陕西秦巴山地生态格局与农业资源持续利用模式研究

A study on agro resources sustainable use based on mountainous eco pattern

山地是具有一定高度和坡度的特殊生态环境综合体。受自然分异规律与人类经济活动的双重干预和影响 ,产生了生态环境类型的垂直分异及其层带组合格局。通过土地生态类型格局分析 ,可以揭示土地生态环境类型结构与功能的异质性和有序性 ,从而为全面认识土地类型群体的生态属性及其演替规律提供理论依据 ,为农业资源利用模式的设计与优化决策提供科学指导。本文以陕西秦巴山地为例 ,利用遥感与GIS方法进行农业生态环境类型时空分异规律及其综合定量评价研究 ,划定了农业生态类型区。据此并以生态学原理和可持续发展准则为指导 ,基于不同的角度提出了山地农业资源持续利用的生态模式。

Mountainous eco environment is an important basis of generating natural agro resource,some environmental factors such as soil,vegetation,hydrology and climate are the composing part of agricultural resources.Their match and constitution can reflect the different patterns and spatial heterogeneity of eco environment. In this paper taking Qin Ba mountain of Shanxi Province as an example,the authors point out that has reliability to reveal the environmental structure,function and distribution laws of agricultural resources by using RS and GIS to evaluate qualitatively land ecotype and divide different ecotype zone. The agricultural resources involve agricultural environmental resources,economical product and social labor resources.The environmental resources ,which can be regarded as basis of generating the economical resources,are related compactly with regional eco environment and abided by the zonal principle of mountain land.The economical resources,which are the physical form of the environmental resources,are related directly with appointed agricultural action and abided by eco economy theory .The social labor resources,whose effect shows dualism,are regarded as the main body and ligament that integrate above two kinds of resources. The essence of agro resources sustainable use is to combine the sustainability of environmental resources system with sustainable increase of agro products to meet the demand of getting rid of poverty and realizing sustainable development of society and economy by giving play to the positive actions of labors in mountainous area.