Measuring the activities of soil enzymes in degraded forest ecosystem;

The stability, sustainability and integrity are forest ecosystem health assessment's objectives and criteria, and select a series of variables including forest ecosystem structure, organization, biodiversity, NPP, etc. as forest ecosystem health assessment indicators.

以森林生态系统的稳定性、可持续性和整合性为目标，提出了包括森林生态系统组成、结构、生物多样性、NPP等森林生态系统健康的评价指标体系；

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There are many uncertainties in the role of forest ecosystems in slowing down the increases of atmospheric carbon dioxide concentration and their responses to and feedbacks on the global change associated with the increasing CO_2 concentration in the atmosphere and the global increase in nitrogen deposition.

在大气CO2浓度升高和氮沉降增加等全球变化背景下，森林生态系统减缓CO2浓度升高的作用及其对全球变化的响应和反馈存在诸多不确定性。

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With the light-temperature model put forward by Guenther, isoprene emission from Chinese forest ecosystem was estimated.

本文应用Guenther的光温影响模型，对1993年中国森林生态系统的异戊二烯排放量进行了估算。

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Forest land had a larger DOM/ WEOM concentration than grassland and farmland, and the effects of land use changes on DOM/ WEOM mainly depended on the changed land use pattern.

森林生态系统DOM/WEOM含量要高于草地和耕地。土地利用方式变化对DOM的影响主要取决于改变后的土地利用方式。

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To model the carbon cycle and predict carbon source/ sink of forest ecosystems, we must first understand the relative contributions of root/ rhizosphere and microbial respirations to total soil respiration under elevated CO2 concentrations.

在大气CO2浓度升高的背景下，精确区分根呼吸与微生物呼吸是构建森林生态系统碳循环模型和预测森林生态系统碳源/汇关系所必需的。

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In ecological, the ecological service value of forest ecosystem is very strong in Baihe forestry bureau, in which the storage of CO2 may reach 214.7 × 105t and annual fixed CO2 may reach 6.6 × 105 t;

在生态方面，白河林业局森林生态系统的生态服务价值是很强的。其中，贮存CO2总量可达214.7×10~5吨，年固定CO2可达6.6×10~5吨；

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Estimation model and basic GIS database were connected and visible interface was developed by using the database and GIS programming language. The ecosystem service functions value and the amount of compensation fee were calculated in Tiantong.

运用数据库和GIS编程语言，将估算模型与基础GIS系统数据库连接并实现可视化界面，完成了对宁波天童森林生态系统服务功能价值及补偿量的计算。

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The temperature sensitivity of soil CO2 efflux in forest ecosystem in China, Q10 value, was estimated. It was 1.5 and much lower than the global averaged value, 2.0.

作为衡量土壤CO2释放对温度敏感性的重要指标，计算了我国森林生态系统土壤CO2释放温度敏感性系数-Q10值，约为1.5，该值显著低于全球平均水平，2.0。

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Accurate estimation of below-canopy CO2 flux ( Fcb) in typical forest ecosystems is of great importance to validate terrestrial carbon balance models.

精确估算典型森林生态系统冠层下方CO2通量（Fcb）对验证陆地生态系统碳平衡模型具有重要意义。

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The quantity of CO2 absorbed by forest ecosystems all over China was estimated; CO2 emissions due to fossil fuel consumption for the whole country also were appraised.

定量分析了森林生态系统对CO2的吸收作用，并估算了化石燃料CO2释放量。

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In addition, through exerting C source ( cane sugar) and N source ( NH4NO3) to artificial disturbance forest, we studied forest ecosystem C and N dynamic change regularity.

另外，通过对林地人为施加C源（蔗糖）和N源（硝酸铵）来进行干扰，对森林生态系统的C、N动态变化规律进行定位跟踪研究。

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In forest ecosystems, Carbon and nutrient allocated to soil by fine root turnover ( formation, senescence, death and decomposition) is an important component of the carbon and nutrient budget.

在森林生态系统中，通过细根的形成、衰老、死亡、分解（即细根周转），向地下部分和土壤中分配的C和养分被认为是陆地C循环和营养循环的重要组成部分。

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Research Progress in the Plant Heavy Metal ( Cu 、 Zn 、 Cd) Pollution of Forestry Ecological System

森林生态系统植物重金属（Cu、Zn、Cd）污染研究进展

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Fine root turnover is a major pathway for carbon and nutrient cycling in terrestrial ecosystems and may be sensitive to many global change factors.

树木细根的生产和周转对森林生态系统C和养分循环具有重要影响。

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Therefore research on the effects of soil fauna on fine root eco-physiological processes is important in understanding C and nutrient cycling in forest ecosystems.

因此，研究土壤动物对细根生理生态过程的影响对于认识森林生态系统C和养分循环具有重要意义。

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Evaluating the potential of nitrogen fixing of plants in the forest ecosystem by using natural~ ( 15) n abundance method

利用~（15）N天然丰度法评估森林生态系统植物的固氮能力

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Urban forest ecosystem can regulate matter circulation, energy equilibrium and particularly control excessive release of carbon and alleviate the environmental pollution.

认为城市森林生态系统能有效调节城市生态物流、能流平衡，特别能实现有效控制C过量排放（人均森林面积至少要达到9m2），控制环境污染；

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Soil CO_2 efflux of forest ecosystem in China: distribution and controlling factors

中国森林生态系统土壤CO2释放分布规律及其影响因素

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Methods and Progress of Research on CO_ 2 Flux of Forest Ecosystem

森林生态系统CO2通量研究方法与进展

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In some areas, nitrogen deposition has exceeded the N requirement by forest ecosystem.

在一些地区，大气N沉降超过了森林生态系统的N需求。

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