摘要
本文基于InVEST模型对黑河流域2011年产水量、土壤保持、水质净化、生物多样性维持、碳储存、食物供给6项服务进行估算,并利用空间统计方法计算各项生态系统服务的冷热点分布格局、空间分异特征、服务综合热点区域。结果表明:各服务类型在空间分布上呈现出差异化规律;上游是该流域主要的产水区域,其他生态系统服务主要集中在中游,下游产水供给、水质净化服务都远低于中游;在主要生态系统类型中,草地是承担生态系统供给服务的主要角色;热点分布大多呈现"南高北低,中上游高、下游低"的空间格局,各类生态系统服务空间分异以低-低类型和低-高类型为主。本文通过分析流域生态系统服务的空间分布格局,为确定流域生态保护与建设目标提供了基础,也为其他流域开展生态系统服务空间评估研究提供了重要参考。
Ecosystem services of Heihe River Basin including water conservation, soil retention, water purification, biodiversity sustaining, carbon storage and food supply in 2011 were estimated based on INVEST. Furthermore, the distribution of cold and hot zones, the spatial differentiation characteristics, and the comprehensive hotspots of these ecosystem services were calculated by the spatial statistical methods. The results showed that these ecosystem services presented spatially differential characteristics. Firstly, the upper reaches were the major water supply area, while the other ecosystem services were mainly concentrated in the middle reaches. In addition, the water supply and water purification services were much lower in the lower reaches than in the middle reaches. Among the main ecosystem types, grassland played the main role in providing ecosystem services. Secondly, the spatial pattern of hotspots presented the characteristic of ＂low-value zone located at the north and the downstream, while high-value zone mostly distributed at the south and the upstream, midstream of the basin＂. The spatial differentiation of various types of ecosystem services mainly exhibited as low-low and low-high types. This study provided a basis for determining the goal of watershed ecological protection and construction, and also supplied a significant reference for other river basins to carry out spatial evaluation of ecosystem services.
作者
王蓓
赵军
胡秀芳
WANG Bei ZHAO Jun HU Xiu-fang(College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, China College of Geography Science, Nantong University, Nantong 226007, Jiangsu, China）.)
出处
《生态学杂志》
CAS
CSCD
北大核心
2016年第10期2783-2792,共10页
Chinese Journal of Ecology
基金
国家自然科学基金重点项目(91025001)资助
作者简介
王蓓，女，1992年生，硕士研究生，研究方向为空间分析与应用生态学。E-mail：925665026@qq．com
通讯作者E-mail：zhaojun@nwnu．edu．cn
