Land Use Change in the Watershed of the Ningxia-Inner Mongolia Reaches of the Yellow River During 1990-2010

doi:10.7522/j.issn.1000-694X.2013.00415

JOURNAL OF DESERT RESEARCH

2014, Vol. 34

Issue (4): 1167-1176 DOI: 10.7522/j.issn.1000-694X.2013.00415

Land Use Change in the Watershed of the Ningxia-Inner Mongolia Reaches of the Yellow River During 1990-2010

Tian Xiafei, Xue Xian, Liao Jie, Du Heqiang, Duan Hanchen, Xu Manhou

Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract Using Landsat TM and ETM+ satellite images as the basic data source, adopting geographic information system, we monitored land use change in the watershed of the Ningxia-Inner Mongolia reaches of the Yellow River during 1990-2010, then discussed the driving force of land use change by combining with climatic factors, human activities and policy factors, finally, analyzed the effect of vegetation coverage change on runoff and sediment load. Results showed that: (1) During 1990-2010, the area of constructive land and farmland increased by 1 310.04 km² and 611.15 km², respectively, however, the area of wetland and grassland decreased by 1 499.51 km² and 474.93 km², respectively. (2) The land use change in this basin experienced a process of slow change-obvious change-tremendous change in 1990-2000, 2000-2005 and 2005-2010. The speed of land use change was greater in 2000-2010 than that in 1990-2000. (3) The major patterns of land use change were the conversions of grassland and unused land to forest, farmland and grassland to constructive land, as well as unused land and grassland to farmland. (4) The variation of land use change was mainly affected by human activities and policy factors. Population increasing, economy development and environmental protection policy had significant effects on land use change. (5) During 1990-2010, the area of forest land and farmland increased by 543.19 km² and 611.15 km²respectively, which increased evaporation and irrigation water, thus reduced runoff. Vegetation coverage was increased from 34.7% in 1990 to 40.8% in 2010, which made the annual runoff and sediment load decreased significantly.

Key words: Yellow River watershed of the Ningxia-Inner Mongolia reaches land use change driving force

Received: 06 August 2013 Published: 20 July 2014

ZTFLH:

F301.24



	Articles by authors
	Tian Xiafei
	Xue Xian
	Liao Jie
	Du Heqiang
	Duan Hanchen
	Xu Manhou

Cite this article:

Tian Xiafei, Xue Xian, Liao Jie, Du Heqiang, Duan Hanchen, Xu Manhou. Land Use Change in the Watershed of the Ningxia-Inner Mongolia Reaches of the Yellow River During 1990-2010. JOURNAL OF DESERT RESEARCH, 2014, 34(4): 1167-1176.

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http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00415 OR http://www.desert.ac.cn/EN/Y2014/V34/I4/1167

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