陕北黄土高原景观生态环境遥感评价试验研究

REMOTE SENSING EVALUATION ON THE LANDSCAPE ECOLOGICAL ENVIRONMENT IN THE LOESS PLATEAU OF NORTH SHAANXI

选择陕北黄土高原典型地段中神木、府谷县和韩城市进行景观生态环境遥感评价模型试验研究。利用遥感影像与实地考察资料相结合对生态功能定量综合分析，研究景观内部功能与结构、标志与评价模型，确定了各单元环境质量，为典型地段分区治理和开发利用与环境监测提供依据。

The Loess Plateau of north Shaanxi is a zone characterized by serious soil erosion, frequent natural disasters and fragile ecological environment. Nowadays, it is very important to undertake the divisional harness, dynamical monitoring and macroscopic regulation in the exploitation of resources, environmental protection and integrated realignment according to the comprehensive features and differences of the landscape ecological environment of this special area. Thus, Shenmu County, Fugu County and Hancheng City, the typical regions in the Loess Plateau of north Shaanxi, are selected to carry out the model experiment study of remote sensing evaluation on the landscape ecological environment. A comprehensive evaluation on the ecological environment quality in the typical regions is carried out by using the theory and methods of landscape ecology, taking remote sensing images as the basic information sources and combining the field investigation data. Because landscape itself possesses a high order and includes the surface organic plant communities and inorganic geomorphologic, hydrological, climatic, soil and other factors, it is a natural synthesis with regionalization. Remote sensing images can express the features and regional differences of landscape factors. In the paper, the function, structure and marks of landscape are analyzed, the environment quality of each unit is determinded and the grade series are arrapged. Which can provide a basis for divisional barness expolitation and utilization of resources and environment monitoring in the typical regions and also provide the available methods and technology for quantitative and quick evaluation, monitoring and regulation in a large scope in the Loess Plateau.