[1]刘迪,陈海,张行,等.黄土侵蚀沟谷土地生态系统健康评价——以杜家石沟为例[J].水土保持研究,2019,26(02):100-106.
　LIU Di,CHEN Hai,ZHANG Hang,et al.Assessment of Land Ecosystem Health of Loess Erosion Valley—A Case Study of Dujiashi Valley[J].Research of Soil and Water Conservation,2019,26(02):100-106.
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黄土侵蚀沟谷土地生态系统健康评价——以杜家石沟为例

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年02期 页码: 100-106 栏目: 出版日期: 2019-04-28
Title:
Assessment of Land Ecosystem Health of Loess Erosion Valley—A Case Study of Dujiashi Valley
作者:
刘迪1,2, 陈海1,2, 张行1,2, 毛南赵1,2, 梁小英1,2
1. 西北大学 城市与环境学院, 西安 710127;
2. 陕西省地表系统与环境承载力重点实验室, 西安 710127
Author(s):
LIU Di1,2, CHEN Hai1,2, ZHANG Hang1,2, MAO Nanzhao1,2, LIANG Xiaoying1,2
1. College of Urban and Environmental Sciences, Northwest University, Xi’an 710127, China;
2. Shaanxi Key Laboratory of Earth Surface System and Environmental Carrying Capacity, Xi’an 710127, China
关键词:
土地生态系统健康; PSR模型; 空间分异; 地形起伏度; 杜家石沟
Keywords:
land ecosystem health; PSR model; spatial differentiation; terrain relief; Dujiashi Valley
分类号:
X171.4
摘要:
健康的生态系统被认为是环境管理的终极目标，进行生态系统健康研究对探索区域生态系统可持续发展具有重要意义。以黄土侵蚀沟谷杜家石沟为例，基于“压力—状态—响应”模型（PSR），利用格网分析法进行数据提取与成图，分析了杜家石沟土地生态系统健康的空间分异，利用地形起伏度及其分布指数探究了生态系统健康与地形之间的空间关系。结果表明：（1）杜家石沟土地生态系统健康空间差异十分显著。健康高值区（27.02%）分布于山地丘陵及其边缘深切沟谷，健康低值区（33.37%）分布于中东部沟谷及其二级侵蚀沟，该类区域应作为格局调控与生态恢复的重点关注区域；（2）生态系统健康与地形起伏度关系密切。人类活动压力随地形起伏度的升高而降低，这一过渡伴随着健康状态值以及响应的差异变化，并最终影响土地生态系统健康的空间分异。
Abstract:
The ecosystem health is considered to be the ultimate goal of environmental management, and it is of great significance to explore the sustainable development of regional ecological system. Taking Dujiashi Valley of Mizhi County, Shaanxi Province in the loess hilly-gully region as research area, we constructed a multi-indices evaluation system to investigate ecosystem health based on the Pressure-State-Response (PSR) model. The spatial differentiation of the ecosystem health of Dujiashi Gully was analyzed, and the relationship between ecosystem health and geographical environment was explored by the terrain relief and its distribution index. The conclusions were drawn as the followings. (1) Spatial differentiation of the comprehensive ecosystem health of Dujiashi Valley was significant. The region with high value of ecosystem health distributed in the hills and the marginal gully area, which accounted for 27.02% of the study area; meanwhile, the region with low value of ecosystem health distributed in the central gully and its secondary erosion gully of middle and eastern gully and its extend area, which made up 33.37% of the study area and should be the focus of landscape pattern regulation and ecological restoration. (2) Ecosystem health was closely related to terrain relief. With the rising of relief, the pressure of human activities decreased. At the same time, this process had an impact on the change of regional productivity, landscape structure and habitat quality, finally affected the spatial differentiation of land ecosystem health degree.

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备注/Memo

收稿日期:2018-07-02;改回日期:2018-07-28。
基金项目:国家自然科学基金（41671086，41271103）
作者简介:刘迪(1993-),男,河南郑州人,硕士研究生,研究方向为综合自然地理与景观生态。E-mail:lcx@stumail.nwu.edu.cn
通讯作者:陈海(1971-),男,山西侯马人,博士,教授,主要从事土地利用与农户行为研究。E-mail:chw@nwu.edu.cn

更新日期/Last Update: 1900-01-01