基于GIS和RS的石羊河流域景观功能分区

景观功能分区是生态系统和自然资源科学管理及可持续利用的基础。干旱区内陆河流域生态系统组成要素和影响因素的区域差异性决定了不同区域具有不同的景观功能。对其进行科学划分,可为生态恢复与重建提供科学依据。针对目前生态功能区划仅从区域地貌单元、生态要素等方面考虑,而很少涉及景观能量循环运行与景观优化关注单元等景观生态学的内容。...

The landscape function regionalization for the Shiyang River Basin based on GIS and RS

Ecological function regionalization is the foundation of the rational management and sustainable utilization of ecosystems and nature resources.The regional difference of a basin ecosystem's components and its influence factors decide the different landscape function,which have different eco-functions in a system in dryland area.Regionalize scientifically to the landscape function can provide the scientific basis for regenerating and conserving ecological environment.A new theory of ecological function regionalization is proposed based on landscape ecology,which makes up the shortages of ecological countermeasures that just consider geomorphic unit and ecological elements,but ignore the ecological energy cycle and optimize landscape units range from angle of landscape ecology.Based on analyzing the basic features of the ecological environment and landscape functional costs as well as optimized units in the Shiyang River Basin,we discussed the principles,bases,methodology and nomenclature of landscape function regionalization as well as the application of GIS and RS in landscape function regionalization.Based on the ecosystem assessment,three landscape functional regions,and 9 eco-funct ional zones were subdivided by the method of cost resistance.Besides,the basic futures of landscape function regions and optimized measures were also analyzed.