摘要
采用定位观测和抽样调查方法，对大兴安岭水湿地改造前后的土壤理化性质、植物群落特征进行了系统调查。通过分析发现，经改造后的水湿地土壤主要理化性质及肥力的变化均利于落叶松生长；植物群落种数呈现增加、减少、再增加的变化规律，造林１０ａ后，草本植物大量减少，乔、灌木少量增加，植物群落向以落叶松为主的森林群落发展。这种变化对当前本地区经济发展有积极的一面，但却对区域生物多样性及生态环境产生不利影响。因此，对大兴安岭水湿地应以保护和保护性利用为主。
The physico-chemical properties of the soils and characteristics of the plant communities in fen lands of Daxing'an Mountains were systematically investigated and analyzed through fixedposition observation and sample investigations The soil of fen land had changes in physico-chemical properties and fertility after being transformed Those changes are suitable for plant growth Species number in community varies as increase→decrease→increase pattern Herbs greatly decrease after ten years of afforestation, but trees and shrubs has a little increase Plant communities are developing toward the forest community dominant by larch These changes of fen lands are advantageous to present local economy, but disadvantageous to regional biolgical diversity and ecological environment So protection and protective use should be main measures for the fen lands in Daxing'an Mountains and large-scale transformation and afforestation are not reasonable
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第6期9-13,共5页
Journal of Northeast Forestry University
基金
林业部92-95重点研究课题
关键词
大兴安岭
水湿地
改造
土壤
植被
Daxing'an Mountains
Fen land
Ecological environment
Change regulation
Soil properties
Transformation
