河北雾灵山不同密度油松人工林枯落物及土壤水文效应  

Soil Hydrological Effects and Forest Litters of Pinus tabulaeformis Plantation Under Different Densities in Wuling Mountain of Hebei

作　　者：石媛[1] 鲁绍伟[2,3] 陈波[2] 杨新兵[1] 李少宁[2] 白翠玲[3] 

机构地区：[1]河北农业大学林学院,河北保定071000 [2]北京市农林科学院林业果树研究所,北京100093 [3]石家庄经济学院,石家庄050031

出　　处：《水土保持学报》2014年第3期92-97,共6页Journal of Soil and Water Conservation

基　　金：河北省教育厅项目"雾灵山暖温带典型森林生态系统服务功能及其价值研究(2008483);林业公益性行业科研专项"森林生态服务功能分布式定位观测与模型模拟"(201204101)

摘　　要：以河北雾灵山自然保护区内4种不同密度（881,940,1 252,1 400株/hm2）的油松人工纯林为研究对象,对其枯落物层和土壤层水文效应进行初步研究。结果表明：枯落物总储量变化范围为29.11~47.14t/hm2,且在一定林分密度内,随密度增加枯落物储量增加,最大持水量的变化范围为63.79~108.18t/hm2,有效拦蓄能力在43.25~81.44t/hm2之间,以1 252株/hm2有效拦蓄能力最强;枯落物持水量与浸泡时间呈明显对数关系（R〉0.90）,枯落物吸水速率与浸泡时间呈明显幂函数关系（R〉0.99）;土壤容重均值变化范围为0.88~1.26g/cm3,总孔隙度的变化范围为46.00%~62.27%;土壤层有效持水能力以密度为1 400株/hm2时最强,有效持水量为66.17t/hm2;土壤入渗速率与入渗时间呈明显幂函数关系（R〉0.84）。综合分析可知,密度为1 400株/hm2的油松林水源涵养能力最强。A preliminary study of the hydrological effects of forest litters and soil was carried out in 4densities（881, 940, 1 252, 1 400 plants per hectare） Pinus tabulaeformis plantation in Wuling Mountain of Hebei. The results showed that： The litter total accumulation was 29. 11-47. 14 t/hm^2, and in a certain stand density, litter accumulation increased with the increase of stand density, maximum water-holding volume ranged from 63.79 t/hm^2 to 108.18 t/hm^2 , effective retaining capacity was 43.25-81.44 t/hm^2 , and the strongest effective retaining capacity stand was 1 252 plants per hectare. Water holding capacity of litterwas logarithmic relationship with immersion time（R〉0. 90）, and water absorption rate showed a power function with the immersion time（R〉0.99）. Soil bulk density was 0.88-1.26 g/cm^3 , the total porosity was 46%-62.27%, the stand of 1 400 plants per hectare had the strongest soil available water holding, which was 66.17 t/hm^2. Soil infiltration rate and infiltration time were obvious power function relationship（R〉 0.84）. The comprehensive analysis showed that, when there were 1 400 plants per hectare, the Pinus tabulaeforrnis forest had the strongest water capacity.

关 键 词：河北雾灵山 油松林 枯落物 土壤水文效应 

分 类 号：S715.7[农业科学—林学]