查询词典 ecosystems

In spite of the well-acknowledged environmental benefits of wind power generation,there is increasing concern upon impacts from wind turbines on local ecosystems and on the natural scenery.

风力发电具有公认的环保优势，但风力发电工程对局部生态环境及自然景观等影响也日益受到人们的关注，主要体现在风轮机的视觉污染、噪音、鸟类安全及电磁干扰等方面。

Based on the field investigation in Aug 2001 and Aug 2002, digital China Vegetation Map in 2001 and Qinghai-Xizang Plateau Vegetation Regionalization Map in 1996, vegetation characteristic along two sides of Qinghai-Xizang highway and railway is studied in this article Meanwhile, the impacts of Qinghai-Xizang highway and railway constructions on the ecosystems are analyzed using ARCVIEW、ARC/INFO and PATCH ANALYSIS It was found that:(1) Qinghai-Xizang highway and railway span 9 altitudes,12 longitudes and 6 natural regions (East Qinghai and Qilian mountain steppe region, Chaidamu mountain desert region, South Qinghai alpine meadow steppe region, Qiangtang alpine steppe region, Guoluonaqu alpine scrub meadow region and South Xizang mountain shrub steppe region);(2) the constructions of Qinghai-Xizang highway and railway destroyed natural vegetation and landscape, especially in 50m-wide buffer regions along both sides of the roads, it was estimated that the Primary Productivity deceased by about 30504.62t/a and the gross biomass deceased by 432919.25～

：根据2001-08和2002-08月野外调查数据及2001年1∶100万中国植被图、1996年1∶400万青藏高原植被区划图和2000年青藏铁路沿线自然保护区分布及功能区界调整图，以青藏公路铁路沿线植被生态系统为研究对象，运用ARCVIEW和ARC/INFO软件研究青藏公路铁路建设对沿线生态系统结构的影响，结论如下：①青藏公路铁路南北跨越9个纬度，东西跨越12个经度，共穿越青东祁连山地草原地带、柴达木山地荒漠地带、青南高寒草甸草原地带、羌塘高寒草原地带、果洛那曲高寒灌丛草甸地带和藏南山地灌丛草原地带6个自然区，对植被类型的统计结果显示了地带性。②青藏公路铁路的建设对生态系统产生直接的切割，使景观更加破碎。

Proctor J Mineral nutrients in tropical forest and savanna ecosystems Oxford:Blackwell Scientific Publication , 1989,null

曾水泉 海南岛土壤植被系统的地球化学广州：广东科技出版社， 1989，null

The salt-loving tall grass thrives in beach ecosystems and helps to form and protect sand dunes by collecting windblown grains.

盐--爱好高的草兴旺生长在海滩生态系统并帮助形成和保护沙丘收集被风吹的谷物。

In mechanical communities, or ecosystems, some machines are more likely to associate with certain other machines, just as red-winged blackbirds favor nesting in cattail swamps.

在机械群落里，或是说机械生态系统里，某些机器好像更愿意和另一些机器在一起，就像红翅膀的黑鸟喜欢在有香蒲的湿地筑巢。

In mechanical communities, or ecosystems, some machines are more likely to associate with certain other machines, just as red-winged blackbirds favor nesting in cattail swamps. Pumps go with pipes, furnaces go with air conditioners, switches go with wires.

在机械群落里，或者说机械生态系统里，某些机器好像更愿意和另一些机器在一起，就像红翅膀的黑鸟喜欢在有香蒲的湿地筑巢，泵与管相配，暖炉与空调相配，开关和导线相配。

It is well known that arbuscular mycorrhizae are ubiquitous symbiotic associations found in both natural and agricultural ecosystems,including heavy m.

丛枝菌根(Arbuscular mycorrhizae，AM)是自然界中分布最广的一类菌根，AM真菌能与陆地上绝大多数的高等植物共生，常见于包括重金属污染土壤在内的各种生境中。

Ecosystems are particularly affected by large-scale fishing, freshwater use, and agriculture.

生态系统尤其受大规模渔业生产、淡水利用及农业活动的影响。

With one of the most vibrant underwater ecosystems in the Caribbean, Dominica offers scuba divers aquarium-clear water with visibility that can reach 100 feet (30 meters).

多米尼克有是加勒比其中一个最丰富的海底生态系统，为潜水者提供了水族馆般清晰的高能见度达100英尺（30米）。

With one of the most vibrant underwater ecosystems in the Caribbean, Dominica offers scuba divers aquarium-clear water with visibility that can reach 100 feet (30 meters).

多米尼加拥有着加勒比海最生机勃勃的地下水生态系统，它的水可见度达100英尺（30米），给予那些携带氧气瓶的潜水者水族馆般干净的水。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48