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林业科学 ›› 2006, Vol. 42 ›› Issue (2): 8-12.doi: 10.11707/j.1001-7488.20060202

• 论文及研究报告 • 上一篇    下一篇

江西大岗山常绿阔叶林生态系统水量平衡的研究

崔向慧 李海静 王兵   

  1. 中国林业科学研究院森林生态环境与保护研究所,北京100091
  • 收稿日期:2004-03-30 修回日期:1900-01-01 出版日期:2006-02-25 发布日期:2006-02-25

Water Balance of Evergreen Broad-Leaved Forest Ecosystem in Dagangshan Mountain, Jiangxi Province

Cui Xianghui,Li Haijing,Wang Bing   

  1. Institute of Forest Ecology, Environment and Protection, CAF Beijing 100091
  • Received:2004-03-30 Revised:1900-01-01 Online:2006-02-25 Published:2006-02-25

摘要:

采用水量平衡方法和集水区技术,利用2000年5月至2004年6月的观测资料,研究大岗山林区常绿阔叶林生态系统的水量平衡问题。结果表明:系统平均年输入降水1772.7mm,其中44%集中在4—6月,主要支出项为径流、蒸散及土壤蓄水,分别为854.3、852.5和65.9mm,占降水的48.2%、48.1%和3.7%;林冠对降水的分配具有明显的季节变化,2002年在降水量大、降水强度和降水频率高的雨季(4—9月),林冠截留率偏小(16.5%),而在干旱季(当年10月至次年3月),截留率相当大(22.2%);集水区平均年径流输出总量为854.3mm,径流系数为48.2%,其中地下径流为853.1mm,地表径流仅为1.2mm。

关键词: 大岗山, 常绿阔叶林, 水文特征, 水量平衡

Abstract:

Using the method of water-balance, watershed experiment technique and located observation, based on the data and information collected from May, 2000 to June, 2003, the water balance of evergreen broad-leaved forest ecosystem in Dagangshan Mountain is studied. The results showed: Average annual precipitation was 1 772.7 mm,mainly in April to June,and 48.2%,48.1% and 3.7% of which allocated to total runoff(854.3 mm), evapotranspiration (852.5 mm) and change of soil water storage(65.9 mm);Precipitation distribution has obviously seasonal change in crown level in 2002, in rain season(April—September),its crown interception ratio(16.5%) is less than drought season(October—next March);Average annual output gross of watershed is 854.3 mm, the pathway of runoff flow is 48.2%. Mainly of this underground runoff flow is 853.1 mm, and the earth’s surface runoff flow is 1.2 mm.

Key words: Dagangshan Mountain, evergreen broad-leaved forest, hydrological properties, water balance