Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (17): 250-255.doi: 10.11924/j.issn.1000-6850.2013-2250

Special Issue: 资源与环境 农业生态

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

  

  • Received:2013-08-23 Revised:2013-09-09 Online:2014-06-14 Published:2014-06-14

Abstract: In order to study the variation characteristics of water and provide the scientific basis for applying the water resource, based on the soil moisture and meteorological data, the characteristics of ecological water requirement in the Maijishan scenic spot had been analyzed. The result showed that: the water requirement was 678×106 m3 in all and the soil water accounted 21%, evapotranspiration accounted 79%. The least ecological water requirement quota was 480×106 m3 in all and soil water accounted 16%, evapotranspiration accounted 84%. The least suitable ecological water requirement quota was 624×106 m3 in all and soil water accounted 18%, evapotranspiration accounted 86%. The precipitation was 614×106 m3 and the consumption water surplus reached 78×106 m3. The year when the precipitation was over the evapotranspiration accounted 76% . The evapotranspiration turned liner increase trend since 1980s. The precipitation was over the evapotranspiration in June to October. The precipitation was under the evapotranspiration in November to December, January to May and evapotranspiration water requirement depend on soil water. The difference of precipitation and evapotranspiration was bigger and that influenced on waterfall and stream in Maiji scenic spot.