红壤侵蚀地不同植被恢复模式“土壤水库”特征研究  

Study on characteristics of “soil reservoir”in different vegetation restoration patterns in eroded red soil

作　　者：朱丽琴[1] 黄荣珍[1] 易志强[1] 黄诗华[1] 贾龙[1] 王赫[1] 刘勇[1] 

机构地区：[1]南昌工程学院江西省退化生态系统修复与流域生态水文重点实验室,江西南昌330099

出　　处：《南昌工程学院学报》2016年第6期29-34,共6页Journal of Nanchang Institute of Technology

基　　金：国家自然科学基金资助项目(31160179);江西省自然科学基金资助项目(20151BAB204033);江西省水利厅科技项目(KT201546);江西省高等学校"十二五"重点学科培育基金资助项目

摘　　要：采用野外调查与室内分析相结合的方法,研究了南方红壤侵蚀地经过30a植被恢复后,马尾松林、木荷×马尾松混交林、阔叶林3种典型恢复模式土壤水库的库容特征。结果表明,各植被恢复模式土壤水库库容组成均以兴利库容占总库容的比例最高,为63.47%~70.09%;随着土层深度的增加,总库容、兴利库容和最大有效库容均呈下降趋势,下降幅度分别为1.10%~11.17%、11.92%~24.63%和6.19%~24.61%,且3种库容均以马尾松林土壤下降幅度最小;而死库容随土层深度的增加呈上升趋势,防洪库容则变化趋势不明显。综合各项库容指标,保留密度大、灌木层盖度高的马尾松林土壤水库的贮水能力暂时表现略强。The characteristic of soil reservoir capacity was examined under three typical patterns in southern eroded red soil after 30 years of vegetation restoration,i. e. Pinus massoniana forest,Schima superba-Pinus massoniana mixed forest and broad-leaved forest,based on field investigations and laboratory assay. The results showed that： utilizable capacity accounted for the highest proportion of the total capacity of soil reservoir among the three models,which ranged from 63. 47% to70. 09%. With the increase of soil depth,the total capacity,utilizable capacity and maximum effective capacity took a downward trend,the decrease ranges were 1. 10% ~ 11. 17%,11. 92% ~ 24. 63% and 6. 19% ~ 24. 61%,respectively,and the decrease in Pinus massoniana forest was the minimum. The dead capacity appeared a rising trend with the increase of soil depth,while the trend of flood control capacity varied erratically. Under the comprehensive capacity index of soil reservoir,the water storage capacity in Pinus massoniana forest which had high reserved density and high shrub coverage was temporarily slightly stronger.

关 键 词：植被恢复模式 土壤水库 库容 红壤 

分 类 号：S152.7[农业科学—土壤学]