不同密度马尾松人工林水源涵养能力的比较  

Comparison on Water-holding Capability of Pinus massoniana Plantations with Different Densities

作　　者：范志伟[1] 杨章旗[2] 

机构地区：[1]贵州大学林学院,贵阳550025 [2]广西林业科学研究院,南宁530002

出　　处：《广西林业科学》2012年第1期19-22,共4页Guangxi Forestry Science

基　　金：广西林业科技项目(林科字[2006]第20号);广西林业科技项目(桂林科字[2009]第4号);国家科技支撑计划项目(2006BAD24B0301-2)

摘　　要：对广西横县镇龙林场不同密度(2 m×2 m、2 m×1.5 m、1.5 m×1.5 m和1 m×1.67 m)的14年生马尾松(Pinus massoniana)人工林凋落物层和土壤层的水源涵养能力进行比较研究。结果表明:密度为2 m×2 m和1.5 m×1.5 m的马尾松林凋落物层蓄积量小于2 m×1.5 m和1 m×1.67 m的马尾松林蓄积量,1 m×1.67 m的马尾松林凋落物层蓄积量最大。凋落物层最大持水量与凋落物层蓄积量呈极显著正相关(P<0.01)。密度为2 m×2 m和1.5 m×1.5 m的马尾松林土壤层最大持水量大于密度为2 m×1.5 m和1 m×1.67 m的最大持水量;综合水源涵养力则取决于土壤层持水量的大小,4个林型的水源涵养力依次是2 m×2 m>1.5 m×1.5 m>2m×1.5 m>1 m×1.67 m。本研究为马尾松人工林生态功能量化研究提供科学依据。The water-holding capability of litter and soil in 14-year-old Pinus massoniana plantations with different densities（including 2 m × 2 m,1.5 m × 1.5 m,2 m × 1.5 m and 1 m × 1.67 m） was compared in Zhenlong forest farm of Guangxi province.The results showed that litter accumulation was higher in 2 m × 1.5 m and 1 m × 1.67 m plantations,and the biggest value was in 1 m × 1.67 m plantation.There was positive relationship between litter accumulation and its maximum water-holding capacity（P0.01）.The maximum water-holding capacity of soil tended to be higher in 2 m × 2 m and 1.5 m × 1.5 m plantations.The integrated water-holding capacity depended on the size of water-holding capacity in soil.The order was 2 m×2 m1.5 m×1.5 m2 m×1.5 m1 m×1.67 m.Our study provided scientific basis for quantization of ecological function in Pinus massoniana plantations.

关 键 词：马尾松 人工林 不同密度 水源涵养 

分 类 号：S791.248[农业科学—林木遗传育种]