Spatial-temporal Characteristics of Crop Virtual Water in Henan Province Based on GIS
Huang Huiping1,2 , Cao Mingming1 , Song Jinxi1 , Han Yuping2 , Chen Shanshan1
Author information+
1.College of Urban Environmental Science, Northwest University, Xi’an 710127, China； 2.School of Resources and Environment, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
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History+
Received
Revised
Published
2013-09-27
2015-04-02
2015-06-10
Issue Date
2015-09-10
Abstract
Based on GIS, the thesis discusses the regularity of time and region of the virtual water of 6 kinds of main crops in Henan Province from 1978 to 2013 through calculation and analysis. During 36 years in Henan Province, virtual water of 6 kinds of crops is in the declining trend under the wave, and in 2003 reaches the peak. It has relation with the reduction of output because of drought. In crop types, which the virtual water highest is cotton, the average in many years reaches 8 294.3 m3/t, and vegetable is the minimum, average value is only 163.4 m3/t. In the spatial distribution, 6 kinds of crops are different. According to the output of 2013, obtained by weight the first region is Sanmenxia, Zhengzhou, Xinyang, Pingdingshan, Luoyang, the second includes Jiyuan, Kaifeng, Nanyang, Zhumadian; and the third is Xinxiang, Hebi, Anyang, Puyang, the fourth grade is Luohe, Xuchang, Zhoukou, Shangqiu and the lowest is Jiaozuo. On the whole, the west, south virtual water is high, and the virtual water is low in northeast.
HUANG Hui-Ping, Cao-Ming-Ming, Song-Jin-Xi, Han-Yu-Ping, Chen-Shan-Shan.
Spatial-temporal Characteristics of Crop Virtual Water in Henan Province Based on GIS[J]. Areal Research and Development, 2015, 34(3): 167-171，176
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