Water consumption in artificial desert oasis based on net primary productivity
Zhao WenZhi1,2; Niu ZuiRong1; Chang XueLi3; Li ShouBo1,2
AbstractAnalysis of the water consumption is the basis for water allocation in oasis. However, the method of estimating oasis water consumption remains a great challenge. Based on net primary productivity (NPP) and the transpiration coefficient, a vegetation water consumption model was developed to estimate the water consumption in desert oasis in ERDAS environment. Our results demonstrated that the ecosystem in the middle reaches of the Heihe oasis consumed water of 18.41x10(8)-21.9x10(8) m(3) for irrigation. Without taking precipitation into account, the water consumption in farmland accounted for 77.1%-77.8% (or about 13.97x10(8)-16.84x10(8) m(3)) of the oasis vegetation water consumption and in the farmland protection system accounting for 22%. The growing period precipitation in desert environments is about 7.02x10u m(3), and the total annual precipitation is about 8.29x10(8) m(3). The modeled water consumption of desert vegetation, however, is about 4.57x10(8) m(3), equivalent to only 65% of the growing period precipitation or 55% of the total annual precipitation. The modeled value equals to the cumulative precipitation of greater than 5 mm, which is defined as the effective precipitation in arid desert.
KeywordNet Primary Productivity (Npp) Transpiration Coefficient Water Consumption Oasis
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedGeology
Indexed BySCI
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000281686200012
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorZhao WenZhi
Affiliation1.Chinese Acad Sci, Lab Ecohydrol & Integrated River Basin Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
2.Chinese Ecosyst Res Network, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China
3.Ludong Univ, Geog & Resource Management Coll, Yantai 264025, Peoples R China
Recommended Citation
GB/T 7714
Zhao WenZhi,Niu ZuiRong,Chang XueLi,et al. Water consumption in artificial desert oasis based on net primary productivity[J]. SCIENCE CHINA-EARTH SCIENCES,2010,53(9):1358-1364.
APA Zhao WenZhi,Niu ZuiRong,Chang XueLi,&Li ShouBo.(2010).Water consumption in artificial desert oasis based on net primary productivity.SCIENCE CHINA-EARTH SCIENCES,53(9),1358-1364.
MLA Zhao WenZhi,et al."Water consumption in artificial desert oasis based on net primary productivity".SCIENCE CHINA-EARTH SCIENCES 53.9(2010):1358-1364.
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