摘要
利用时空互代法调查了延安试区南、北 25个固定标准地植被恢复状况,测定了不同群落土壤水分和容重,探讨了在植被恢复过程中群落与其环境因子的耦合关系。结果表明,随着植被的逐步恢复,表层土壤容重减小;从草本群落到乔木林,灌丛群落 5m内土壤含水量最低,乔木林土壤含水量提高。
The restoration of vegetation was investigated, soil water and soil bulk density was measured and observed by using spatio-temporal substitution method in 25 sampling plots in Yan'an experimental region. At the same time, coupling relationship between environmental elements and plant communities during vegetation restoration was studied. The results indicate that the bulk density of top soil gradually decreases, and the soil water content is lowest under the surface in shrub community 5 m away from herbaceous community, but increases within tree community.
出处
《西北林学院学报》
CSCD
北大核心
2005年第1期1-5,共5页
Journal of Northwest Forestry University
基金
中国科学院知识创新西部行动项目(KZCX1 6 03)
西北农林科技大学重点项目
关键词
植被恢复
群落演替
土壤水分
vegetation
community succession
soil water
