查询词典 ecosystems

Based on this background, the interactions between plant secondary succession and arbuscular mycorrhizal fungi in heathland ecosystems were explored, through spot investigation and laboratory stimulation. Results indicates a close relationship between the inigenous AMF and plant diversity.

本项目以此为立题背景，通过实地调查、室内模拟两个途径，研究草山草坡生态系统中植物次生演替与丛枝菌根真菌的多样性之间的互作关系。

No great difference in the physical properties or chemical structure of humus exist between different terrestrial ecosystems.

禁止伟大在腐殖质的物理特性或者化学结构中差异在不同陆地生态系之间存在。

Implicit in this definition is that ecosystems are naturally dynamic .

生态学恢复是退回生态系的过程越紧密越好到干扰前情况并且作用。

Due to the inclemency of climate and soil conditions and the intense disturbance of human beings,the soil resources heterogeneity in arid and semi arid grassland ecosystems worldwide was gradually increased during the last century.

世界许多干旱、半干旱地区草地生态系统逐渐被灌木生态系统取代，这种取代过程的发展是由灌木冠幅下土壤中"肥岛"的形成和灌木的扩散相互作用直接造成的。

While the holism,harmony and homeostasis of some aquatic ecosystems which are dependency of fishery on were neglected in some parts of fishery development, that resulted in inharmony between nature and man, and unfavourable to the sustainable development.

但其中有些部分忽略了水产所依托的水生态系统的整体性、协调性和稳态，导致人与自然在某些方面失调，不利可持续发展。

In the name of modernisation and the founding of a "New World" based on what were believed to be limitless resources, the ecosystems of the great American plains were utterly and irretrievably transformed.

在推进现代化和建设"新世界"的旗号下，在资源无限的错误观念下，美国大平原的生态系统被彻底地、无法挽回地改变了。

To facilitate the restoration and recovery of reef ecosystems and to protect the marine resources, the government of Taiwan ROC has designated Dongsha Atoll as a marine national park in March 2004. The area encircled by 100 m isobath has been designated as the protected zone and the area encircled by 12 miles from the edge of the atoll has been declared as the general control zone.

为了保护东沙环礁的生物资源及促进环礁生态系的复原，政府已於2004年3月通过设立东沙国家海洋公园，预定将环礁外围100公尺等深线之内的范围划设为海洋生态保护区，此界限至环礁外围12里为一般管制区。

In this paper stable isotope techniques applied to forest ecosystems were overviewed.

本文综述了稳定性同位素技术在这一领域的应用进展。

Continental shelves support some of the most productive of marine ecosystems, such as kelp forests and fisheries.

大陆架 大陆架支持了最具生产力的海洋生态系统，如海藻林和渔业。

Forest Co2 flux has become a hot issue and larch forest ecosystems in the northern hemisphere are very suitable for this study.

森林CO2通量的研究已经成为科研的热点而北半球遍布的落叶松林是理想的研究材料之一。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。