文章分析了蜚克图河流域工程建设、林草植被破坏、 土壤侵蚀、 水质污染、超负荷用水等使流域生态系统面临的威胁。
The paper analyses the stress faced by the ecological system of Feiketu river basin due to project construction, vegetation damage, soil erosion, water pollution and overburden water use.
概述了林草复合生态系统对林木和土壤的影响及林草复合的生态效益和经济效益。
This paper summarized the effects of tree-grass complex system on trees and soil and its ecological and economic benefits.
承德坝上地区，属寒温带半湿润草原季风气候，森林草原生态系统脆弱，自我恢复能力较差。
The climate in upper dam region of Chengde prefecture is that of frigid temperate zone, semi damp grass land and monsoon.
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