首页|Water consumption in artificial desert oasis based on net primary productivity
Water consumption in artificial desert oasis based on net primary productivity
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
Analysis 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 18.41×108-21.9×108 m3 for irrigation. Without taking precipitation into account, the water consumption in farmland accounted for 77.1%-77.8% (or about 13.97×108-16.84×108 m3) of the oasis vegetation water consumption and in the farmland protection system accounting for 22%. The growing period precipitation in desert environments is about 7.02×108 m3, and the total annual precipitation is about 8.29×108 m3. The modeled water consumption of desert vegetation, however, is about 4.57×108 m3, 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.
net primary productivity (NPP)transpiration coefficientwater consumptionoasis
ZHAO WenZhi、NIU ZuiRong、CHANG XueLi、LI ShouBo
展开 >
Laboratory of Ecohydrology and Integrated River Basin Science, Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences, Lanzhou 730000, China
Linze Inland River Basin Research Station, Chinese Ecosystem Research Network Lanzhou 730000,China
Geography and Resource Management College, Ludong University, Yantai 264025, China
国家重点基础研究发展规划(973计划)Key Project of Knowledge Innovation Program of Chinese Academy of Sciences国家自然科学基金
NETL
NSTL
万方数据
