干旱地区农业研究2012，Vol.30Issue(3)：205-213,9.
土地利用变化时空特征与区域发展关系研究——以渭干河流域为例
Characteristics of temporal and spatial dynamic changes of land use and their relationship with regional development——A case study in the Weigan River Basin
摘要
Abstract
Based on the remote sensing images in 1990, 2000 and 2008, the relative rate and net speed of land use change were considered, and the integrated indexes of land use degree was also calculated. Spatial and temporal differences in the change and degree of land use in the Weigan River Basin in recent 20 years were analyzed, and the relationship between land use degree and level of social and economic development was discussed. The results showed that: (1) The main land use types in Weigan River Basin were grassland and unused land, the percentages of which were over 31% and 57% , respectively. There were spatial and temporal differences in the size of area distribution and change of land use types. During 1990-2008, the overall trend of land use in this oasis presented an increase in forest land, water area and construction land, and a decrease in grassland, wetland and unused land, while cultivated land area increased first and then decrease, and the overall trend was increase. (2) Because of the larger proportion of unused land area, the integrated index of land use degree was lower, which showed a significant improvement in recent years. The land use degree index in the counties of Kuqa, Xayar, and Xinhe increased gradually, while that in Baicheng County reduced after the first increase, and it increased in overall. The efficiency of land use in all counties in Weigan River Basin was growing year by year, and the growth rate in 2000-2008 was larger than that in 1990-2000. (3) There was a positive correlation between the degree of land use and the level of social and economic development. The higher the land use degree index was, the higher the GDP per unit area and the index of spatial urbanization were. The spatial differences in the proportion of unused land area had a greater effect on the differences in the level of urbanization. (4) These changes were tightly related to human-activity enhancements and social and economic development.关键词
土地利用变化/土地利用程度综合指数/空间城市化/时空差异/渭干河流域Key words
land use change/integrated indexes of land use degree/spatial urbanization/spatial and temporal dif- ferences/Weigan River Basin分类
管理科学引用本文复制引用
唐宏,乔旭宁,杨德刚,黄凤..土地利用变化时空特征与区域发展关系研究——以渭干河流域为例[J].干旱地区农业研究,2012,30(3):205-213,9.基金项目
国家自然科学基金项目(40971108) （40971108）
河南理工大学博士基金(B2010-51) （B2010-51）
中国科学院"西部博士资助项目"(XBBS200803) （XBBS200803）
河南理工大学青年骨干教师计划项目 （）
