摘要
基于对和田绿洲不同结构防护林土壤理化性质的测定结果,分析了不同结构防护林土壤水分的分布特征,并讨论了土壤水分与土壤理化性质之间的关系。结果表明,防护林土壤水分具有规律性分布特征,即从防护林西南方向到东北方向,土壤的相对含水率呈增大趋势,且不同结构防护林土壤相对含水率大小各异。防护林土壤水分与土壤热容量呈显著的线性(R2=0.990 3)正相关,与土壤全盐含量呈一定的梯度分布。不同结构防护林土壤水溶性盐分的空间变化明显,防护林土壤有一定的积盐特征,土壤全盐含量已从2008年的0.444 g.kg-1变为2009年的10.332 g.kg-1。
Based on the determination results of soil physical chemical properties of shelterbelt with different structures in Hetian Oasis,the distribution characters of soil moisture were analyzed.Meanwhile,the relationship between soil moisture soil physical chemical properties was discussed.Result shows that regular distribution of soil moisture appeared in shelterbelt.From the southwest to the northeast,the trend of soil relative water content is increasing.Soil relative water content of shelterbelt with different structures is different.A linear positive correlation between soil moisture and soil thermal capacity is existed,and the linear correlation coefficient is 0.990 3.Also,the soil moisture and the soil total salt had the characteristic rule of gradient distribution.The water-soluble salt＇s spatial variation of soil is obvious shelterbelt with different structures.The soil of shelterbelt has certain characteristics of salt accumulation.The soil salinity of shelterbelt has changed from 0.444 g·kg-1 in 2008 to 10.332 g·kg-1 in 2009.
出处
《防护林科技》
2010年第5期1-4,共4页
Protection Forest Science and Technology
基金
国家科技支撑项目(2006BAD26B0902)
国家重点基础研究发展规划(2006CB705809)
中国科学院知识创新重大项目(KSCX-YW-09)
国家气象局软科学项目(QR2008-39)
NUIST科研基金(20070105)
关键词
绿洲防护林
土壤水分
热容量
动态特征
oasis shelterbelt
soil moisture
thermal capacity
dynamics characteristics
