2) Sino-US forest health program
中美合作森林健康项目
3) Forest health
森林健康
1.
Forest health ecological risk assessment in China;
中国森林健康生态风险评价
2.
Biological and ecological bases of using insect as a bio-indicator to asses forest health;
以昆虫作为指示生物评估森林健康的生物学与生态学基础
3.
Forest health and scientific prevention and control of forest diseases and pests;
森林健康与森林病虫害科学防控的浅析
4) Sub-healthy forests
森林亚健康
5) Forest health assessment
森林健康评价
1.
Based on the methods combining qualitative analysis with quantitative analysis,the forest health assessment indicator system is established by using SPSS16.
0数学统计软件,采用定性与定量相结合的方法确定森林健康评价指标体系,包括结构性指标、功能性指标和适应性指标3大类8个指标,使用层次分析法赋予指标权重,基于ArcGIS9。
2.
For forest health assessment at the current stage in China,the issues such as establishing evaluation index system for the static evaluation,as well as lacking spatial information data and dynamic change model for forest health operation were existed.
应用动态模型评价森林健康状况,预测树木或林分的生长与收获,以及在不同立地条件下采用某些特定的营林技术措施后林分的动态变化,一直是森林健康评价及管理的核心问题。
补充资料：森林资源(见世界森林资源、中国森林资源)
森林资源(见世界森林资源、中国森林资源)
forest resources
sen Iin ziyuon森林资源(forest resources)见世界森林资源、中国森林资源。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条