中国生态脆弱带人地关系行为机制模型及应用

doi:10.11821/xb200501019

地理学报 ›› 2005, Vol. 60 ›› Issue (1): 165-174.doi: 10.11821/xb200501019

• 区域环境 • 上一篇

中国生态脆弱带人地关系行为机制模型及应用

石敏俊^1,2, 王涛³

1. 筑波大学生命环境科学研究生院, 日本筑波;
2. 中国科学院研究生院, 北京 100049;
3. 中国科学院寒区旱区环境与工程研究所, 兰州730000

收稿日期:2004-04-11 修回日期:2004-10-08 出版日期:2005-01-25 发布日期:2005-01-25
作者简介:石敏俊 (1964-),男,教授,博士生导师。主要从事区域可持续发展、人地关系调控机理、区域经济协调与城乡协调的经济学研究。 E-mail: mjshi@gscas.ac.cn
基金资助:
国家973计划项目“中国北方沙漠化过程与防治”(GT2000048705); 日本环境省地球环境研究基金重点项目“沙漠化的评价与监测综合研究”

An Application of Bio-economic Household Model to Analysis on Man-Land Relationship Behavior in Ecologically Fragile Land of China

SHI Minjun^1,2, WANG Tao³

1. Graduate School of Life and Environmental Sciences, University of Tsukuba;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China;
3. Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China

Received:2004-04-11 Revised:2004-10-08 Online:2005-01-25 Published:2005-01-25
Supported by:
National Key Basic Research Program, No. GT2000048705; Global Environment Research Fund of Ministry of the Environment, Japan

摘要/Abstract

摘要：

以农牧交错带为研究对象,通过建立人地关系行为机制模型,探讨外部社会经济因素影响土地退化的机制,并重点就当前正在实施的退耕还林还草政策所带来的生态经济效果进行分析。模型拟合结果显示,利用玉米及农作物秸秆作为饲料,扩大舍饲动物饲养,或者扩大种植葵花或油料作物等商品作物以替代自给性作物糜子,将可以在不加剧水土流失的前提下增加农户收入。模型结果还显示,非农就业机会增加时,农户会减少坡地垦殖。这表明推进农村工业化和城镇化发展,增加农民非农就业机会,鼓励农民进城的政策对于黄土高原的水土保持也是有促进作用的。

关键词: 农牧交错带, 人地关系行为机制模型, 退耕还林还草政策, 中国

Abstract:

Land degradation is one of the severe environmental problems in China. In order to combat land degradation, a soil conservation program has been introduced since 2000 to reduce soil erosion by converting slope farmland into forest and pasture. This paper represents the first systematic attempt to investigate the impact of the soil conservation program on land degradation in the Loess Plateau. The results indicate that the soil conservation program to convert slope land into forest or pasture is an effective way to combat soil erosion. However, a subsidy that is higher than profit from slope land use activity before conversion is needed to encourage farmers to join the conservation program. Relevant policies to encourage and assist farmers to raise livestock in folds with crops produced from fields as well as fodder and forage grass from the converted slope land might contribute to combat soil erosion. Increase in off-farm job opportunities may encourage farmers' households to reduce farming practices on slope land. This implies that policies to encourage ruralurbanization might contribute to combat soil erosion.

Key words: land degradation, bioeconomic household model, soil conservation program, land conversion, Loess Plateau, China

石敏俊, 王涛. 中国生态脆弱带人地关系行为机制模型及应用[J]. 地理学报, 2005, 60(1): 165-174.

SHI Minjun, WANG Tao. An Application of Bio-economic Household Model to Analysis on Man-Land Relationship Behavior in Ecologically Fragile Land of China[J]. Acta Geographica Sinica, 2005, 60(1): 165-174.

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中国生态脆弱带人地关系行为机制模型及应用

An Application of Bio-economic Household Model to Analysis on Man-Land Relationship Behavior in Ecologically Fragile Land of China

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