生态的

It anlysises the connotation and the cause of the ecological risk. Based the research about ecological risk theory, the model of EVR has been established with use of VaR which is a very popular risk man agement model in international market.

系统探讨了生态风险的成因、内涵；结合当前国际上流行的VaR风险管理模型，在生态风险理论有关研究的基础上，建立了一类新颖而实用的区域生态系统风险管理模型－EVR。

This paper analyzes the main problems of agricultural development in the southern area of Ningxia province, summarizes the 20-year experiences of the experimental zone in the area, and puts forward four different models of eco-agriculture, fruit-vegetable model, fruit-seedling model, grass-fruit-livestock.

针对宁夏南部退化山区农业发展中存在的主要问题，在总结试区多年工作经验的基础上，提出了适合于当地农村经济发展的4种生态农业模式，系统分析了各种生态农业模式的经济、社会和生态效益及其推广前景，为半干旱山区退耕还林还草和农业可持续发展提供科学依据与实践基础。

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。

this article uses biophysical indicatrix with sustainable development-ecological footprint theory to adopt western region economic data in song-nen plain, to evaluate human influence on the earth ecosystem by determining current land area with biological production, to analyze ecological footprint and load capacity.

用国际上逐渐引起重视的衡量可持续发展的生物物理指标即生态足迹理论，采用松嫩平原西部地区经济发展资料，通过测定当前生物生产性土地面积的量来评估人类对地球生态系统的影响，对生态足迹和承载力进行了分析研究。

North region of Loess Plateau is one of the most serious regions of ecological imbalance in China.

黄土高原北部地区是我国生态环境破坏最严重的地区之一，当地所存在的一系列生态问题，不但威胁该地区居民的生存与发展，而且也影响我国东部地区的生态环境质量与经济发展。

With rapidly economic development and increasing in the demand for ecological environment, the bad ecological environment of disused opencast mining is causing bottleneck in the construction of ecological province.

随着我国经济实力的增强和人民对生态环境的要求日趋增高，废弃露采矿山恶劣的生态环境已成为城市发展和生态省建设的瓶颈。

With the development of research in eco-physiology of plants in adverse environment, and the need of environmental protection or reconstruction, it is pressingly necessary to enhance the eco-physiological research in desert psammophytes, in depth and systematically.

但是随著植物逆境生理生态在宏观和微观方面研究的不断深入和生态环境建设的需求，迫切需要加强沙生植物生理生态研究的深度和研究的系统性。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！