自然资源学报

自然资源学报 ›› 2003, Vol. 18 ›› Issue (1): 44-49.doi: 10.11849/zrzyxb.2003.01.007

• 论文 • 上一篇    下一篇

黄土丘陵区小流域生态经济系统健康评价

刘国彬, 胡维银, 许明祥   

  1. 中国科学院、水利部、西北农林科技大学水土保持研究所, 陕西杨凌 712100
  • 收稿日期:2002-07-27 修回日期:2002-10-24 出版日期:2003-02-25 发布日期:2003-02-25
  • 作者简介:刘国彬(1958～),男,陕西榆林人,研究员,博士生导师,长期从事林草植被恢复及流域生态与 管理研究工作.
  • 基金资助:

    国家重点基础研究发展规划项目(G2000018606);中国科学院知识创新项目(KZCX1-06);西北农林科技大学科研专项资助.

An analysis on eco-economy system health in Zhifanggou Small Watershed of Ansai on Loess Hilly-Gullied Region

LIU Guo-bin, HU Wei-yin, XU Ming-xiang   

  1. Institute of Soil and Water Conservation, Chinese Academy of Sciences, Ministry of Water Resources and Northwest Science&Technology University of Agriculture&Forestry, Yangling 712100, China
  • Received:2002-07-27 Revised:2002-10-24 Online:2003-02-25 Published:2003-02-25

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被引次数

39

摘要： 建立健康的流域生态系统是恢复退化的生态系统、实现黄土高原山川秀美的目标。论文以安塞纸坊沟小流域为对象,利用层次分析法,选取林草覆盖度、基本农田面积、土壤抗冲性、土壤有机质含量、农业产投比、粮食单产、人均纯收入和综合治理减沙效率等反映流域生态经济系统功能评价指标,定量分析了黄土丘陵区安塞纸坊沟小流域进行水土保持型生态农业的建设中生态系统恢复的过程。研究表明,该小流域经过近20年治理,经历了起始恢复、稳定发展阶段,开始进入良性循环。其健康指数由1985年的0.178增加到1999年的0.707。研究中首次引入土壤抗冲性和有机质指标,并在评价中对生态系统恢复不同阶段给予各指标不同权重值,对方法进行了改进。

关键词: 健康评价, 生态经济系统, 小流域, 黄土丘陵区

Abstract: The aim of establishing a healthy ecosystem is to rehabilitate the degenerated ecosys-tem and turn the landscapes of the Loess Plateau green.The Chinese Government has promoted integrated watershed management measures for years to control soil erosion and improve the eco-environmental conditions in a hilly-gullied region of the Loess Plateau.However,there is still no proper method for assessing the health of the ecosystem.This paper,taking Zhifanggou Water-shed in Ansai County as an example,by using the hierarchical approach and selecting evalua-tion indicators such as forest and grass coverage,area of fundamental cropland,soil anti-scoura-bility,soil organic matter content,output/input ratio,per unit area crop yield,per capita net in-comes and benefit of soil erosion control by comprehensive management,the improvement pro-cess in ecosystem rehabilitation of the watershed was analyzed.The result showed that after about 20years of soil conservation practice,the ecosystem health index of the watershed has im-proved from0.178in1985to0.707in1999after experiencing initial restoration,stable im-provement and benign circulation period.This research introduced for the first time the new in-dicators of soil anti-scourability,soil organic matter content and gave the different weight value of indicators in health index calculation in the rehabilitation process.

Key words: health assessment, eco-economic system, small watershed, loess hilly and gully re-gion

中图分类号: 

  • Q146