The first analysis of the ecological environment on the impact of pest pika for future forestry pest pika integrated management laid the theoretical foundation.
首次研究分析了生态环境对病虫鼠兔的影响，为今后林业病虫鼠兔综合管理奠定了理论基础。
Through the above analysis, we draw a conclusion that the lower income of herdsmen has a direct relation with the adverse ecological environment in the grassland.
通过分析得出的结论是牧民减收与草原生态环境的恶化有直接的关系。
Chapter one is the analysis of ecological environment and historical background.
第一章为生态环境与历史背景分析。
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