运用生态系统健康理论建立了城市森林健康评价指标体系，对延安市不同类型城市森林进行了分析评价。
Based on the theory of ecosystem health, healthy condition of urban forest ecosystem in Yan 'an was analyzed and assessed by setting diagnostic indicator system.
小龙门林场及毗邻地区的天然植被保存良好，结构合理、物种丰富，在进行森林健康评价时，可作为健康标准的参考之一。
Natural vegetation in Xiaolongmen and adjacent areas can be used as the reference standard of health assessment for they are preserved well, have rational structure and rich species.
所以，开展城市森林健康分析与评价有着非常重要的社会意义。
So, it has a very important social significance in carrying out the analysis and evaluation of urban forest health.
森林生态系统健康是保证生态系统服务功能的前提，森林生态系统健康评价方法及指标体系已成为森林生态系统健康研究的核心内容。
Ecosystem health is a prerequisite to the service function of ecosystem. Assessment and indicator system has become the key issues in the research on ecosystem health.
森林生态系统健康是保证生态系统服务功能的前提，森林生态系统健康评价方法及指标体系已成为森林生态系统健康研究的核心内容。
Ecosystem health is a prerequisite to the service function of ecosystem. Assessment and indicator system has become the key issues in the research on ecosystem health.
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