基因改良亦是提高森林生产力的一种手段，例如确保集约管理的森林提供高木材产量。
Genetic improvement is also a means to improve forest productivity, for example to ensure a high wood production in intensively managed forests.
森林生产力是森林生态系统中作为第一性生产者植物群落结构与功能的综合体现。
As the primary producer of forest ecosystems the forest productivity reflects the structure and function of plant community synthetically.
在暖温带上，林分因子和环境因子共同解释的森林生产力变化的能力最强，可达31.9%。
The model for warm temperate zone has the strongest explaining capacity, which can account for 31.9% of the variance of forest procucti vity. 4.
划分森林立地类型，综合评价林地质量，是适地适树，科学地进行营造林和预测森林生产力的基础。
Dividing the forest site type, comprehensive appraisal the quality of forest land are the bases to match species with the site, scientifically mange and afforest and predict productivity.
长期影响主要是由树种组成的变化以及随之而来的森林结构、生产力和养分吸收的变化所导致的。
Long-term effects are primarily mediated by changes in tree species composition and the consequent alterations of forest structure, productivity, and nutrient uptake.
气候变化正在加速造成对生态系统、农业生产力、森林和供水系统不可弥补的损害；
The irreparable damage that is being inflicted on ecosystems, agricultural productivity, forests and water systems is accelerating.
当但森林的雨淋到尾巴并不意味着必然死亡，它还意味着损失生产力。
While hitting bottom in the rainforest doesn't mean certain death, it still means a loss in productivity.
抚育间伐对森林生长的影响体现在很多方面，包括对林分生产力及其林分因子、林下植被及灌木、林下土壤和天然更新影响等方面。
The effects of thinning on forest growth embodied some aspects which mostly include the effects on stand productivity, stand factors, stand biomass, vegetation and shrubs under-forest, soil and so on.
其配套措施的实施，有利于林地生产力的提高，也将提高森林经理工作水平。
So the matched measures were put in practice in favor of enhancement of forest productivity and forest management level.
森林层次结构较为完整，乔、灌、草各层次间分化清晰：(5)植物群落分布的连续性明显及群落生产力水平低等群落特征。
Comparatively intact forest layer, the clear layer of the arbores, thicket and vert. (5) Obvious continuity of vegetation community's distribution and poor productivity of community.
不合理的土地利用方式和对森林的不合理砍伐导致脆弱的土壤系统和森林生态系统的严重退化、生产力下降和严重的水土流失。
Irrational land use and forest cutting have resulted in the serious degradation, the decrease of land productivity and the water and soil erosion in the fragile soil system and forest system.
对影响森林植被净第一性生产力的主要因子进行敏感性分析是准确估计NPP的需要。
The sensitivity analysis of primary factors affecting the forest Net primary Productivity (NPP) is important to estimate NPP accurately.
土壤有机质为森林生态系统生产力构成的重要部分，是森林生态系统生物循环中的重要环节之一。
Soil organic matter is a very important part of forest ecosystem productivity, and is also a very important tache of biological cycling in forest ecosystem.
阐述了维护、恢复森林土壤功能，合理地利用森林土壤资源，提高森林土壤生产力的途径。
This article also reviews the ways by which the maintainance and restoration of forest soil function and the reasonable utilization and fertility increment can be achieved.
近年来城市森林人为活动频繁，对林地土壤造成不同程度的压实，从而影响林分生产力及森林土壤碳平衡。
Different degrees of soil compaction were caused by frequently human activities in urban forest in recent years, and thus affected forest productivity and soil carbon balance.
利用森林蓄积量推算森林生物量和净生产量的方法，系统研究了我国森林植被的生物生产力。
Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed.
利用森林蓄积量推算森林生物量和净生产量的方法，系统研究了我国森林植被的生物生产力。
Method for estimating biomass and net production of forest vegetation from stem volume of stand was proposed in this paper, and biological production all over China was estimated by using this methed.
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