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Journal of Geographical Sciences 2022年第6期32卷 1059-1075页

作者：牛丽楠邵全琴宁佳黄海波 Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China

Since the implementation of the Development of Western Regions in 2000,a series of major ecological construction projects have been implemented,leading to a series of changes in the ecological conditions and ecological services of western *** study calculated the amount of ecosystem services in total in the western region from 2000 to 2019,and analyzed ecological changes and the characteristics of spatio-temporal variations in ecological services.A relevant analysis method was applied to explore the tradeoff and synergy of *** was found that the area of settlements and wetland ecosystems in the western region increased significantly from 2000 to 2015,whereas grassland showed a downward trend year by *** vegetation fraction showed a decreasing belt-like distribution from south to *** showed a fluctuating increase during 2000 to 2019,with inter-annual and large spatial *** water conservation service(WCS)had a slight downward trend from 2000 to 2019,and the main decreasing areas were distributed in southeastern Tibet,the western part of the Three Rivers Source region,and the karst rocky desertification *** soil conservation service(SCS)showed an increasing but fluctuating trend,with the greatest increases observed in the Loess Plateau region,western Sichuan and Yunnan,northwest Tibet,and southeast *** windbreak and sand fixation service(SFS)showed a downward trend,and the sharp decline was mainly in the central and western parts of Inner Mongolia,Tibet and parts of northern *** supply and WCS,and SCS were mainly synergistic,which were found in areas north of the Qinling Mountains-Huaihe River(QM-HR)line,especially in Ningxia and Inner *** supply was mainly tradeoffs with SFS,and it was found in the agriculture-pastoral transition *** synergistic degree of ecosystem services in areas subjected to ecological engineering policy was greater than that in non-engineering *** asse

关键词： ecosystem services tradeoff and synergy western region Western Development Strategy

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Effect of the Grain for Green Project on freshwater ecosystem services under drought stress

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Journal of Mountain Science 2022年第4期19卷 974-986页

作者： HAN Hui-qing YANG Jian-qiang LIU Yue ZHANG Ying-jia WANG Jun-wen College of Architecture and Urban Planning Guizhou Institute of TechnologyGuiyang 550003China College of Economics and Management Guizhou Institute of TechnologyGuiyang 550003China

The Grain for Green Project(GGP) is an important measure for the prevention of sloping farmland and the restoration of natural *** project has been critical to the restoration of ecological environments in western China. However,the effect of the GGP on freshwater ecosystem services under extreme climates remains unclear. Thus, taking the middle and upper reaches of the Wujiang River Basin in western China as an example, this study assessed the variation of three freshwater ecosystem services(e.g., water yield, soil retention and nutrient retention) impacted by the GGP under drought stress by employing the Integrated Valuation of Ecosystem Services and tradeoffs(In VEST) model. In addition,the trade-off/synergistic relationship between three freshwater ecosystem services was analyzed based on the Pearson correlation coefficient. As revealed from the results, the effect of the GGP on the water yield and nutrient retention under drought stress was significantly higher than that on the soil *** the increase in the drought degree, the variation rate of the water yield and nutrient retention impacted by the GGP increased, whereas that of the soil retention decreased. The GGP in droughts of different seasons resulted in a significant heterogeneity in the changes of three freshwater ecosystem services. The correlation coefficients between the water yield and soil retention as well as that between the water yield and the nutrient retention increased, and the correlation coefficients declined between soil and nutrient retention under different drought degrees following the GGP. Unlike for the summer drought case, there were no significant changes in the correlation coefficients between three freshwater ecosystem services in spring, autumn and winter droughts. The results suggest that the amount of farmland converted to shrubland should be regulated to reduce the trade-off intensity between freshwater ecosystem services. In addition, food security and e

关键词： Grain for Green Project Freshwater ecosystem services Drought Spatial pattern tradeoff and synergy

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tradeoffs and synergies between ecosystem services : A comparison of the karst and non-karst area

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Journal of Mountain Science 2020年第5期17卷 1221-1234页

作者： HAN Hui-qing LIU Yue GAO Hong-juan ZHANG Ying-jia WANG Zhe CHEN Xiao-qiao College of Architecture and Urban Planning Guizhou Institute of TechnologyGuiyang 550003China School of Geography and Resources Guizhou Education UniversityGuiyang 550018China

Under the influence of various natural and human factors, the relationship between the ecosystem services provided for human beings by a karst ecosystem is becoming increasingly complex, profoundly limiting the effective and sustainable development of the social economy and ecosystem protection in karst areas. Taking Guizhou, China as an example, which includes both karst(including five different landforms) and non-karst area, the study explored and compared the tradeoff and synergy between ecosystem services in both terrain types. The results showed higher change rates of water yield and soil retention in karst areas than those in non-karst areas, with only small differences in the carbon storage and crop production change. The ecosystem service relationships in the karst area from 1995 to 2005 were consistent with the relationships in the non-karst area. However, differences were observed in most of these relationships from 2005 to 2015. The relationships between ecosystem services in different karst landforms from 1995 to 2005 remained the same, but there are differences found in the relationships of ecosystem services from 2005 to 2015. The trade-off and synergistic relationships between ecosystem services in the different landforms were closely related to the changes of climate and land use, particularly related to rainfall, rainfall erosivity, farmland, and forestland.

关键词： Ecosystem service tradeoff and synergy Spatial pattern Karst area Guizhou

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