Dynamics and changes in spatial patterns of land use in Yellow River Basin, China

Rapid land use change has taken place in many arid and semi-arid regions of China over the past decade, such as in Yellow River Basin. In this paper, changes in the land use pattern of the Yellow River Basin were analyzed using Landsat TM data in 1990, 1995 and 2000. The aim was to improve the understanding of changes in land use with a view to identifying potentially more sustainable systems of land use. Firstly. the mathematical methodology was explored and developed for spatial pattern changes of land use, which include the degree index model of land use dynamic. index model of land use degree, mean center model of land use and transformation model of land use. Based on these models, the changing spatial patterns of land use were calculated and analyzed. During the period 1990-2000, the areas of cropland, built-up land and unused land all increased, the area of cropland increased dramatically by 2917 km(2), while the areas of grassland and woodland decreased by 4668 and 33 km(2), respectively. Meanwhile, the spatial pattern of land use also experienced a great change. Then the driving factors of land use change were investigated, the governmental policies on eco-environmental protection, population growth and meteorological conditions were the major factors that caused the land use change in the past decade. (C) 2009 Elsevier Ltd. All rights reserved.