基于CBERS-2遥感数据的艾比湖流域景观生态分类系统

Landscapes classification of Ebinur lake basin based on CBERS-2 RS imagines

景观生态分类是景观生态学研究的一项重要内容,是开展景观评价、规划与管理等工作的基础。应用CBERS-2遥感影像数据,以地质地貌、土地利用/土地覆被状况、地表植被等因子为分类依据,对艾比湖流域景观生态类型进行了自上而下地划分。研究认为:景观生态分类是建立在尺度的基础之上,不同尺度上的分类单元在纵向上构成了景观带至景观元的多等级景观生态分类体系;艾比湖流域景观生态类型可划分为2个景观类(4个景观亚类)、14个景观系、27个景观型,且该分类系统属于景观生态分类等级阶梯中的中尺度分类段;艾比湖流域景观生态分类系统,对进一步认识和科学合理地利用、规划及管理干旱区内陆湖泊流域的景观具有重要意义。

Landscape classification is the focus of landscape ecology, which is the foundation of landscape evaluation, landscape planning and landscape management etc. As a new subject, a consolidated landscape classification system has not been constructed, so RS, GIS and GPS technologies may provide some useful measures for studying and discussing the theories, methods, and applications of landscape classification. Ebinur Lake is a significant and typical inner lake in arid land, lying in Boletrala Prefecture of the Northwest of Xinjiang. In the past 50 years, as the increase of human activities and aggravation of the drough in the Ebinur Lake basin had been affected seriously. Taking t, the environmental evolution and landscape patterns the factors of the geology and physiognomy, land use and cover, vegetations as the classification principles, the CBERS -2 RS images were used to present a descending landscape classification system in the Ebinur lake basin. The landscape in the research area was divided into 2 landscape categories, 4 landscape subcategories, 14 landscape classes and 27 landscape types. This landscape classification system was regarded as the middle scale classification segments of landscape hierarchical classification system. The study on landscape classification of Ebinur lake basin is of great importance to understand the landscape characteristics, evolvement disciplines of the arid land inner lake basin, and to promote the utilizing, planning and management the landscapes in Ebinur lake basin reasonably.