摘要
采用对比分析方法,对位于浙江省富阳尖山的集约经营毛竹纯林(含垦复)、天然起源的毛竹木荷混交林,在2004年春季采集不同林分下0～10,20～30,40～50 cm 3个层次的土壤容重圈样品,测定土壤水分-物理性质(水分常数).结果表明,3类林分土壤总孔隙度是42.98V%～66.45V%,其中非毛管孔隙占总孔隙1/6～1/2,通透性良好.毛管孔隙/非毛管孔隙之比值为未垦复毛竹纯林(3.07)＞垦复毛竹纯林(2.20)＞毛竹木荷混交林(1.66),因而,毛竹木荷混交林土壤通气状况好于垦复毛竹纯林,未垦复毛竹纯林通气状况相对较差.若以0～50 cm层次着眼:毛竹纯林田间持水量8.43～30.02 mm,毛竹木荷混交林为3.76～48.94 mm;毛竹纯林最佳含水率下限为12.45～88.01 mm,毛竹木荷混交林为46.05～115.20 mm.毛竹木荷混交林的水源涵养潜力和改良土壤结构作用优于毛竹纯林,垦复之后的毛竹林土壤通透性显著提高,但蓄水量又小于相似立地条件下的毛竹纯林或竹木混交林.
In spring, 2004, the soil water-physical properties of 3 Moso bamboo （ Phyllostachys edulis ） stands of different management were analyzed at Jianshan mountain, Fuyang, Zhejiang province. The soil specimen came from three different soil layers which were, from the surface of earth to underground, 0 - 10cm, 20 - 30cm, 40 - 50cm respectively. The results were as fol- lows： Soil total porosity of 3 stands ranged from 42.98V% - 66.45V%, and non capillary porosity occupied nearly 1/6 - 1/2 of total porosity. The ratio of soil capillarity to non capillarity for three stands （pure Moso bamboo stand, reclamation Moso bamboo stand, Moso bamboo Mixed stand with Schima superha）were 3.07, 2.2, 1.66, therefore, the air permeability （V%） of three stands were different with pure Moso bamboo stand the best and Moso bamboo mixed stand the worst. The field capacity of soil thickness 0 - 50cm for two stands were 8.43 - 30.02mm （ pure Moso bamboo stand）, 3.76 - 48.94mm （ mixed Moso bamboo stand）, and the best limited water content for 2 stands above were 12.45 - 88.01mm （pure Moso bamboo stand）, 46.05- 115.20mm （mixed Moso bamboo stand） respectively. The three stands studied had different good properties with pure Moso bam- boo stand in soil moisture storage, reclamation Moso bamboo stand in soil perviousness, and mixed Moso bamboo stand in soil structure and water conservation.
出处
《林业科技开发》
2005年第6期12-15,共4页
China Forestry Science and Technology
基金
2001~2005年国际合作项目"中国主要竹产区的土地利用制度选择及其对环境的影响"(编号:200085401)
作者简介
高志勤（1967-）,男,博士,讲师,主要从事竹林生态系统结构与功能研究.通讯地址：311400,浙江省富阳市大桥路
