摘要
通过１９９２年３月～１９９４年５月对赤桉一山毛豆人工幼林地的观测，在雨季降水平均４８１ｍｍ，比多年平均值少１７％的条件下，林木未出现萎蔫和死亡，全年土壤平均含水量在１１％以上，在最干的３～５月份，土壤水分也能满足林木存活；水分输入后被林冠截留部分约占总降水量的１０％，地表流失量仅占３％左右，大部分水分渗入土壤。在无任何地下水补给，天然降水作为唯一水分来源的情况下，干热河谷地区的营林和植被恢复应采取以获取最大的水分输入为主的整地、造林措施。
Through two year's observation, it was found out that no trees ever witheredor died
in the young Eucapytus manldnlensis ×Tophroria candida plantation when the
meanprecipitation was 17%less than that of the normal years。 Even if in the driest season
fromMarch to May,soil water content could meet the need of the young trees, In terms of
waterinput loss, the loss of crown-intercepting water amounts to 10%of the total
precipitation,while surface run-off only 3%。 In the dry and hot river valley areas where there is
no subter-ranean water available and rainfall is the only water source,afforestation and plant
vegetationrecovery should aim at obtaining the most water input。
出处
《林业科学研究》
CSCD
北大核心
1995年第6期651-657,共7页
Forest Research
基金
1991~1994年云南省应用基础研究基金青年基金
