摘要
选取了坡度、土地利用类型、土壤类型、海拔高度、坡向等5个主导评价因子,采用等差指数多因子综合分析与最低限制性因子分析相结合的方法,利用ARCGIS 9.0软件提取相关信息,对南水北调中线工程水源区农耕地进行了分等定级。结果表明,最适宜和中度适宜的土地面积分别占3.4%和36.5%,以中低产田为主;临界适宜和不适宜的土地面积占16.8%和43.4%,具有潜在的宜林宜牧利用价值。研究结果对于水源区制定农业发展政策,科学合理、高效利用土地尤其是耕地资源,实现生态环境保护与经济的协调发展具有重要意义。
The paper adopts the following five factors： slopes, the types of land use, the tudes and slope directions and makes a combination of analyzing many integrated factors and the types of soil, altilowest limited factors using ARCGIS soft wares to get the related information. Based on the analysis, the article divides the arable lands of South-to-North Water Diversion Project into four grade. The result shows that the most and the more suitable account for 3.4% and 36.5% respectively, which are dominated by the lands of middle and low outputs; the suitable and the less suitable account for 16.8% and 43.4% respectively, which latently suit for forest plantation and animal husbandry. The result of the study has a significant meaning in making policy of the development of agriculture, scientifically and high-efficiently using of land especially cultivated land resources so as to realize the coordinated development of ecological environment protection and economy. The research also provides scientific basis for sustainable utilization of land resources in the water source region of south-to-north water diversion of middle line.
出处
《地域研究与开发》
CSSCI
北大核心
2009年第2期95-98,共4页
Areal Research and Development
基金
河南省林业厅低山丘陵生态修复重点实验室和平顶山学院重点学科生态地理学重点资助项目
关键词
分等定级
GIS
耕地
水源区
南水北调
中线工程
grade classification
GIS
arable land
water source region
south-to-north water diversion
middleline project
