自然资源学报 ›› 2004, Vol. 19 ›› Issue (5): 637-645.doi: 10.11849/zrzyxb.2004.05.014

• 资源生态 • 上一篇    下一篇

黄土丘陵区“梯田退耕”生态重建规划方法——以燕沟流域为例

徐勇1, 田均良2, 刘普灵2   

  1. 1. 中国科学院地理科学与资源研究所,北京100101;
    2. 中国科学院水土保持研究所,陕西杨凌712100
  • 收稿日期:2004-03-30 修回日期:2004-05-12 出版日期:2004-10-25 发布日期:2004-10-25
  • 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、土地利用变化与可持续发展等领域的科研工作.E-mail:yongxu@sina.com
  • 基金资助:

    国家自然科学基金项目(40371051);中国科学院知识创新工程项目(KZCX1-6-2-6)。

Planning method of ecological restoration based on enlarging terrace and de-farming in the loess hilly-gully region: A case study of Yangou Catchment

XU Yong1, TIAN Jun-liang2, LIU Pu-ling2   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Institute of Soil and Water Conservation Research, CAS, Yangling 712100, China
  • Received:2004-03-30 Revised:2004-05-12 Online:2004-10-25 Published:2004-10-25

摘要: 论文在阐述“梯田退耕”生态重建规划指导思想、内容、标准及宜遵循的基本原则的基础上,借助GIS空间分析技术,提出并探讨了针对黄土丘陵区中小尺度流域或行政村合理布建梯田和经济林果园地等的规划方法及技术流程,进而将其应用于燕沟流域,研究结果表明业已探讨的规划方法是可行的和实用的。按规划结果,燕沟流域至少需新修梯田295.06hm2、果园4.61hm2,使其基本农田达到359.23hm2、果园面积达到622.69hm2;森林覆盖率48.87%,林灌草植被覆盖率可达75%,坡地减沙效益在80%以上。农业发展预计每年可实现粮食总产1645.13t、苹果总产9340t以上,载畜量可达7500只羊单位。

关键词: 梯田退耕, 生态重建规划方法, 燕沟流域, 黄土丘陵区

Abstract: A core idea of enlarging terrace and de-farming (RTD) is "to carry out development itself by a definite external support",and its key contents are to rebuild terrace,to enlarge garden plots and to restore vegetation in the loess hilly-gully region.Based on the previous research results of the successful cases of small catchments,this paper discussed the planning principles of RTD ecological restoration,and put forward the planning method and its techno-flow by means of GIS spatial analysis.And then,the planning method was applied to Yangou catchment, and the result showed that it is practicable. The above discussed planning principles of RTD eco-environment restoration should include the actualization of the planning should be in a catchment or a village,the land use structure should be regulated by terrain gradient,the distance of rebuilt terraces and enlarged garden plots from a residential area should be less than 2km.The techno-flow of the planning method includes the following steps:(1)to digitize maps of terrain,land use,village boundary and residential area;(2)to match and attach those maps;(3)to pick up spatial data and confirm planning data;(4)to make sure the planning and distribution schemes;and (5)to analyze the planning results. The study results applied to Yangou catchment showed that the area of enlarged terraces is at least 295.06hm2,with 359.23hm2 of total basic farmland area,the area of enlarged garden plot is at least 4.61hm2,with 622.69hm2 of total area,and de-farmed slope farmland at least 410.35 hm2.After the land use structure being regulated,the forest cover rate is 48.87% and the permanent vegetation cover rate is about 75% in Yangou catchment.And in the agricultural development,the Yangou catchment can yield 1 645 tons of food supplies,9 340 tons of apples,and can feed 7 500 sheep every year.

Key words: enlarged terrace and de-farming, planning method of eco-environment restoration, Yangou catchment, loess hilly-gully region