1) Natural oak resources
天然栎类资源
2) Oak natural secondary forest
栎类天然次生林
1.
Study on the Quantitative Analysis of the Oak Natural Secondary Forest in Baotianman Nature Reserve;
宝天曼栎类天然次生林林分结构量化分析
2.
The Oak natural secondary forest in Baotianman National-level Nature Reserve is taken as the researching object,according to the survey materials of 32 samples,the structure characteristic,species diversity of Oa
选择宝天曼国家级自然保护区栎类天然次生林作为研究对象,根据32块样地的调查资料,详细的研究和分析了栎类天然次生林群落的结构特征、物种多样性,在此基础上,用稳定度指数法和主成分分析法分别分析和评价了栎类天然次生林的群落稳定性,最后根据研究结果针对该保护区的现状提出建议。
3.
Based on the 2×2 contingency table,association coefficient(AC) together with percentage co-occurrence(PC) and point correlation coefficient(φ)as well as Ka-Fang worth difference,the join relations of 26 major trees populations of in oak natural secondary forest are measured.
在对宝天曼地区乔木层树种的RA、RD、RF及IV分析的基础上,根据2×2联列表,运用联结系数、共同出现百分率、点相关系数以及卡方值分别测定了栎类天然次生林26个主要树木种群间的联结关系。
3) natural resources
天然资源
1.
Protection and development of natural resources in Changbai Mountain;
长白山区天然资源保护与开发研究动态
2.
The reasonable makes use of the natural resources;5.
1、从能源实际出发,制定合理的空调标准;2、实行变风量调节;3、使用回风、控制送风机器露点;4、合理利用天然资源;5、有效地控制水泵的耗电;6、加强空调设备的技术改造。
3.
The investigation was conducted on natural resources of bracken fern in Gansu province during 2005～2006,the results showed that there were 4 species of edible natural bracken fern in whole province,holding a total area of 368 700 hectares,which concentrated distribution in natural forest region of the centre south;annual output was 1150.
2005～2006年对甘肃的蕨菜天然资源进行了调查,结果表明,全省食用类天然蕨菜有4种,面积36。
5) Natural gas resource
天然气资源
1.
To research the world\'s natural gas exploration will optimize the natural gas resources utilization, and improve the effects of exploration.
通过对世界天然气资源勘探现状研究,实现天然气资源优化利用,改善勘探效果,必将为全球天然气资源的高水平、高效益勘探开发和可持续发展提供理论及实践依据。
补充资料：药用植物资源(见天然药物资源、中国药用植物分布)
药用植物资源(见天然药物资源、中国药用植物分布)
medicinal plant resources
YaOYong zh一wu ziyuon药用植物资源(medicinal Plant resouoes)见天然药物资源、中国药用植物分布。
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