查询词典 ecosystem

Taking systematic vigor, institutional structure, recuperability and serving functions as springboard, the index system of ecosystem health assessment in middle reaches of Hotan River Basin is established, which contains nineteen indexes and they are mainly constituted from four aspects as follows:ecological security, social development, environmental guarantee and population group health.

和田河流域中游生态系统健康评价指标体系的构建。以体现系统活力、组织结构、恢复力、服务功能作为出发点，构建了由生态安全、社会发展、环境保障、人群健康4个方面量度，19个单项指标组成的和田河流域中游生态系统的健康评价指标体系，基于AHP法的评价。

On the basis of further investigation and research selected from representative objects, the forest ecosystem management is analyzed systemically and designed representatively.

在深入调查并选择有代表性的对象进行研究的基础上，对森林生态系统经营进行系统分析和典型设计。

The Dongting Lake area is the largest lacustrine wetland ecosystem in China,where biological resources are very plentiful,which include 1428 species of plants,216 species of birds, 119 species of fishes,27 species of amphibians and retile,22 species of mammals and a great number of other wild living things.

中文摘要：洞庭湖湿地是我国最大的淡水湖泊湿地生态景观系统，生物资源十分丰富，其中植物资源 142 8种，鸟类资源 2 16种，鱼类资源 119种，哺乳类 2 2种，两栖爬行类 2 7种及其它大量的野生生物资源。

All these activities changed or weakened the structure and function of the riverine ecosystem.

这些活动都直接或间接地改变或损害了河流生态系统的结构、功能。

As restoration of riverine ecosystem is very difficult or even impossible, protection measures are more needed than remediation.

保持河流各方面整体协调是流域开发研究的重点和必然趋势。

In the aim of efficient ecological restoration of riverine ecosystem, the importance and necessity of establishment of the watershed ecology view are emphasized.

出于有效进行生态恢复的目的，强调树立流域生态观念的必要性，建议从流域的角度出发进行综合整治

In the aim of efficient ecological restoration of riverine ecosystem, the importance and necessity of establishment of the watershed ecology view are emphasized.

出於有效进行生态恢复的目的，强调树立流域生态观念的必要性，建议从流域的角度出发进行综合整治。

The paper has provided scientific supports for maintaining riverine ecosystem health and achieving good management.

为探索有效的河流生态系统修复途径和管理策略，维持河流系统的健康，逐步实现水生态系统的良性循环，我国已把河流生态系统的保护与修复列为&十一五&规划的重要内容之一。

Ruppia maritime is an important elementary producer in the inshore ecosystem. Understanding its ecological characteristics is significant to restoring the degenerated and polluted coastal wetland ecosystems.

川蔓藻是近海生态系统中重要的初级生产者，了解它的生态学特征对于河口海岸带的生态修复具有重要意义。

Soil ecological degradation can be defined as the process and phenomenon of a series of deterioration of soil ecological environment such as structural destruction and functional recession of soil ecosystem, decrease of soil biodiversity and productivity, dcsertification, drought, hardness, acidification and salination of soils, deficit and unbalance of soil nutrients, and loss of soil and water, resulting from human activities and adverse natural environmental conditions.

土壤生态退化是指由于人类活动及恶劣的自然环境条件作用或二者共同作用下造成的土壤生态系统结构破坏、系统功能衰退、土壤生物多样性减少、土壤生产力下降以及土壤荒漠化、干旱化、板结化、酸化、盐碱化和养分亏缺与失衡等一系列土壤生态环境恶化的过程和现象。

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％。