干旱区生态系统耦合关系的特征分析

干旱区生态系统耦合关系的特征差异表现在水热状况、景观带谱、小气候效应以及人为活动等方面。在特定的区域上，经度、纬度、海拔以及下垫面的特征是决定系统耦合特征最为基本的要素；而自然地理要素的变化，则是区分和判定耦合关系及其类型的重要因素。依据自然地理学与景观生态学等学科的理论与方法，结合相关原则，对具有典型意义的MODS耦合关系——昆仑山一和田绿洲一塔克拉玛干沙漠系统，以及天山一阜康绿洲一古尔班通古特沙漠系统的耦合关系的特征进行了比较，并分析了MODS耦合关系的一般规律。

Characteristic analysis on ecosystem coupling relations in arid zone

The differences of ecosystem coupling relation characteristics in arid zone can be found by water-heat condition, land-scape band spectrum, microclimate effects and factitious activities, and so on. Longitude, latitude, altitude and land coverage features are the most basis elements for ecosystem coupling characteristics. Meanwhile, variations of some physical geographical factors are important elements for characteristic discrimination and type classification. Based on theory and methodology of physical geography and landscape, combined with some related principles, two typical MODS coupling relations, such as, Kunlun Mountain, Hotan oasis and Taklimakan desert system and Tianshan mountaion, Fukang oasis and Guerbantonggute desert system are compared. Further-more, general patterns and laws are analyzed in MODS.