Study on the Characteristics of Ecological Water Requirement in Maijishan Scenic Spot  

麦积山景区生态需水特征(英文)

作　　者：蒲金涌[1,2] 李晓薇[3] 

机构地区：[1]中国气象局兰州干旱气象研究所,中国气象局干旱气候变化与减灾开放实验室,甘肃省干旱气候变化与减灾重点实验室,甘肃兰州730020 [2]天水市气象局,甘肃天水741000 [3]仲恺农业工程学院环境科学与工程学院,广东广州510550

出　　处：《Agricultural Science & Technology》2012年第9期1971-1976,1996,共7页农业科学与技术（英文版）

基　　金：Supported by the Special Fund for Agro-scientific Research in the Public Interest,China(GYHY201106029)~~

摘　　要：[Objective] This study aimed to explore the characteristics of ecological water requirement in Maijishan Scenic Spot. [Methed] The characteristics of ecologi- cal water requirement in Maijishan Scenic Spot were analyzed based on,the data of soil humidity and meteorology of the spot. [Result] The result showed that the actual annual ecological water requirement in the spot was 678×10^6 m^3, and the proportion of soil water and evapotranspiration were 21% and 79%, respectively; the minimum annual ecological water requirement quota in the spot was 480.27×10^6 m^3, and the proportion of soil water and evapotranspiration were 16% and 84%, respectively; the minimum annual suitable ecological water requirement quota in the spot was 624.22×10^6 m^3, and the proportion of soil water and evapotranspiration were 18% and 82%, respectively. The precipitation was 614×10^6 m^3, and consumptive water surplus reached up to 78×10^6 m^3. The years when the precipitation was higher than the evapotranspiration accounted for 76%. Since 1980s, the evapotranspiration showed a linearly increasing trend. The precipitation was higher than the evapotranspiration from Jun. to Oct. and less than the evapotranspiration from Nov. to Dec. and Jan. to May. Evapotranspiration water requirement was regulated by soil water. The dis- parity between precipitation and evapotranspiration was huge in spring, thus having certain influence on waterfalls and streams in the spot. [Conclusion] The results of this study provided a basis for the rational use and long-term planning of the water sources in Maijishan Scenic Spot.

关 键 词：Maijishan Scenic Spot Ecological Water Requirement CHARACTERISTICS 

分 类 号：S274[农业科学—农业水土工程]