【摘要】 对九龙山不同立地土壤蓄水量和土壤水分有效性研究结果表明：阴坡中下部的人工油松林、中上部的灌木林和裸地，以及阳坡中下部的人工侧柏林、中上部的灌木林和裸地的土壤有效涵蓄量分别为：１４９．６３、１３３．４９、１０２．４９、９９．９３、９５．９２、７０．７８ｍｍ；土壤的饱和蓄水量变化范围在１６０５．８６～２３５３．６６ｔ／ｈｍ２之间。土壤水分只有７、８两月处在易效水阶段，其它时间均属难效水范围，即使雨季的土壤有效水分也难以达到田间持水量，春旱时期土壤水分接近或低于土壤凋萎含水量。更多还原

【Abstract】 The results from the studies on water storage capacity and water availabilityin soil of different types of sites in Jiulongshan showed that soil available water content were149. 63、133. 49、102. 49、99. 93、95. 92 and 70. 78 mm respectively for man- made Pinus tabu-laeformis woodland in middle- lower schattenseite, shrubland and bare soil in middle -upperschattenseite, man-made Platycladus orientalis woodland in middle-lower endroit and shrub- land and bare soil in middle-upper endroit;soil saturation water content ranges from 1605. 86t/hm2 to 2 353. 66t/hm2. Only is soil water content readily available water during the periodof July～August,in other time, it is irreadily available water。 Even in rainy season,soil avail- able water content is below field moisture retention. Soil water content is near to (or below)wilting water storage capacity of soil during spring drought season.更多还原