基于

doi:10.13249/j.cnki.sgs.2005.05.579

地理科学 ›› 2005, Vol. 25 ›› Issue (5): 579-583.doi: 10.13249/j.cnki.sgs.2005.05.579

基于"压力-状态-响应"框架的县级土地质量评价指标研究

郭旭东¹, 邱扬², 连纲^1,3, 王静¹

1. 中国土地勘测规划院、国土资源部土地利用重点实验室, 北京 100035;
2. 北京师范大学资源与环境科学系, 北京 100875;
3. 中国科学院生态环境研究中心系统生态重点实验室, 北京 100085

收稿日期:2004-08-06 修回日期:2004-12-11 出版日期:2005-09-20 发布日期:2005-09-20
基金资助:
国家自然科学基金项目(40201004)、"国土资源部百名优秀青年科技人才计划"项目资助。

Land Quality Evaluation Indicators at County Scale Based on "Press-State-Response" Framework

GUO Xu-Dong¹, QIU Yang², LIAN Gang^1,3, WANG Jing¹

1. Key Laboratory of Land Use, Ministry of National Land and Resources, Beijing 100035;
2. Department of System Resources and Environment Science, Beijing Normal University, Beijing 100875;
3. Key Laboratory of Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085

Received:2004-08-06 Revised:2004-12-11 Online:2005-09-20 Published:2005-09-20

摘要/Abstract

摘要： 以陕西省安塞县为例,针对其水土流失问题,建立了基于PSR框架的土地质量指标体系。压力指标包括地形、农用地、人口、收入及格局指标,状态指标包括土壤侵蚀、土壤肥力和粮食作物产量指标,响应指标包括土地利用和政策指标。运用GIS、模型模拟和统计分析的方法计算土地质量指标的数值,采用分级赋值、综合打分的方法评价土地质量。结果表明,安塞县土地的压力较大,整体状态偏低,响应措施也不积极。探讨了指标在土地质量管理中的应用性并提出今后土地质量可能的研究方向。

Abstract: Huge press to land resources with economic development and land quality degradation and ecological environment deterioration urge to build up the land quality indicators based on"press-state-response" framework, which can reflect distinctly the reasons and results of land quality changes and correspondingly adoptable strategies. By taking Ansai County, Shaanxi Province, in the northern China as an example, land quality indicators based on "press-state-response" framework for soil degradation by water erosion were built up. Press indicators include topography, farmland, population, income and spatial pattern indicators. State indicators include soil erosion, soil fertility and crop yield. Response indicators include land use and policy. The values of land quality indicators were got by the application of GIS, model simulating and statistical analysis. Based on land use map of Ansai County in 1998, the values of press, state and response were got respectively by giving values to different grades of indicators and computing the average. The results showed the press to land in Ansai County came mainly from topography and disturbance of human activities. The land whose slope is more than 25皁ccupied about 47.11% of total land area, while the land of slope less than 5癷s only 4.59%. The proportion of farmland and crop seeding area to whole area is respectively 52.48% and 47.96%,the proportion of cultivation income is also higher, which indicated higher dependence of farmers on land. The average soil erosion is estimated about 6268t/km² by using USLE model. The soil fertility and crop yield is low, so the state of land quality is also low. Response of Land quality is not active, the evaluation value is only 1.75. This paper also discussed the applicability of indicators in land quality management practice and proposed it is probably one of the most important trend for land quality research to build up the land quality indicators and methods system based on PSR framework, which is supported by "3S"technology combined with field investigation and relative basic geographical information.

中图分类号:

S157.1

郭旭东, 邱扬, 连纲, 王静. 基于"压力-状态-响应"框架的县级土地质量评价指标研究[J]. 地理科学, 2005, 25(5): 579-583.

GUO Xu-Dong, QIU Yang, LIAN Gang, WANG Jing. Land Quality Evaluation Indicators at County Scale Based on "Press-State-Response" Framework[J]. SCIENTIA GEOGRAPHICA SINICA, 2005, 25(5): 579-583.

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基于"压力-状态-响应"框架的县级土地质量评价指标研究

Land Quality Evaluation Indicators at County Scale Based on "Press-State-Response" Framework

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