... 美国森林协会 american forest institute 中国森林病虫 forest pest and disease 联合国森林理事会 united nations council on forests ...
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forest pest and disease control 森林病虫害防治
forest pest and disease monitoring 森林病虫害监测
forest disease and pest 森林病虫害
It also shows low unit stock volume, unreasonable forest age structure, low forestland use ratio and severe pest, disease and rat disaster.
该流域森林资源有限且分布不均；单位蓄积量低，林龄结构不合理；林地利用率不高，病虫鼠害严重。
Forest insect pest and disease is one of the main factors influencing forest health.
森林病虫害是影响森林健康的主要因素之一。
According to analysis of the reason, condition and character of forest disease and insect pest in Pingxiang City, the author put forward effective prevention and control countermeasures.
针对萍乡森林病虫害发生情况、特点及成因分析，提出有效控制防治对策。
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