摘要
通过对贵州茂兰森林区岩溶作用下森林生态特点的研究表明 ,岩溶山区由于岩溶作用导致了地貌、土壤、水分等状况的特异性 ,其森林生态系统行为对岩溶作用也作出了相应的响应 ,如森林生态系统虽然生物多样性、物种的特有性仍然较好 ,但物种以钙生性、旱生性为主 ,生产力低下 ,森林生态系统主要通过诸如无性更新、不间断随时更新等方式来适应严酷的岩溶环境。因此要保持和恢复岩溶石山区森林生态系统生产力 ,其首要的基础研究问题是岩溶作用影响下森林植物的生境胁迫的机制及其动态 。
This paper describes the characteristics of Maolan karst ecosystem, in which karstification is a main factor affecting the landform, soil and water content etc., on the other hand, forest ecosystem also responses to karstification ,showing that species have some specialized characteristics such as calciphile and xerophilous in order to grow in karst environment, which determines low productivity although it exists more biodiversities and species. Forest ecosystem responses to severe conditions, which are the origin of ecosystem frailty in karst mountainous regions in particular ways such as clone regeneration, continuous regeneration, etc.. To maintain or restore the productivity of karst forest ecosystem, it is better at first to study the mechanism of environmental stress on forest species under karstification, especially to study the adaptability of forest species to this kind of stress and the mechanism of the genetic adjustment.
出处
《中国岩溶》
CAS
CSCD
2001年第1期47-52,共6页
Carsologica Sinica
基金
国家自然科学基金!(49972 0 87)资助
关键词
岩溶作用
森林生态系统生态响应
生境胁迫
调控机理
Karstification
Forest ecosystem
Environmental stress and adjustment
Eco response
