金沙江干热河谷造林措施对土壤水分的影响  

The Influences of Forestation Measures on Soil Water in the Dry-hot Valleys of the Jinsha River

作　　者：蒋俊明[1] 刀丽萍 彭建勇 李恒 肖恩 

机构地区：[1]四川省林业科学研究院,四川成都610081 [2]攀枝花市林业科学研究所,四川攀枝花617002

出　　处：《四川林业科技》2007年第3期19-22,共4页Journal of Sichuan Forestry Science and Technology

基　　金：国家十五攻关课题"中国森林生态网络体系攀枝花点的研究";国家林业局四川森林生态和资源环境实验室项目;攀枝花市"干热河谷保水保墒技术研究"项目资助

摘　　要：本文研究了干热河谷植被恢复中的造林措施对土壤水分水分的影响。以试验数据为基础,科学分析了挡水墙、覆膜、覆革和保水剂四种造林措施的优缺点,结果表明:(1)使用保水剂极为显著的提高了土壤水分含量;(2)挡水墙改善土壤水分能力较弱;(3)覆膜改变了土壤水分的分布格局;(4)覆革增加了水分下渗,改善了苗木根部的土壤水分。综合分析,保水剂和覆草能有效提高造林苗木土壤水分含量。This paper deals with the influences of forestation measures in the vegetation recovery on soil water content in the dry-hot valleys of the Jinsha River. On the basis of experimental results, an analysis is made of the characteristics of four forestation measures for water-barring wall, covering plastic film, covering grass and using hydrogel. The results have shown as follows ： （ 1 ） Using hydrogel will obviously increase the soil water content; （2） Water-barring wall has a relatively weak cability in improving the soil water content; （3）Covering plastic film on the soil surface of seedlings will change the distribution patterns of soil water; （4） Covering grass will increase the filtration of precipitation, and ameliorate the soil water content in the seedling root. Summarily, covering grass and using hydrogel are effective forestation measures, thus having great practical values in the plant restoration of dry-hot valleys, and dry and quasidrought regions.

关 键 词：干热河谷 土壤水分 造林措施 

分 类 号：S714[农业科学—林学]