干旱区生态环境知识资源中心(Arid): Temporal and spatial changes of agricultural water requirements in the Lancang River Basin

Arid

	Temporal and spatial changes of agricultural water requirements in the Lancang River Basin
	Gu Shixiang; He Daming; Cui Yuanlai; Li Yuanhua
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2012
卷号	22 期号:3 页码:441-450
英文摘要	Based on the data of eight meteorological stations from the 1950s to 2007, current cropping patterns, field water moisture management, we use the Mann-Kendall and the Re-scaled Range Analysis methods to research the changes of humidity and crop irrigation water requirements in the Lancang River Basin. The results show that the annual and dry season average temperatures significantly increased, and the dry season rainfall increased while wet season rainfall decreased. Evaportranspiration (ET0) increased during both dry and wet seasons at all stations except Dali, Jianchuan and Gengma, and the aridity-humidity index decreased at most of the stations. The turning points of weather factors, ET0, the arid-ity-humidity index, paddy irrigation requirements and total agricultural water requirements occurred from the 1960s to the 1990s. The spatial changing tendency of paddy irrigation quota increased with the increase of altitude and latitude, and the correlation coefficients are 0.513 and 0.610, respectively. The maximum value is observed in Weixi, while the minimum in Mengla.
英文关键词	agricultural irrigation quota Lancang River the Longitudinal Range-Gorge Region
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:4543883
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335146
作者单位	Gu Shixiang, Wuhan University, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan, Hubei 430072, China.; Cui Yuanlai, Wuhan University, State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan, Hubei 430072, China.; He Daming, Asian International Rivers Center, Yunnan University, Kunming, Yunnan 650091, China.; Li Yuanhua, Department of Irrigation, Drainage and Rural Water Supply, MWR, Beijing 100053, China.
推荐引用方式 GB/T 7714	Gu Shixiang,He Daming,Cui Yuanlai,et al. Temporal and spatial changes of agricultural water requirements in the Lancang River Basin[J],2012,22(3):441-450.
APA	Gu Shixiang,He Daming,Cui Yuanlai,&Li Yuanhua.(2012).Temporal and spatial changes of agricultural water requirements in the Lancang River Basin.Journal of Geographical Sciences,22(3),441-450.
MLA	Gu Shixiang,et al."Temporal and spatial changes of agricultural water requirements in the Lancang River Basin".Journal of Geographical Sciences 22.3(2012):441-450.