自然资源学报

自然资源学报 ›› 2010, Vol. 25 ›› Issue (10): 1689-1697.doi: 10.11849/zrzyxb.2010.10.007

• 资源安全 • 上一篇    下一篇

黄土丘陵区退耕还林工程对县域粮食安全的影响——以陕西省清涧、米脂、子洲、吴堡县为例

成六三1,2, 吴普特1,2,3, 赵西宁1,2   

  1. 1. 中科院水利部 水土保持研究所, 陕西 杨凌 712100;
    2. 国家节水灌溉杨凌工程技术研究中心, 陕西 杨凌 712100;
    3. 西北农林科技大学 资源与环境工程学院, 陕西 杨凌 712100
  • 收稿日期:2010-01-21 修回日期:2010-06-03 出版日期:2010-10-20 发布日期:2010-10-20
  • 通讯作者: 吴普特(1963- ),男,研究员,博士生导师,主要从事节水农业与水土资源高效利用等方面研究。E-mail:gjzwpt@vip.sina.com E-mail:ssllcc2002@163.com;gjzwpt@vip.sina.com
  • 作者简介:成六三(1979- ),男,博士生,主要研究退耕还林工程效益评价。E-mail:ssllcc2002@163.com;
    吴普特(1963- ),男,研究员,博士生导师,主要从事节水农业与水土资源高效利用等方面研究。E-mail:gjzwpt@vip.sina.com
  • 基金资助:

    国家自然科学基金项目(40701092);国家863计划项目(2006AA100217);国家科技支撑计划(2007BAD88B10;2007BAD88B05)

The Effects of Grain for Green Project on the County-level Food Security in the Loess Plateau Hilly Region —A Case Study in Mizhi, Qingjian, Zizhou and Wupu Counties of Shaanxi Province

CHENG Liu-san1,2, WU Pu-te1,2,3, ZHAO Xi-ning1,2   

  1. 1. Institute of Soil and Water Conservation, CAS & Ministry of Water Resources, Yangling 712100, China;
    2. National Engineering Research Center for Water Saving Irrigation at Yangling, Yangling 712100, China;
    3. College of Resources and Environment Sciences, Northwest Sci-Tech University of Agriculture and Forestry, Yangling 712100, China
  • Received:2010-01-21 Revised:2010-06-03 Online:2010-10-20 Published:2010-10-20

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摘要： 为了评估黄土丘陵区实施退耕还林工程对县域粮食安全的影响,选取研究区典型四县——米脂、清涧、子洲和吴堡,假设实施退耕还林工程粮食补贴全部以粮食实物兑现和不实施退耕还林工程退耕的坡耕地提供粮食生产为前提,运用修订的耕地压力指数模型来对比评估退耕还林工程对县域粮食安全的影响。研究结果表明:退耕还林工程对米脂县和子洲县粮食安全影响较明显,对清涧县和吴堡县影响甚微。不同退耕规模对不同人口密度县域粮食安全的影响程度不同。研究结果对国家建立长期、稳定、有效的粮食补偿机制有一定参考意义。

关键词: 退耕还林工程, 耕地压力指数, 粮食安全

Abstract: Since 1999, the government of China has carried out an awfully ambitious conservation program for "win-win" objective of environment refinement and poverty reduction becoming self-sustainable. The program was famous Grain for Green Project, for which the government of China spent more than 4300 billion yuan and 27 million hm2 of slope cultivated land was converted to forest and more than 100 million farmers took part in the program from 1999 to 2008. So we adopted the revised model of land use pressure index to the assessment of Grain for Green Project on the county-level food security from 1999 to 2008 based on case study in Mizhi, Qingjian, Zizhou and Wupu counties. Supposed food subsidies to compensation loss of farmers conversed of cropland to forest land in the form of grain for framers conversed of forest land to cropland, the results indicates that the effects of Grain for Green Project on Mizhi and Zizhou counties, which have a population density of 150-180 people per km2 and implementation conversion of 1.44-1.58 ten thousand hm2 of cropland to forest land,are obvious; but that of Qingjian County with a population density of 110-120 people per km2 and implementation conversion of 0.4 ten thousand hm2 of cropland to forest land and Wupu County with a population density of 170-190 people per km2 and implementation conversion of 0.4 ten thousand hm2 of cropland to forest land, are little influenced. In a word, the effects on food safety for counties with different population density and different conversion scale are different in the Loess Plateau hilly region. The government will choose the results to establish long-term, stable and effective food compensation mechanism, in order to consolidate gains of Grain for Green Project in the future.

Key words: Grain for Green Project, land use pressure index, food security

中图分类号: 

  • S774