Influence of Policy-driven Land Use Transformation on Multifunctional Land Use in the Middle Reaches of the Heihe River Basin

MENG Jijun1,†, ZHU Lijun1, WANG Qi1, GUO Liren1, ZHANG Weijia2

1. Laboratory for Earth Surface Processes (MOE), College of Urban and Environmental Sciences, Peking University, Beijing 100871; 2. Ganzhou Branch of Zhangye Ecological Environment Bureau of Gansu Province, Zhangye 734000; † Corresponding author, E-mail: jijunm@pku.edu.cn

Abstract Selecting the middle reaches of the Heihe River as the study area, with a dataset including land cover, geospatial, physical geography and social statistical data, the paper discusses the influence of land use policies on land multifunction from 2000 to 2014, based on land use transformation analysis and assessment on multifunctionality of land use. The results indicate that the land use transformation of the study area is distinct. Land of living doubled in the period and land of manufacture increased by 33%. Ecological land remained unchanged basically. The functions of land doubled. Social and economic functions are the main features of land use and improve a lot. Environmental and cultural functions are weaker than social and economic functions. Land policy has largely affected the land’s multifunctional use. Land development have influenced on employment, manufacture and resource maintenance. Occupied farmland for construction can improve the social security and economic supply function, while the influence of returning farmland to forest and grass on land use multi-function is not significant. Key words land use transformation; multifunctional land use; land use policy; middle reaches of Heihe River Basin