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
蒋俊明,刀丽萍,彭建勇,李恒,肖恩
JIANG Jun-ming~1 DAO Li-ping~2 PENG Jian-yong~2 LI Heng~2 XIAO En~2 (1.Sichuan Academy of Forestry,Chengdu 610082, 2.Forestry Institute d Panzhihua City,Panzhihua 617002,China)
摘要(Abstract):
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,具有极大的实用价值
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,cover- ing grass and using hydrogel;The results have shown as follows:(1)Using hydrogel will obviously in- crease 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 pat- terns 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 quasi- drought regions.
关键词(KeyWords):
干热河谷;土壤水分;造林措施
Dry-hot valleys;Soil water;Methods of forestation
基金项目(Foundation): 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
作者(Author):
蒋俊明,刀丽萍,彭建勇,李恒,肖恩
JIANG Jun-ming~1 DAO Li-ping~2 PENG Jian-yong~2 LI Heng~2 XIAO En~2 (1.Sichuan Academy of Forestry,Chengdu 610082, 2.Forestry Institute d Panzhihua City,Panzhihua 617002,China)
DOI: 10.16779/j.cnki.1003-5508.2007.03.004
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- 蒋俊明
- 刀丽萍
- 彭建勇
- 李恒
- 肖恩
JIANG Jun-ming~1 DAO Li-ping~2 PENG Jian-yong~2 LI Heng~2 XIAO En~2 (1.Sichuan Academy of Forestry - Chengdu 610082
- 2.Forestry Institute d Panzhihua City
- Panzhihua 617002
- China)
- 蒋俊明
- 刀丽萍
- 彭建勇
- 李恒
- 肖恩
JIANG Jun-ming~1 DAO Li-ping~2 PENG Jian-yong~2 LI Heng~2 XIAO En~2 (1.Sichuan Academy of Forestry - Chengdu 610082
- 2.Forestry Institute d Panzhihua City
- Panzhihua 617002
- China)