作　　者： ; ; ; ; ; ;

机构地区： 河北农业大学

出　　处： 《水土保持学报》 2010年第1期119-122,共4页

摘　　要： 生态抚育是培育森林的基础和关键性技术环节,也是森林生态系统经营的重要组成部分。该文比较了生态抚育措施对华北落叶松(Larix principis-rupprechtii Mayr)幼龄林森林枯落物和土壤水文效应的影响。研究结果表明:生态抚育后改变了林地光照、温度等环境条件,有利于枯落物的分解,抚育后华北落叶松幼龄林林地枯落物总储量减少41%,枯落物自然持水量、最大持水量、有效持水量和实际拦蓄量也明显减小。抚育改变了表土层的结构,从而降低了土壤的容重,提高了林地表层的毛管孔隙度和总孔隙度,改善了土壤的通气性能,提高了土壤的持水量,使抚育后的林地土壤稳渗速率增加(0.33mm/min),林地的土壤水分渗透能力增强,有利于减小或遏制水土流失。 Ecological tending is the foundation and key technology of forest conservation,also an important component of forest ecosystem management. This paper compares the effects of ecological tending on the litter and soil hydrology in young stand of north-China larch. The results show that：Ecological tending change the environmental conditions of light and temperature,which is beneficial to the decomposition of litter,total reserves of litter reduce by 41%.The natural water-holding,maximum water-holding capacity,effective water-holding capacity and actual water-storing capacity of litter decreased significantly. Tending changed the structure of surface soil,thereby reducing the soil bulk density,improved the capillary porosity and total porosity,the ventilation performance and the water holding capacity of the soil. Tending increased the steady infiltration rates（0.33 mm/min） and water infiltration capacity of soil,which is beneficial to decrease or containment of soil erosion.

关 键 词： 生态抚育 华北落叶松 枯落物 水文效应

领　　域： [农业科学]