采用单因素参数敏感性分析方法，研究了林草系统水量平衡的的参数敏感性。
The sensitivity of parameters on water budget in different forest and grass ecosystems were studied using single-dimensional sensitivity analysis.
湖州市四种农田生态系统中，以林草系统最稳定，而桑园系统最容易发生土壤微量元素的缺乏状况。
In the four agricultural ecosystem of Huzhou City the forest-grass ecosystem was the most stable and the Mulberry ecosystem easiest to suffer the lack of the trace elements.
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.
对祁连山排露沟林草复合流域土壤水分状况进行了系统研究。
The paper studied the soil water status in Pailugou forest and grass complex watershed in Qilian Mountains.
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.
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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