地理研究 ›› 2002, Vol. 21 ›› Issue (5): 647-655.doi: 10.11821/yj2002050014

• 论文 • 上一篇    下一篇

黄土丘陵区生态重建“赈济退耕”及地域分异特征

徐勇1, 韩国义2, 甘国辉1   

  1. 1. 中国科学院地理科学与资源研究所,北京100101;
    2. 瑞典国际环境研究院,斯德哥尔摩SE103
  • 收稿日期:2002-03-22 修回日期:2002-07-21 出版日期:2002-10-15 发布日期:2002-10-15
  • 作者简介:徐勇(1964-),男,陕西榆林人,副研究员。主要从事农业与乡村发展、区域持续发展模拟等领域的 科研工作。E-mail:yongxu@sina.com
  • 基金资助:

    中国科学院知识创新项目(KZCX1100704);中国科学院地理科学与自然资源研究所创新工程主干项目(CXIOGE010503)

Spatial different characteristics on relieving and de-farming for eco-environmental rehabilitation in the loess hilly-gully region

XU Yong1, HAN Guo-yi2, GAN Guo-hui1   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Stockholm Environment Institute, Stockholm SE-103, Sweden
  • Received:2002-03-22 Revised:2002-07-21 Online:2002-10-15 Published:2002-10-15

摘要:

“赈济退耕”是目前国家关于黄土丘陵区生态重建的主体措施。本文在总结“赈济退耕”措施及其基本特点的基础上 ,根据土地利用、耕地坡度分级数据和“赈济退耕”现行标准分别计算了黄土丘陵区各县退耕 2 5°和 15°以上坡耕地的面积和政策性补贴资金需求额度。在构建并采用退耕指数和政策性补贴资金密度指数等指标对 5 5个县 (市、区 )进行类型划分的基础上 ,分析了黄土丘陵区生态重建“赈济退耕”规模及政策性补贴地域分异特征

关键词: 生态重建, 赈济退耕, 地域分异, 黄土丘陵区

Abstract:

Relieving and de-farming" is identified presently as an important strategic measure for national eco-environmental rehabilitation in the loess hilly-gully region. Based on the issue, the characteristics of relieving and de-farming measure are discussed. The sizes of de-farming slope farmland over 25° and 15° and the quantum of policy allowance of each county are calculated. With the aid of constructed de-farming exponential and policy allowance fund density exponential, 55 counties of the loess hilly-gully region are classified into groups of different levels, and the spatial differentiation characteristics of de-farming sizes and policy allowance are respectively analyzed. It is found out: (1) The area of de-farming slope farmland over 25° is 41.91×10 4hm 2,and the policy allowance is 44.01×10 8yuan(RMB). The area of de-farming slope farmland over 15° is 125.53×10 4hm 2,and the policy allowance is 131.82×10 8yuan. (2) There are two main relieving and de-farming districts in the loess hilly-gully region. The larger district is located in the contiguous areas between Yan, an and Yulin city of northern Shaanxi province, and the smaller one is situated at some counties neighboring on the Liupanshan Mountains in eastern Gansu province and southern Ningxia Hui Autonomous Region. (3) The process of relieving and de-farming project should be divided into two phases. De-farming slope farmland over 25° should be regarded as the main task of the first phase, and that between 25° and 15° as second phase task. (4) To formulate regional policies on relieving and de-farming as soon as possible and put the limited fund to the two main relieving and de-farming districts

Key words: eco-environment rehabilitation, relieving and de-farming, spatial differentiation, loess hilly-gully region