红壤坡地生态系统恢复过程植被群落的演变  

Observation on plant succession in the process of ecosystem recuperating on the slop lands of red soil

作　　者：胡实[1,2] 谢小立[1] 王凯荣[1] 李裕元[1] 

机构地区：[1]中国科学院亚热带农业生态研究所,湖南长沙410125 [2]青岛农业大学农业生态与环境健康研究所,山东青岛266109

出　　处：《生态环境》2008年第1期327-333,共7页Ecology and Environmnet

基　　金：中国科学院知识创新工程(KZCX3-SW-441)

摘　　要：应用样方调查方法,对湘北红壤坡地有人为干扰和无人为干扰两种方式下植被恢复情况进行了初步调查分析,结果表明:无人为干扰的坡地植被恢复在11年间经历了缓慢恢复和快速恢复两个阶段,不同坡位群落生物量稳步增长,正在逐步形成具有稳定群落结构的自然生态系统;人为干扰坡地植被恢复缓慢,由于水土流失,上坡位地下部生物量呈下降趋势,中坡位和下坡位地下部的生物量都大幅度的增加,此外人为干扰使得乔木类植物无法正常生长,从而不能形成具有明显垂直结构的稳定生态系统。Based on the sample plot method, the process of ecosystem recuperating was observed and analyzed in two kinds of farming lands （within human impact and without human impact） in red soil region. The result show that without human impact there were two stages- slow recuperating stage and rapid recuperating stage in the naturally recuperating courses, biomass production increased steady in both stages and the natural ecosystem system with the stable community was evolving step by step. The process of naturally recuperating in the farming land with human impact was very slow, because of the soil losing, biomass reduced in the high level of the slope and increased both in the middle and low levels of the slope. Under human impact the trees couldn＇t grow tall and the natural ecosystem system with the stable community couldn＇t be established.

关 键 词：红壤丘陵区 自然恢复 人为扰动 

分 类 号：Q948[生物学—植物学]