查询词典 ecosystem

Forest ecosystem ; Forest ecosystem service ; Assessment index system ; Value assessment

森林生态系统；服务功能；评价指标体系；价值评估

Assessment on the frangibility of ecosystem plays an important role in ecosystem management.

生态系统的脆弱性评价对于生态系统管理具有重要作用。

Aquatic ecosystem is the important habitat of biology, gestate abundant biologic resource and make up of the stucture of community.It keep balance of the ecosystem through the nutrients cycle and energy flow.

水生态系统是重要的生物资源栖息地，孕育着丰富的生物资源，构成了生态系统结构，通过与环境进行物质循环和能量流动等功能，维持着水生态系统平衡。

The problem would be generalized in view of the gyre ecosystem to judge the micro ecosystem for the deep lake eutrophication.

对于以涡流生态系统的见解判断微生态系统的深水湖富营养化问题将给予概括。

Dissolved oxygen in water is important to maintain sea ecosystem, and "organism hungriness" will appear in some sea area if hypoxia occurs in estuaries. It is very harmful to ecosystem, organism resource, economy development and human health.

水体溶解氧对于维持海洋生态系统至关重要，河口低氧区的存在会导致海域出现"生物荒漠化现象"，对河口生态系统、生物资源，经济发展及人类健康等造成严重危害。

By lengthening food chain of floating bed ecosystem and strengthening characteristic of microbial enrichment on the bed, a combined ecological floating bed using hydrophyte, aquatic animal and microbial ecosystem as main body was constructed, and the improvement effect of eutrophic source water quality was investigated.

摘 要：通过延长浮床生态系统的食物链和强化浮床的微生物富集特性，构筑了以水生植物、水生动物及微生物生态系统为主体的组合生态浮床，考察了其对富营养化水源水质的改善效果。

By lengthening food chain of floating bed ecosystem and strengthening characteristic of microbial enrichment on the bed,a combined ecological floating bed using hydrophyte,aquatic animal and microbial ecosystem as main body was constructed,and the improvement effect of eutrophic source water quality was investigated.

通过延长浮床生态系统的食物链和强化浮床的微生物富集特性，构筑了以水生植物、水生动物及微生物生态系统为主体的组合生态浮床，考察了其对富营养化水源水质的改善效果。

On the base of Pearson correlation coefficient indicate that the connection between IBI and CQHEI is higher than IBI and ISC of Juoshuei river basin. To the section of the upper and middle reaches, we suggest choosing simple and convenient SIAM to be the standard for environment in the future. But due to the type of ecosystem has a tendency to estuary ecosystem at the lower reach of Juoshuei river basin, SIAM is more unsuitable for evaluating at the reach. The correlation between each index is not notable, so we suggest seeking other assessment method as comparative environmental standards.

由指标相关性讨论可知栖地品质与生物完整性相关性较高(r=0.649)，水质状态与生物完整性相关性则较低(r=0.267)，对於中上游河段部分，建议日后进行河川生态环境调查时可选择简便易用的SIAM模式做为标准；下游近海河段则因河川型态渐转变为河口生态系的型态，故适用於溪流生态系的SIAM在适用性上较差，各指标间相关性并不显著，建议可寻求其他评估模式做为环境品质的判断标准。

The patterns and changing of The Changbai Mountain forest ecosystem services affected by human activities were explored in this paper. The impact of human activities on Changbai Mountain forest ecosystem services include positive effects and negative effects, they were expatiated in the paper. The positive effects include protecting idioplasm resources, wildlife and natural landscape, and forest fireproofing, and so on. The negative effects contain the capacity of biodiversity, purifying environment, regulating climate, buffering disaster and supplying product etc.

摘 要：本文分析了人类活动对长白山森林生态系统服务功能影响的方式和利弊，并将其影响分为正面影响和负面影响进行阐述，其中正面影响为生物种质资源保护、野生动植物资源保护、森林防火、自然景观保护等；负面影响为生物多样性维持能力下降、影响生态系统对大气和气候的调节过程、削弱净化环境的能力、影响水文调节能力、影响灾害缓冲能力、降低生态系统产品供给能力、改变营养物质的贮存和循环过程等。

Suburb is the transition zone between city and village , it is aslo the intersectional area where the artificial ecosystem of city and the natural ecosystem of village exists .

城郊是城市与乡村相交接的部分，是城市人工生态系统和乡村自然生态系统相交的边缘地带。

Don't listen to their haver, nothing of that sort.

别听他们胡说八道，根本就没那回事。

But bank's shares trade below their book value, suggesting that investors are skeptical.

但是，银行股票以低于账面价值的价格交易，这一点反应了投资者的怀疑。