摘要
对冀北山地4个海拔梯度的华北落叶松(Larix principis-rupprechtii)人工林枯落物层及土壤层水文效应进行研究。结果表明:枯落物总蓄积量、最大持水量、有效拦蓄能力均随海拔升高而增大,枯落物总储量在8.19～39.49t/hm2之间,最大持水量在17.76～74.12t/hm2之间,有效拦蓄能力在14.56～54.60t/hm2之间。枯落物持水量与浸泡时间呈明显对数关系,枯落物吸水速率与浸泡时间呈明显幂函数关系。土壤容重随海拔升高而减小,变化范围为0.89～1.13g/cm3,总孔隙度随海拔升高先增大而后减小,土壤层有效持水量随海拔升高先减小而后增大,土壤入渗速率与入渗时间呈明显幂函数关系。
A preliminary study of hydrological effects of litters layer and soil layer of Larix principis-rupprechtii was carried out in the four different altitudes of north mountain of Hebei province.The results showed： The litter total storage capacity,the maximum water holding capacity and modified interception capacity are increased with the increase of altitude,the litter total storage capacity was about 8.19~39.49 t/hm2,the maximum water holding capacity was about 17.76~74.12 t/hm2,the modified interception capacity was about 14.56~54.60 t/hm2.Forest litters had visible logarithmic relationship,absorption rate and immersion time was power function relationship.The soil bulk density decreased with increasing elevation,the average of soil bulk density ranged from 0.89 g/cm3 to 1.13 g/cm3,with the altitudes increase,the total soil porosity increased then decreased,the soil water-holding capacity decreased then increased,infiltration rate and infiltration fit time was power function. 更多
出处
《水土保持学报》
CSCD
北大核心
2012年第3期216-221,共6页
Journal of Soil and Water Conservation
基金
林业公益性行业科研专项“冀北山区典型森林生态系统健康经营技术研究与示范”(200804022F)
关键词
冀北山地
华北落叶松
海拔
枯落物
土壤水文效应
north mountain of Hebei； Larix principis-rupprechtii； altitudes； litters； hydrological of soil effect；
