汾河源区生态系统服务价值的时空变化

高婧; 李晋昌; 杨永刚

doi:10.7522/j.issn.1000-694X.2015.00094

中国沙漠 >

2015 , Vol. 35 >Issue 3: 814 - 820

DOI: https://doi.org/10.7522/j.issn.1000-694X.2015.00094

生态与经济

汾河源区生态系统服务价值的时空变化

高婧 ,
李晋昌 ,
杨永刚

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山西大学黄土高原研究所, 山西太原 030006

高婧(1988-),女,山西代县人,硕士研究生,从事区域生态学研究。Email:gaojing@sxu.edu.cn

收稿日期: 2015-02-20

修回日期: 2015-03-27

网络出版日期: 2015-05-20

基金资助

山西省科技重大专项(20121101011);国家自然科学基金项目(41101013;41271513)

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Temporal and Spatial Variation in Ecosystem Service Value in the Source Region of Fenhe River of China

Gao Jing ,
Li Jinchang ,
Yang Yonggang

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Institute of Loess Plateau, Shanxi University, Taiyuan 030006, China

Received date: 2015-02-20

Revised date: 2015-03-27

Online published: 2015-05-20

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摘要

运用GIS和遥感技术分析了汾河源区宁武县1990、2000、2010年的土地利用/覆被时空变化特征,并参照中国不同陆地生态系统单位面积服务价值,分析了该区域生态系统服务价值的时空变化。结果表明:1990-2010年,研究区生态系统服务价值共损失0.34×10⁸元,且损失量和损失幅度呈增加趋势;研究区东北到西南方向上的大片低海拔区域生态系统服务价值减幅较大,主要与该区域频繁的人类活动有关,而高海拔山区减幅较小或略有增加。气候暖干化、过度放牧和建设用地增加引起的草地和水域减少是导致研究区生态系统服务价值减少的主要原因。

关键词： 土地利用/覆被变化; 生态系统服务价值; 人类活动; 宁武县

本文引用格式

高婧 , 李晋昌 , 杨永刚 . 汾河源区生态系统服务价值的时空变化[J]. 中国沙漠, 2015 , 35(3) : 814 -820 . DOI: 10.7522/j.issn.1000-694X.2015.00094

Abstract

We used remote sensing data to evaluate land use/cover change of Ningwu County in the Source Region of Fenhe River, then applied a fast method to evaluate ESV (Ecosystem Service Value) in 1990, 2000, and 2010. Our results showed that construction land and unused land both increased obviously, and woodland increased slightly during 1990-2010, grassland, farmland and water body all decreased, especially water body. The ESV dropped from 21.79×10⁸RMB in 1990 to 21.45×10⁸RMB in 2010, showing an accelerating rate of decrease. During 1990-2010, the ESV of the low altitude regions in the northeast to southwest direction of the studied area decreased largely due to the frequent human activities in this region. The decrease or increase of ESV in other regions was slightly. In the studied area, soil formation and protection was the largest service function, followed by biodiversity conservation, and food production was the smallest. The area decrease in grassland and water body was the main reason for the decrease in ESV in the studied area.

Key words： land use/cover change; ecosystem service value; human activity; Ningwu County

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