Estimates of shifts in ecosystem service values due to changes in key factors in the Manas River basin, northwest China
Estimates of shifts in ecosystem service values due to changes in key factors in the Manas River basin, northwest China
复制标题
玛纳斯河流域关键因素变化导致的生态系统服务价值变化估算
DOI：
10.1016/j.scitotenv.2018.12.309
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发表时间：
2019-04-01
影响因子：
9.8
通讯作者：
Zhang, Qingqing
中科院分区：
文献类型：
--
作者：
Ling, Hongbo;Yan, Junjie;Zhang, Qingqing
生态系统服务价值(ESV)可以根据生态系统服务的变化进行定量评估。然而，很少有研究考虑两个科学问题：(1)如何量化驱动生态系统服务的因素的贡献；(2)如何改善ESV分布的空间变异性。利用地理信息系统研究了玛纳斯河流域植被覆盖(VC)、人类干扰指数(HDI)和温度植被干旱指数(TVDI)3个因子的时空变化及其对ESV的影响。我们发现，高VC区正在扩大，HDI显著增强。Vc、HDI和TVDI对总ESV的贡献率分别为38.0%、31.6%和30.4%，总ESV增加3.7%。冷点主要分布在荒漠区、山区和绿洲南部，热点主要分布在绿洲北部和沙漠西南部。Vc、HDI和TVDI反映了在这个流域生态系统中确定的ESV的时空差异。此外，有可能通过分析ESV冷/热点的变化来制定适当的生态补偿措施。这项研究的结果为选择驱动干旱土地地区ESV变化的关键因素以及在世界各地类似地区实现可持续的流域管理提供了科学依据。(C)2018爱思唯尔B.V.保留所有权利。
The ecosystem service value (ESV) can be quantitatively assessed based on changes in ecosystem services. However, few studies have considered two scientific problems: (1) how to quantify the contributions of factors that drive ecosystem services, and (2) how to improve the spatial variability of ESV distributions. In this study, a geographic information system was used to investigate spatial and temporal changes in three factors, i.e., vegetation cover (VC), human disturbance index (HDI), and temperature vegetation drought index (TVDI), and their effects on the ESV in the Manas River basin. We found that high VC areas were expanding and the HDI was significantly enhanced. The contributions of VC, HDI, and TVDI to the total ESV were 38.0%, 31.6%, and 30.4%, respectively, and the total ESV increased by 3.7%. The cold spots were mainly distributed in the desert area, mountains, and the southern parts of the oasis area, whereas the hot spots occurred mainly to the north of the oasis area and southwest of the desert. VC, HDI, and TVDI reflected the spatial and temporal differences in the ESV determined in this river basin ecosystem. Furtherly, it may be possible to formulate appropriate ecological compensations by analyzing the changes in ESV cold/hot spots. The results of this study provide a scientific basis to facilitate the selection of the key factors that drive changes in the ESV in arid land areas, as well as for achieving a sustainable basin management in similar regions around the world. (c) 2018 Elsevier B.V. All rights reserved.