生态种的

The roles and economic significance of four rodents (Phodopus roborovskii,Dipus sagitta,Meriones meridianus and Crivetulus barabensis) inhabiting in Erdos sandland were evaluated from the point of energy flow and material cycle.

摘 要：以鄂尔多斯沙地中的4种主要啮齿动物小毛足鼠、三趾跳鼠、子午沙鼠和黑线仓鼠为对象，从能流和物质循环的角度对其在生态系统中的地位、作用及其经济意义进行了定量评价。

This paper will suggested the method of using scenical insect in unbar green space systerm planning from both aspect:landscape plant and i.

不同的植物群落具有不同的昆虫群落，在昆虫群落中，观赏性昆虫可作为一种新兴的生态景观应用于绿化中，譬如蝴蝶、蟋蟀、萤火虫等。

Transformation of the county plans to build 4 million mu of tea garden base, of which 2.5 million mu of transforming low-yielding tea plantation, the new eco-organic tea garden 1.5 million to complete the seed 300 acres of nursery stock breeding, the new 2-3 home larger tea processing enterprises, the annual tea strive to reach 11,000 tons output, output exceeded 280 million yuan.

县转型计划建造400万茶园基地，其中250万改造低万亩高产茶园亩，新的生态有机茶园150万元，完成300种苗木繁育，新英亩2-3家较大的茶叶加工企业，每年的茶叶努力达到一一零零零吨产量，产量超过2.800亿元。

The carbon isotope composition of single alkanes (δ13Cia) in two plants (Leontopodium leontopodioidies and Taraxacum mongolicum ) growing in the northeastern Qinghai-Tibet plateau was analyzed by means of GC-IMS in order to know its relationship with altitude,and furthemore, to gain new data for the research on climatic changes.

用色谱—同位素质谱仪对青藏高原东北部高寒草甸生态系统中的两种高等植物—火绒草和蒲公英的烷烃进行分析，讨论环境因素对植物单体烷烃碳同位素组成（δ13Cia）的影响。

The thermocline is one of familiar physical phenomena in the ocean, the transitional layer between the mixed layer at the surface and the deep water layer, the definition of which is based on temperature.

温跃层是海洋环境中的一种重要物理现象，对海洋的环境生态系统有着重要的影响。

The results show that there aresignificant effects of the different light intensity of UV on the OAT activities ofthe three plants, Lemna minor, Alternanthera Philoxeroides and Trapa bocornis.

试验结果表明：三种植物的CAT对不同光照强度的UV均有明显的生态效应，但其效应表现随物种而异。

As a kind of good material for paper manufacturing and being environmental friendly especially for salina soil, Arundo donaxl planting has good economic, environmental and social benefits, so it is planted in large-scale in many provinces such as zhejiang, Anhui, Fujian, Sichuan, Yunnan, Guangdong, Hebei, Shanxi, Shandong, Guangxi, and the planting acreage is more than 10,000,000 acres.

由于芦竹是一种优质的造纸原料，且对盐碱滩涂土壤有良好的环保作用，具有较好的经济、生态和社会效益，在我国浙江、安徽、福建、四川、云南、广东、河北、陕西、山东、广西等省种植面积达1000万亩以上。

Microbialites represent a particular ecosystem, composing of cyanobacteria and other benthonic organisms.

微生物岩所代表的是一种以蓝细菌和其他底栖生物为主体的独特的生态系。

This study monitored some important molecular ecotoxicological indicators of fish intoxicated by benzo pyrene.

通过测定典型的多环芳烃类物质苯并芘致毒后鱼体内几种重要分子生态毒理学指标的变化，来反映苯并芘致毒对鱼体的影响。

Habitat utilization of root vole was studied in the region of Haibei Alpine Meadow Ecosystem Research Station, the Chinese Academy of Sciences, from July to September of 2002 and 2003. Three indexes of activity intensities, runway length, runway branch number and burrow entrance number were used to estimate root vole's utilization intensities on four types of habitats, manual cultivated land, true meadow, swamp meadow and Dasiphora fruticosa shrub.

为研究根田鼠对不同类型栖息地的利用强度，于2002-2003年的7-9月在中国科学院海北高寒草甸生态系统定位站地区采用样方法测定了4种类型栖息地（人工耕作地、真草甸、沼泽化草甸、金露梅灌丛）中的3个根田鼠活动强度变量（跑道长度、跑道分叉数、洞口数）。

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！