摘要
本文对北京市八达岭石佛寺浅石山区7种典型人工纯林枯落物层和土壤层水文效应进行了初步研究。结果表明：桔落物总储量变化范围在9．47t·hm-2-20．82t·hm-2之间，最大持水量的变化范围为15．96t·hm-2～51．97t·hm-2，核桃楸纯林有效拦蓄能力最强，为40．48t·hm-2，有效拦蓄能力在12．35t．hm～～40．48t·hml2之间；枯落物持水量与浸泡时间呈明显对数关系，R〉0．91，枯落物吸水速率与浸泡时间呈明显幂函数关系，R〉0．97；土壤容重均值变化范围为0．91g·cm-3～1．24g·cm-3，总孔隙度的变动范围为39．39％～58．94％；土壤层有效持水能力山杨纯林最强，为86．03t·hm-2，华山松纯林持水能力最弱，为22．23t·hm一，土壤入渗速率与入渗时间呈明显幂函数关系，R〉0．91。由此可知，核桃楸纯林水源涵养能力最强。
A prehminary study of hydrological effects of litters tayer and soil layer were carried out in seven kinds of artificial forest stands in Badaling shifosi shallow mountain of Beijing. The result showed that： The litter total storage capacity was about 9.47 t hm-2 -20.82 t hm-2, the maximum water holding capacity ranged from 15.96 t hm-2 to 51.97 t hm-2, the modified intercep- tion amount of Juglans Mandshurica Maxim pure forest was the strongest to 40.48t ~ hm-2, the modified interception capacity was about 12.35 t - hml - 2 - 40.48 t ~ hm -2 ; Water holding capacity and soaking time of without decomposition litter and semi - decomposition litter both had visible logarithmic relationship, R 〉 O. 91, absorption rate and immersion time was power function relationship, R 〉 0. 97; The average of soil bulk density ranged from 0.91 g ~ cm-3 to 1.24g ~ cm-3 ,total soil porosity was about 39.39% -58.94% ; The soil water - holding capacity of Populus Davidiana pure forest was the most powerful to 86.03 t ~ hm -2, and Pinus Armandii Franch pure forest was the worst to22.23 t hm-2 ,infiltration rate and infiltration fit time was power function, R 〉 0.91. Comprehensive anal- ysis, Juglans mandshurica pure forest water conservation capacity was the strongest.
出处
《内蒙古农业大学学报（自然科学版）》
CAS
北大核心
2013年第5期53-59,共7页
Journal of Inner Mongolia Agricultural University(Natural Science Edition)
基金
北京市科技专项(Z111105055311043)
关键词
北京山地
人工纯林
枯落物
土壤
水文效应
mountain of Beijing
artificial pure forest
litters
soil
hydrological effect
