On the basis of observed records of yearly snow cover depth, monthly average temperature and monthly total precipitation in Sidalong forests of Qilian Mountains, the variation trends in the snow cover depth, cold season precipitation and cold season temperature are studied.
根据位于祁连山 (中山带 )寺大隆林区祁连山水源涵养林研究院森林生态系统定位研究站近 2 2年来的年最大雪深、月平均气温、月降水量观测记录 ,用平均差值法、最小二乘法、自回归滑动平均法检验了祁连山寺大隆林区积雪、冷季降水、冷季平均气温的变化趋势 ,结果表明 :祁连山寺大隆林区积雪呈增加趋势 ,近 2 2年来年平均增加 1 。
The flora of seed plants in Dawopu forest zone is one part of North China, it has 73 families, 242 genera and 390 species.
为了摸清大窝铺林区植物资源本底 ,了解该区种子植物区系的性质和特点 ,通过对科的地理成分特点和属的分布区类型分析 ,以及该区与河北其他地区植物区系的比较 ,确认大窝铺林区种子植物区系是华北植物区系的一部分 ,有种子植物 73科、 2 4 2属、 390种。
System of Wood Cutting and Transport within the Limits of Large Forest Zone;
关于大林区林木采伐运输体系的探讨
The forest fire ravaged many miles of country.
森林大火毁坏了许多英里的林区。
Construction of “two systems” in the east forest coreas of Daxin an mountains;
谈大兴安岭东部林区“两大体系”建设
Rehabilitation and Degradation for Subalpine Coniferous Forest on the Upper Reaches of Dadu River of Eastern Tibetan Plateau
大渡河上游林区森林资源退化及其恢复与重建
The Relationship between Growth and Stand Density of the Artificial Forest of Pinus Tabulaeformis in Daqing Mountains;
大青山区油松人工林生长与林分密度关系研究
Discuss on Forest Resources Sustainable Management in Daxing an Mountains Forest Region of Inner Mongolia;
内蒙古大兴安岭林区森林资源可持续经营探讨
Research of Forest Developing pattern of National Forest Industry Region in Great Xing’An Mountains;
大兴安岭国有森工林区林业发展格局研究
The Strategy of Developing Forest-under-economy in Daxinganling Forest Region;
大兴安岭林区发展林下经济的对策建议
A study on ecological effect of landscape plant in Qianwei campus of Jilin University;
吉林大学前卫南校区园林植物生态效益的研究
Forestry in Canada and Its Implication for the ecosystem construction in Bijie Prefecture;
加拿大林业对毕节试验区林业生态建设的启示
Study of the eclolgical forestry in the eartern Daxing anling forect region;
大兴安岭东部林区生态林业建设的探讨
Discussion on Developing Non-national Forestry in Daxing'anling Mountain Region of Inner Mongolia
内蒙古大兴安岭林区发展非公有制林业探讨
Study on Soil Organic Carbon Density of Main Plantations in the Dabashan Forest Areas
大巴山林区主要人工林土壤有机碳密度的研究
The Survey on Forest Diseases in the Daxing'anling of Heilongjiang Province
黑龙江省大兴安岭林区森林病害的初步调查
The areas of greater rainfall conform roughly with these forested areas.
降雨量较大地区大致与这些森林地区相符合。
add forest protection facilities and enhance forest protection in light of actual needs;
根据实际需要在大面积林区增加护林设施，加强森林保护；
Effects of Fire Severity on Forest Communities in the Northern Great Xing an Mountains;
大兴安岭北部林区林火干扰强度对森林群落影响研究
A large part of Africa is made up of thick forest.
非洲的大部分地区都是密林。