喀斯特露石和碎石对植被修复的影响评价  

AN EVALUATION ON IMPACTS OF THE OUTCROPS AND ROCK FRAGMENTS ACTION TO VEGETATION RECOVERY IN KARST AREA

作　　者：刘娟 赵高卷 李振江 沈有信[1] LIU Juan;ZHAO Gao-juan;LI Zheng-jiang;SHEN You-xin(CAS Key Laboratory of Tropical Forest Ecolongy,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Kunming 650000,Yunnan,China;University of Chines,Academy of Sciences,Beijing 10049,China)

机构地区：[1]中国科学院西双版纳热带植物园热带森林生态学重点实验室,云南昆明650223 [2]中国科学院大学,北京100049

出　　处：《云南地理环境研究》2018年第5期8-14,共7页Yunnan Geographic Environment Research

基　　金：国家重点研发专项课题(2016YFC0502504);国家自然科学基金项目(41671031)

摘　　要：通过实地取样测量了云南省南部3类喀斯特生态系统中露石、碎石和植物指标,拟揭示不同露石比例和碎石含量对植物的影响。结果表明,露石覆盖面积占比和土内碎石含量的差异对植物群落组织结构和生物量影响有限。相较于土内碎石含量,露石覆盖面积占比对物种分布的影响更显著,其中草本适应高露石覆盖面积的环境,而该环境中乔灌木物种分布则较少。在土内碎石含量低于25%岩溶迹地上,碎石含量对所支撑的植物群落影响有限,地表露石出露面积低于30%时对乔灌草物种区域分布产生影响。On analysis of measurement in situ,we studied the changes of exposed outcrops,rock fragments factors and plant factors in three karst ecosystems in Yunnan Province,China. Aims to reveal the effects of different ratios of outcrops cover and rock fragment content on plants. The results show ed that,the difference of outcrops coverage and the content of rock fragment in the topsoil had limited impact on the organizational structure and biomass of the plant community. Compared w ith the content of rock fragment in the topsoil,the proportion of the outcrops coverage w as more significant for the distribution of the species composition of plant communities in potential rocky desertification area. Among them,the herb adapt to a higher exposed outcrops area environment,and the distribution of shrub species w as less in this environment. In the case w here the content of rock fragment in the topsoil w as less than 25%,the effect on the plant community w as limited,and the exposed area of outcrops may affect the species spatial distribution in the habitat w here the exposed area w as less than 30%.

关 键 词：喀斯特 露石和碎石 植被修复 

分 类 号：Q948[生物学—植物学]