1) Natural hardwood forests
天然三大硬阔林
2) three-hardwood forest
三大硬阔林
1.
The biocycling of 9 nutrient elements of three-hardwood forest for 47a in the NortheastZhangguangchai Mountains(at 129°0 129°2 E,45°20 45°7 N)were measured by thestudy on biomass and net primary productivity of the forest.
张广才岭４７年生三大硬阔林９种营养元素的总积累量（ｋｇ／ｈａ）是２２３６。
3) natural broad-leaved forest
天然阔叶林
1.
The base for collecting seeds of natural broad-leaved forest is established in the experimental zone of Huangsang nature reserve,with the area of 733.
在国家级黄桑自然保护区的实验区建立天然阔叶林采种基地,基地面积733。
2.
The chemical property changes of natural and artificial regeneration soils were studied after the natural broad-leaved forest was cut and burn two years later.
通过研究天然阔叶林砍伐后炼山，不同更新方式土壤化学性质的变化，结果表明：人工更新和天然更新２年后与原始林地在０～２０ｃｍ和２０～４０ｃｍ土层中相比都对土壤养分有影响，尤其土壤有机质、全氮、水解性氮和速效磷都下降，速效钾却增加，人工更新比天然更新对保持土壤肥力作用更大。
4) natural broad leaved forest
天然阔叶林
1.
In order to provide the basic foundation of sustainable management practice of natural broad leaved forest in Fujian province, the basis of working group organization, the relation between every organizational basis, the organizing and naming of working group and the main points of management systems in every working group of natural broad leaved forest in Fujian province was studied in the pape
对福建天然阔叶林经营类型的组织依据、各组织依据之间的关系、各经营类型的组织及命名和各经营类型的经营措施体系要点进行探讨 ,为福建天然阔叶林可持续经营的实践提供基础依
2.
In order to provide the basis of the sustainable management of natural broad leaved forest in the mid subtropical zone, a brief review on the function and management techniques of the natural broad leaved forest in the mid subtropical zone is taken in this paper.
本文对中亚热带天然阔叶林生态功能和经营技术研究进行综述，旨在为中亚热带天然阔叶林可持续经营提供基础依据。
5) natural evergreen broad-leaved forest
天然常绿阔叶林
1.
Soil carbon pool and fertility under natural evergreen broad-leaved forest and its artificial regeneration forests in Southern Sichuan Province;
川南天然常绿阔叶林人工更新后土壤碳库与肥力的变化
6) natural mixed stand of conifer and broad-leaved trees
天然针阔混交林
1.
The soil physic-chemical properties of natural mixed stand of conifer and broad-leaved trees in different cutting operation site after 10 years(high intensity,45.
定量分析天然针阔混交林强度择伐、极强度择伐和皆伐10 a后林地土壤理化性质的动态变化,旨在揭示森林土壤采伐前后的养分演变规律,对于减少采伐作业对林地土壤的干扰具有重要意义,同时也为合理选择主伐方式,建立针阔混交林生态采运理论提供科学依据。
2.
The dynamics effects of cutting intensity on the tree layer species composition and diversity of natural mixed stand of conifer and broad-leaved trees (low intensity,13.
1%和皆伐)作业对天然针阔混交林乔木层树种组成及物种多样性的动态影响。
补充资料：常绿阔叶落叶阔叶混交林
出现于亚热带和暖温带的过渡带或亚热带山地常绿阔叶林上界的森林植被类型。由常绿阔叶树和落叶阔叶树混合组成。
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