Monitoring and analysing grassland ecosystem service values in response to grassland area changes - an example from northwest China
文献类型： 外文期刊
作者： Manlike, Asiya 2 ; Sawut, Rukeya 1 ; Zheng, Fengling 2 ; Li, Xuesen 2 ; Abudukelimu, Rena 2 ;
作者机构： 1.Dalian Maritime Univ, Nav Coll, Dalian 116026, Peoples R China
2.Xinjiang Acad Anim Sci, Grassland Res Inst, Urumqi 830011, Peoples R China
3.Dalian Maritime Univ, Environm Informat Inst, Dalian 116026, Peoples R China
关键词： driving factors; ecosystem services; ecosystem service values; ESV; grassland degradation; grid cell analysis; overgrazing; remote sensing; special autocorrelation
期刊名称：RANGELAND JOURNAL （ 影响因子：1.09； 五年影响因子：1.51 ）
ISSN： 1036-9872
年卷期： 2020 年 42 卷 3 期
页码：
收录情况： SCI
摘要： Using remote sensing technology, this study evaluates changes in mountain grassland ecosystem service values (ESVs) and the factors driving them. Degraded grasslands in Urumqi city, northwest China, reached 1.22x10(5) ha in 2000. However, the grassland degradation rate decreased by 387 ha annually from 2000 to 2015. Total grassland ESVs decreased unpredictably with an annual reduction of USD$1.64x10(7). Ecological losses were mainly caused by degradation of mountain desert grassland, mountain desert steppe-type rangeland, and mountain meadow and mountain steppe-type rangeland. Among individual ESVs, grasslands contributed more to regulating and supporting services, while grassland provisioning and cultural services were relatively low, comprising 0. 7 and 0.5% of the total ESV respectively. The mean Moran's I value was 0.869 for grassland ESVs (from 1994 to 2015), and exhibited high spatial autocorrelation. A driving factor analysis indicated that grassland degradation is continuing as a consequence of meteorological factors and overgrazing. Controlling grazing intensity has a positive impact on growth of grassland ESVs.
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