| Suitable scale of Weigan River plain oasis |
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| 作者单位： | HU ShunJun（Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Key Laboratory for Agricultural Soil and Water Engineering in Arid Areas of Ministry of Education, Yang） ;
SONG YuDong（Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ;
TIAN ChangYan（Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China） ;
LI YueTan（Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
LI XiuCang（Key Laboratory of Oasis Ecology and Desert Environment, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, (U)rümqi 830011, China;Graduate University of Chinese Academy of Sciences, Beijing 100049, China） ;
CHEN XiaoBing（Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;） ; |
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| 基金项目： | 中国科学院知识创新工程项目;国家自然科学基金 |
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| 摘 要： | Desert coexists with oasis in long time, and the existence and development of oasis system demand better oasis vegetation ecological system. Oasis scale of arid zone plain encircling water should be determined in case of desertification caused by land over-reclamation under the circumstance of water resources shortage. Steady oasis with virtuous circle must have appropriate land use structure for agriculture, forestry and graziery. The study on the suitable scale and developmental space of oasis will provide theoretical and applicable foundation for effective construction of oases. By analyzing the hydrothermal, water and soil balance, an optimal mathematical model has been established. Based on hydrometeorology data collected for years in Weigan River plain, and by the principle of water balance, a calculation has been made of the water resources for evapotranspiration and the optimal acreage of oasis and cultivated land, which shows that the water resources for evapotranspiration in the Weigan River plain oasis is 22.32×108 m3 and the optimal oasis acreage under the condition of conventional irrigation mode is 3716.06 km2, in which the suitable cultivated land acreage is 1564.79 km2. Under the condition of water-saving irrigation, the suitable oasis acreage is 5515.49 km2, in which the suitable cultivated land acreage is 2322.31 km2. The oasis area had reached 4123 km2, and the cultivated land acreage had reached 1507 km2 after the Agriculture Irrigation Drainage Water Project of World Bank Loan in Weigan River basin was finished in 1997. The oasis and cultivated land acreage will be more suitable, and the oasis scale can be enlarged moderately by means of water saving irrigation.
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Suitable scale of Weigan River plain oasis |
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| Authors: | HU ShunJun SONG YuDong TIAN ChangYan LI YueTan LI XiuCang CHEN XiaoBing |
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| Abstract: | |
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| Keywords: | suitable size oasis scale hydro-thermal balance equilibrium of water and land Weigan River |
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