东北样带土地利用变化对生态服务价值的影响

doi:10.11821/xb200708010

摘要/Abstract

摘要：

根据中国东北样带上不同的土地利用组合类型, 分别选取抚松县、磐石市、公主岭市、通辽市及林西县作为典型区, 运用GIS 和遥感技术分析近30 年来不同类型区土地利用变化对生态系统服务价值的影响。本文选取基于货币量的价值量评价法, 参考Costanza 等人的研究成果, 结合研究区的实际情况, 运用中国陆地生态系统服务单位面积价值的平均值来分析研究区的生态系统服务价值变化情况。研究结果表明, 1976-2000 年间东北样带土地利用类型变化很大, 土地利用程度均呈加大趋势, 耕地、林地和草地的ESV 均有较大变动, 不同类型区单位面积的ESV 差别也很大, 其基本分布规律为林区> 农林交错区> 牧区> 农牧交错区> 农区。敏感性分析结果表明, 研究区内ESV 对生态服务功能价值指数是缺乏弹性的, 研究结果是可信的。

关键词: LUCC 变化, 生态系统服务价值, 敏感性指数, 东北样带, 中国

Abstract:

Ecosystem services are basis of human living and development. Land use and its changes have deep effect on the ecosystem structure and functions, even its services. According to the different land use patterns in the Northeast China Transect (NECT), this paper selects Fusong county, Panshi city, Gongzhuling city, Tongliao city and Linxi county as typical regions and analyzes the effects of land use change on ecosystem services during the past 30 years by using the GIS and RS. This paper selects the evaluation method based on money. According to partial global ecosystem services value evaluation results obtained by Costanza et al. and the state of the study area, this paper uses per unit area ecosystem services value of Chinese terrestrial ecosystems to analyze the change of ecosystem services value in the study area. The result shows that the land use pattern has changed greatly in NECT from 1976 to 2000. The area of cultivated land and the town and construction land increased rapidly in Fusong county and Panshi city, while the woodland and grassland decreased greatly. The woodland and grassland tend to change into the cultivated land in Gongzhuling city. The area of woodland in Tongliao city increased and the grassland decreased, while it is on the contrary in Linxi county. This change is related to the policy implementation of converting slope farmland into forestland and grassland. Viewed from the land use degree, we can see that all typical counties have increased from 1976 to 2000, especially in Panshi city and Tongliao city. The analysis on ecosystem services indicates that per unit area ESV in different types of regions differs greatly. The fundamental distribution rule is, from big to small, the forest region, the farming-forest region, the pastoral region, the farming-pastoral region and the farming region respectively. This has close relationship with the ecological value coefficient of different land use types and the land use degrees. From the dynamic change, the ESV of the cultivated land, the woodland and the grassland all change greatly in all kinds of typical regions in NECT. The total value has tended to decrease in all regions except Tongliao city. The analysis on the sensitive coefficient shows that the ESV is short of flexibility in the study area and the result is credible.

Key words: LUCC change, ecosystem services, sensitive coefficient, the Northeast China Transect (NECT)

岳书平, 张树文, 闫业超. 东北样带土地利用变化对生态服务价值的影响[J]. 地理学报, 2007, 62(8): 879-886.

YUE Shuping, ZHANG Shuwen, YAN Yechao. Impacts of Land Use Change on Ecosystem Services Value in the Nor theast China Tr ansect (NECT)[J]. Acta Geographica Sinica, 2007, 62(8): 879-886.

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