscape patterns only considered land cover type and ignored the quality of vegetation cover, which could hardly reflect regional differences in restoration durability and sustainability. Based on the temporal phase characteristics of the vegetation index, this study proposes the concept of Persistent Green Patches (PGPs). Taking Yan'an, a key area for the implementation of ecological projects in the Loess Plateau, as a study area, the effect of ecological policies was evaluated from the pattern change of PGPs from 2000 to 2017 through Morphological Spatial Pattern Analysis (MSPA). It is found that (1) the area of PGPs was increased from 14.45% to 44.26% in Yan'an since the implementation of the ecological projects; (2) the Grain for Green projects can hardly form a short-term increase of PGPs; while the Natural Forest Protection projects can quickly increase the PGPs area, its effect would tend to be saturated or even decrease in the long term; (3) the fragmentation and connectivity of the landscape show that the ecological projects promote the connection between different green patches, and improves the overall connectivity of the PGPs. This study provides a new perspective on evaluating the effect of ecological projects, which is expected to provide a reference for the future optimization of relevant ecological policies and regional sustainable development.
Keywords	case studies ; durability ; ecosystem services ; forests ; land cover ; landscapes ; sustainable development ; vegetation cover ; vegetation index ; China
Language	English
Dates of publication	2021-07
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	2212016-6
ISSN	1878-0512 ; 1574-9541
ISSN (online)	1878-0512
ISSN	1574-9541
DOI	10.1016/j.ecoinf.2021.101305
Database	NAL-Catalogue (AGRICOLA)

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Article: Comparing the long‐term effects of artificial and natural vegetation restoration strategies: A case‐study of Wuqi and its adjacent counties in northern China

Xu, Xin / Zhang, Daojun

Land degradation & development. 2021 Aug. 30, v. 32, no. 14

2021

Abstract: The significant increase in vegetation coverage in northern China over the past two decades has attracted worldwide attention. Revegetation has been completed via artificial and natural restoration techniques, and the relative performance of each needs ... ...

Abstract	The significant increase in vegetation coverage in northern China over the past two decades has attracted worldwide attention. Revegetation has been completed via artificial and natural restoration techniques, and the relative performance of each needs to be further explored. Although some studies have focused on the comparison between artificial and natural methods in vegetation restoration from a micro‐perspective, there is a lack of evidence at the regional scale. This study considers Wuqi County and its adjacent areas of the Loess Plateau in northern China as our study area. First, natural and artificial restoration areas were identified. Then, the restoration sustainability of different restoration strategies and the adjustment effect of climate factors in the relationship between vegetation restoration strategy choice and vegetation restoration sustainability were analyzed. We found that the vegetation restoration strategies employed varied between local jurisdictions. In areas dominated by artificial restoration, vegetation coverage increased over a short period, but the growth rate diminished in the long term. In comparison, in areas mainly dominated by natural restoration, although the growth rate of revegetation was not very high in the short term, it was stable in the long term. In addition, the impact of vegetation restoration strategies on vegetation restoration sustainability exhibited spatial heterogeneity, and the temperature, humidity, and wind speed further affected strategy outcomes. This study provides a new perspective for vegetation restoration strategy evaluation and is expected to serve as a reference for the optimization of relevant ecological policies in the future.
Keywords	humidity ; land degradation ; land restoration ; spatial variation ; temperature ; vegetation ; wind speed ; China
Language	English
Dates of publication	2021-0830
Size	p. 3930-3945.
Publishing place	John Wiley & Sons, Ltd.
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	1319202-4
ISSN	1085-3278
ISSN	1085-3278
DOI	10.1002/ldr.4018
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Article: A novel framework for evaluating the effect of vegetation restoration via grazing exclusion by fencing: A case‐study from the Qinghai–Tibet Plateau

Yang, Wanjing / Zhang, Daojun / Luo, Gang

Land degradation & development. 2022 Aug. 30, v. 33, no. 14

2022

Abstract: Grazing exclusion by fencing (GEF) has been implemented to prevent the deterioration of grassland ecosystems in China since the beginning of this century; meanwhile, the effects have attracted widespread attention from the academic community. However, ... ...

Abstract	Grazing exclusion by fencing (GEF) has been implemented to prevent the deterioration of grassland ecosystems in China since the beginning of this century; meanwhile, the effects have attracted widespread attention from the academic community. However, due to the simultaneity of different factors, it is difficult to separate the effect of different policies from natural resource endowments and identify the independent role of each policy. In this study, a novel framework was established based on spatiotemporal statistics. First, an indicator‐denoted vegetation restoration potential achievement degree (VRPAD) was introduced to lessen the impact of resource endowment conditions. Second, a double‐difference model of both space and time was developed to reflect the net improvement of VRPAD brought by GEF. The case study showed that 15 out of the 17 fenced‐off enclosures achieved positive VRPAD growth since the GEF implementation, while only 58.8% showed a much faster improvement or a slower degeneration than their adjacent areas. It was also found GEF effect presented apparent administrative differences in terms of spatial distribution. The number of effective fences accounted for 75% in Mami Town, but it was 0 in Chabu Town. It is concluded that the role of GEF may be overestimated, multi‐pronged approaches are more conducive to vegetation restoration, and strengthening grassroots management and self‐policing of fences is important to improve GEF efficiency. This research provides a novel framework for distinguishing policy effect and is expected to inspire new ideas and methodological support for policy formulation and evaluation.
Keywords	case studies ; ecological restoration ; grasslands ; issues and policy ; land degradation ; models ; space and time ; statistics ; China
Language	English
Dates of publication	2022-0830
Size	p. 2619-2634.
Publishing place	John Wiley & Sons, Ltd.
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	1319202-4
ISSN	1085-3278
ISSN	1085-3278
DOI	10.1002/ldr.4338
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Article: Analysis on the spatio-temporal evolution and influencing factors of China’s grain production

Li, Shaoting / Zhang, Daojun / Xie, Yuan / Yang, Chao

Environmental science and pollution research. 2022 Apr., v. 29, no. 16

2022

Abstract: The rapid economic development and climate change have accelerated the changes in China’s food production and have a potential impact on food security. In this paper, the grain sown area from 2001 to 2019 was selected to analyze the spatio-temporal ... ...

Abstract	The rapid economic development and climate change have accelerated the changes in China’s food production and have a potential impact on food security. In this paper, the grain sown area from 2001 to 2019 was selected to analyze the spatio-temporal evolution and driving factors of China’s grain production through spatial autocorrelation analysis and geographically weighted regression. Our findings were as follows: (1) From the perspective of time characteristics, China’s grain production from 2001 to 2019 experienced four stages, rapid decline, rapid growth, steady growth, and slow decline, although with an overall upward trend. (2) From the perspective of spatial characteristics, the overall spatial pattern had a significant positive correlation. The high values were mainly concentrated in Shandong, Anhui, and Jilin and moved to the northeast China as time went on. (3) In terms of influencing factors, the positive impact of agricultural labor force on the grain production gradually decreased, showing a decreasing trend from southwest to northeast. The promotion of agricultural mechanization on the grain production increased year by year, with the spatial distribution characteristics of high in the northeast and low in the southwest. Besides, the coefficient of water resources endowment was negative, showing a spatial distribution pattern of high north and low south.
Keywords	agricultural mechanization ; autocorrelation ; climate change ; economic development ; farm labor ; food production ; food security ; labor force ; pollution ; research ; China
Language	English
Dates of publication	2022-04
Size	p. 23834-23846.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-021-17657-2
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Article ; Online: Comparative effectiveness and safety of drug therapy for chronic urticaria: a network meta-analysis and risk-benefit assessment.

Qian, Tian / Jiang, Xia / Zhang, Daojun / Song, Yao / Hao, Fei

Expert opinion on drug safety

2023 , Page(s) 1–15

Abstract: Background: Chronic urticaria (CU) is a prevalent chronic skin condition characterized by recurrent wheals. Clinical guidelines recommend multiple drugs for CU treatment. Our study aims to compare the effectiveness and safety of drug therapy for CU.: ... ...

Abstract	Background: Chronic urticaria (CU) is a prevalent chronic skin condition characterized by recurrent wheals. Clinical guidelines recommend multiple drugs for CU treatment. Our study aims to compare the effectiveness and safety of drug therapy for CU. Methods: We conducted a comprehensive search of randomized controlled trials (RCTs) and real-world studies (RWSs) in PubMed, EMBASE, and Cochrane. A network meta-analysis (NMA) was conducted to assess the response rate, decline in Urticaria Activity Score over 7 Days (UAS7), Dermatology Life Quality Index (DLQI), and adverse event rates of standard-dose and high-dose H1 antihistamine (H1AH), omalizumab (OMA) 75, 150, and 300 mg, cyclosporine and placebo. The risk-benefit assessment was conducted by probabilistic simulation and stochastic multicriteria acceptability analysis (SMAA). Results: A total of 39 studies were identified, including 37 RCTs and 2 RWSs. OMA 300 mg and 150 mg both had significantly higher response rate than standard-dose H1AH ( Conclusion: Regarding risk-benefit assessment, OMA 300 mg emerges as the optimal pharmacological intervention for CU, while OMA 150 mg stands as a secondary alternative compared to H1 antihistamines and cyclosporine.
Language	English
Publishing date	2023-09-25
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	2088728-0
ISSN	1744-764X ; 1474-0338
ISSN (online)	1744-764X
ISSN	1474-0338
DOI	10.1080/14740338.2023.2262377
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Article: Explore Associations between Subjective Well-Being and Eco-Logical Footprints with Fixed Effects Panel Regressions

Wu, Xiu / Zhang, Jinting / Zhang, Daojun

Land. 2021 Sept. 03, v. 10, no. 9

2021

Abstract: As environmental degradations constantly and directly threaten human well-being, it is imperative to explore the environmental impacts on people’s happy life. This research investigates the association between subjective well-being (SWB) and ecological ... ...

Abstract	As environmental degradations constantly and directly threaten human well-being, it is imperative to explore the environmental impacts on people’s happy life. This research investigates the association between subjective well-being (SWB) and ecological footprints (EF) through space-time fixed effects panel regressions. EF, as a vital indicator of environmentally sustainable development, plays a vital role in ecological balance. SWB determines the subjective quality of life for humanity. EF-related factors and socio-economic indexes referring to GDP, urbanization rate, income, education, health, political stability, and political voice accountability in 101 countries were captured. Compared with ordinary least square (OLS), stepwise regression (SR) and fixed effects panel regression models (FEPR) exhibited good fitness regardless of the cross-section or longitudinal models due to R2 beyond 0.9. The finding also discloses that EF and health were positively significant to SWB, while income was negatively significant to SWB. EF was an invert u-shaped link to SWB, which met the assumption of EKC. This research provided a model-driven quantitative method to address environmental impacts on people’s quality life of happiness, and opened shared doors for further research of carbon balance and circular economy.
Keywords	accountability ; carbon ; circular economy ; ecological balance ; education ; income ; land ; politics ; quality of life ; quantitative analysis ; social welfare ; socioeconomics ; space and time ; sustainable development ; urbanization
Language	English
Dates of publication	2021-0903
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2682955-1
ISSN	2073-445X
ISSN	2073-445X
DOI	10.3390/land10090931
Database	NAL-Catalogue (AGRICOLA)

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Article: Divergent impacts of droughts on vegetation phenology and productivity in the Yungui Plateau, southwest China

Ge, Wenyan / Han, Jianqiao / Zhang, Daojun / Wang, Fei

Ecological indicators. 2021 Aug., v. 127

2021

Abstract: Climate change has led to an increase in the severity and frequency of extreme weather events, especially droughts. Quantifying the impacts of droughts on vegetation activities is essential to study the effects of climate change on the ecosystem. Using ... ...

Abstract	Climate change has led to an increase in the severity and frequency of extreme weather events, especially droughts. Quantifying the impacts of droughts on vegetation activities is essential to study the effects of climate change on the ecosystem. Using Gross Primary Productivity (GPP), phenological metrics, and Standardized precipitation evaporation index (SPEI) with multi-timescales, we evaluated the divergent responses of vegetation activities to droughts in the Yungui Plateau from 2001 to 2017. Besides, the sensitivity of vegetation to drought was analyzed by the maximum correlation coefficients between vegetation activities and SPEI over the plateau. Results revealed that the overall changes of the start (SOS) and end (EOS) of growing season in the plateau exhibited nonsignificant changes during the study period. Meanwhile, two extreme droughts of the study period caused a tremendous decrease in GPP and severe delays in SOS and EOS. Vegetation activities increased significantly in the eastern plateau because of the strong drought resistance of vegetation. Conversely, the dynamics of vegetation activities, especially phenological metrics, were nonsignificant in the west due to the weak drought resistance of vegetation. Preseason droughts of spring phenology played a key role in determining SOS dynamics. Besides, drought before summer contributed to the delay of EOS, while summer drought leads to early EOS. Hence, preseason droughts of autumn phenology nonlinearly impacted EOS due to strong interaction between SOS and EOS. More importantly, the stronger influences of SOS on annual GPP compared to EOS suggest that preseason droughts of SOS are essential to the vegetation productivity in the plateau. Given that the continuous warming of the climate will lead to more frequent droughts, it is essential to investigate the resilience of vegetation growth to drought in future work.
Keywords	autumn ; climate ; climate change ; drought ; drought tolerance ; ecosystems ; evaporation ; gross primary productivity ; phenology ; spring ; summer ; vegetation ; China
Language	English
Dates of publication	2021-08
Publishing place	Elsevier Ltd
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	2036774-0
ISSN	1872-7034 ; 1470-160X
ISSN (online)	1872-7034
ISSN	1470-160X
DOI	10.1016/j.ecolind.2021.107743
Database	NAL-Catalogue (AGRICOLA)

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Article: Quantifying the efficiency of soil conservation and optimized strategies: A case‐study in a hotspot of afforestation in the Loess Plateau

Ning, Jiachen / Zhang, Daojun / Yu, Qiang

Land degradation & development. 2021 Feb. 15, v. 32, no. 3

2021

Abstract: Although it is generally believed the Grain for Green programme (GFG) implemented in China has attenuated soil erosion, the extent to which it is effective still needs verification. Taking Yan'an in the Loess Plateau as the study area, we analysed both ... ...

Abstract	Although it is generally believed the Grain for Green programme (GFG) implemented in China has attenuated soil erosion, the extent to which it is effective still needs verification. Taking Yan'an in the Loess Plateau as the study area, we analysed both total effect and efficiency differences during GFG implementation. Results showed that, while soil erosion on average decreased from 4,884.49 to 4,087.57 t km⁻² yr⁻¹, counties with higher GFG implementation intensity achieved a lower soil conservation effect. For example, Wuqi ranks third in the GFG implementation intensity among all counties in Yan'an, but its actual soil erosion reduction is the lowest, only 54.1% of Yan'an's average level. To analyse the reason for the efficiency difference, the concept of soil conservation potential was proposed. It is concluded that the soil conservation effect is controlled by the soil conservation potential. Ideally, regions with high soil conservation potential should get priority in the GFG application, yet there is a significant spatial mismatch between the GFG implementation intensity and the soil conservation potential because the correlation coefficient is only −0.05, which weakened the soil control effect. A dynamic implementation mechanism was put forward for the formulation and optimization of ecological programmes and projects in future: first, using the soil conservation potential to determine the implementation intensity in each region; second, adjusting the intensity to the changes of the soil conservation potential in the following implementation; third, repeating above steps to ensure high efficiency of soil erosion control, and achieving the sustainability and effectiveness of the ecological projects.
Keywords	afforestation ; erosion control ; land degradation ; soil ; soil erosion ; China
Language	English
Dates of publication	2021-0215
Size	p. 1114-1126.
Publishing place	John Wiley & Sons, Ltd.
Document type	Article
Note	NAL-AP-2-clean ; JOURNAL ARTICLE
ZDB-ID	1319202-4
ISSN	1085-3278
ISSN	1085-3278
DOI	10.1002/ldr.3730
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Article: Editorial: Materials for Electroanalysis Based on Advanced Frameworks.

Yuan, Baiqing / Liu, Dong / Yin, Huajie / Zhang, Daojun

Frontiers in chemistry

2021 Volume 9, Page(s) 638338

Language	English
Publishing date	2021-02-15
Publishing country	Switzerland
Document type	Editorial
ZDB-ID	2711776-5
ISSN	2296-2646
ISSN	2296-2646
DOI	10.3389/fchem.2021.638338
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Article: Copper Cobalt Sulfide Structures Derived from MOF Precursors with Enhanced Electrochemical Glucose Sensing Properties.

Zhang, Daojun / Zhang, Xiaobei / Bu, Yingping / Zhang, Jingchao / Zhang, Renchun

Nanomaterials (Basel, Switzerland)

2022 Volume 12, Issue 9

Abstract: Nonenzymatic electrochemical detection of glucose is popular because of its low price, simple operation, high sensitivity, and good reproducibility. Co-Cu MOFs precursors were synthesized via the solvothermal way at first, and a series of porous spindle- ... ...

Abstract	Nonenzymatic electrochemical detection of glucose is popular because of its low price, simple operation, high sensitivity, and good reproducibility. Co-Cu MOFs precursors were synthesized via the solvothermal way at first, and a series of porous spindle-like Cu-Co sulfide microparticles were obtained by secondary solvothermal sulfurization, which maintained the morphology of the MOFs precursors. Electrochemical studies exhibit that the as-synthesized Cu-Co sulfides own excellent nonenzymatic glucose detection performances. Compared with CuS, Co (II) ion-doped CuS can improve the conductivity and electrocatalytic activity of the materials. At a potential of 0.55 V, the as-prepared Co-CuS-2 modified electrode exhibits distinguished performance for glucose detection with wide linear ranges of 0.001-3.66 mM and high sensitivity of 1475.97 µA·mM
Language	English
Publishing date	2022-04-19
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2662255-5
ISSN	2079-4991
ISSN	2079-4991
DOI	10.3390/nano12091394
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