2) Forest degradation
森林退化
1.
As one of the most critical environmental problems in the 21st century, forest degradation has been facing worldwide.
森林退化可以理解为森林面积减少、结构丧失、质量降低、功能下降;森林衰退则是森林退化的一种形式,指森林(树木)在生长发育过程中出现的生理机能下降、生长发育滞缓、生产力降低甚至死亡,以及地力衰退等状态。
2.
Forest degradation,forest management,devegetation and revegetation are several additional direct human\|induced activities under the Kyoto Protocol 3 4 Their definitions are closely connected to the carbon accounting methodologies and the greenhouse gases (GHGs) emissions and removals of these activities,for which they are the key issues concerned by IPCC and UNFCCC.
森林退化、森林管理、植被破坏和恢复是涉及《京都议定书》第 3条第 4款 (3。
3.
The change of soil enzyme activity and relationship between enzyme activity and soil nutrient content during the process of forest degradation were studied to provide the theoretical basis for revegetation in Karst region with the frail ecosystem.
为给喀斯特环境脆弱生态系统的植被恢复提供理论依据,对贵州中部喀斯特森林退化过程中土壤酶活性的变化及其与土壤养分含量的相关关系进行了研究。
3) Degraded karst forest
退化喀斯特森林
1.
The 25 plots of degraded karst forests were chosen as the research objects and 25 plots were divided into 11 forest types by principal component analysis(PCA).
用25个退化喀斯特森林样地作为研究对象,采用主分量分析方法,把25个样地划分成11个森林类型,并对各类型的分布及特征进行阐述。
2.
The changes of SMBC and qSMBC of different soil layer,different microhabitats and rhizosphere,non-rhizosphere were studied during the process of degraded karst forest restoration by using the methods of microbial incubation and the chloroform fumigation-direct extraction.
采用微生物培养法及氯仿熏蒸法分析了退化喀斯特森林恢复过程中不同层次、不同生境、根际和非根际土壤中土壤微生物生物量碳(soil microbial biomassC,SMBC)及微生物熵(qSMBC)的变化特征。
4) degraded karst forests
退化喀斯特森林
1.
Number classification of degraded Karst forests in the central Guizhou;
黔中退化喀斯特森林植物群落的数量分类
2.
Based on the principles of restoration ecology and similarity,all species of successional stages in the natural restoration process of degraded karst forests were divided into five groups of adaptation grade.
根据恢复生态学原理和相似学原理,将退化喀斯特森林演替系列各群落中所有的种划分为5个适应等级种组,并把自然恢复演替过程划分为6个演替阶段。
6) forest decline
森林衰退
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