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Land use change characteristics affected by water saving practices in Manas River Basin,China using landsat satellite images

引用

International Journal of Agricultural and Biological Engineering 2017年第6期10卷 123-133页

作者： Yang Guang Chen Dong He Xinlin Long Aihua Yang Mingjie Li Xiaolong College of Water Conservancy and Architectural Engineering Shihezi UniversityShihezi 832000China Key Laboratory of Modern Water-Saving Irrigation of Xinjiang Production and Construction Corps Shihezi 832000China China Water Resources&Hydropower Science Research Institute Beijing 100038China

The characteristics and influencing factors of land use change under arid conditions were studied in the Manas River Basin in Xinjiang Region,Northwest *** satellite images acquired in 1976,1990,2000,2010 and 2015 over the study area were used as basic *** use change,the rate of change of land use,land use transfer and other aspects revealed the characteristics of land use change and related factors as influenced by water conditions in the *** results showed that:(1)Over nearly 50 years,land reclamation in the Manas River Basin resulted in the rapid expansion of an artificial oasis area,and promoted the process of‘oasis urbanization’,and accelerated the development of the river basin economy.(2)In 2000,the popularization of drip irrigation under mulch technology led to the rapid growth of cultivated land and development land in the ***,the water table declined in the desert area of the lower reaches of the river basin,and the area occupied by sparse shrub forest and grassland decreased.(3)Before popularization of water-saving technology,woodland,grassland and development land transformed to cultivated land in the amounts of 93.46 km^(2),2542.93 km^(2) and 137.53 km^(2),respectively,and woodland transformed in the amount of 189.64 km^(2).After water-saving technology was popularized,woodland,grassland and development land were transformed into cultivated land in the amounts of 567.41 km^(2),1756.2 km^(2) and 37.36 km^(2),respectively.(4)The popularization of water-saving technology made the dynamic degree of cultivated land and development land more active,and further increased landscape fragmentation and landscape *** level of urbanization development,the level of economic development and the dry humidity of the basin became the main factors affecting the change of land use in the basin.

关键词： land-use change spatial characteristics influencing factor Manas River Basin landsat satellite images

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