| Characteristics of temporal and spatial dynamic changes of land use and their relationship with regional development——A case study in the Weigan River Basin |
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| DOI：10.7606/j.issn.1000-7601.2012.03.36 |
| Key Words: land use change integrated indexes of land use degree spatial urbanization spatial and temporal differences Weigan River Basin |
| Author Name | Affiliation | | TANG Hong | Xinjiang Insitute of Ecology ard Geography, CAS, Urumqi, Xinjiang 830011, China
Graduate Unitersity of the Chinese Academy of Sciences, Beijing 100049, China | | Qiao Xuning | Xinjiang Insitute of Ecology ard Geography, CAS, Urumqi, Xinjiang 830011, China
College of Surveying and Land lnformation Engineering, He’ nan Polytechnic University, jiaozuo, He’ nan 454003, China | | YANG Degang | Xinjiang Insitute of Ecology ard Geography, CAS, Urumqi, Xinjiang 830011, China | | HUANG Feng | Xinjiang Insitute of Ecology ard Geography, CAS, Urumqi, Xinjiang 830011, China
Graduate Unitersity of the Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: |
| Based on the remote sensing images in 1990, 2000 and 2008, the relative rate and net spced of land use change
were considered, and the integrated indexes of land use degree was also ealculated. Spatial and temporal differ-ences in the change and degree of land use in the Weigan River Basin in recent 20 years were analyzed, and the relation-ship 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 Iand 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 in-creased 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
yeans. The land use degree index in the counties of Kuqa, Xayar, and Xinhe increased gradually, while that in Baicheng County re-duced 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 pos-itive correlation between the degree of land use and the level of social and economic development. The higher tbe land use degree index was, the higher the GDP per unit area and the index of spatial urbanization were. The spatial differ-ences in the proportion of unused land area had a greater effect on the differenoes in the level of urbanization. (4)These changes were tightly related to human-activity enhancements and social and economic development. |
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