Analysis of the impacts of human activities on landscape patterns in inland river basin of arid zone:Taking the middle reaches of Hetian River as an example
人类活动对干旱区内陆河流域景观格局的影响分析——以新疆和田河中游地区为例

Inland river basin in arid zone is a main residence,but its ecological environment is very vulnerable.The impacts of human activities on local landscape patterns are severe.It is of practical significance to the eco-environmental protection and social development through study-ing the impacts of human activities on landscape patterns in inland river basin of arid zone.Taking a typical locality as an example,the landscape pattern maps in1959and2000of the middle reaches of Hetian River are compiled using RS and GIS,and the landscape patterns are measured.Based on the maps and measured data,the impacts of human activities on landscape patterns in inland river basin of arid zone are discussed.The analytic results indicate that macro-landscape patterns in inland river basin of arid zone do not change obviously.On a small scale,human built reservoirs and artificial ditches,regulated and controlled spatial reassignment of local waters impact the eco-function of water during landscape development,hence the local landscape pattern.The existence and increase of artificial landscapes affect more and more the development of local landscape pattern,such as artificial ditches,artificial reservoirs,farmland,and residential area.These denote that human activities are not a dominant factor of local land-scape pattern development,but its forces and incidence of impact on landscape patterns in in-land river basin of arid zone are enhancing increasingly.Landscape patterns in inland river basin of arid zone are affected by natural and artificial factors,the dynamic change is rapid,and its chain domino effects are dramatic,so human activities in inland river basin of arid zone should be cautious.