查询词典 ecosystem

It can provide some theoretic gist for resource value of water and soil in sandy land to indicate the change and law of soil moisture character, as well as the water circulation and balance mechanism in sandy land, at the same time, it have important practical significance to protect limited water resource, improve using efficiency of water resource,control desertification, choose and educate sand binding plant, renew and restore degraded ecosystem, as well as the economy benefit of irrigative agriculture and intending trend of development.

揭示沙地土壤水分特征的变化规律以及沙地水循环和平衡机理，可以为沙地水土资源评价提供一定的理论依据，同时对于保护当地有限的水资源和提高水资源的利用效率，以及沙漠化防治，固沙植物的选育，退化生态系统的恢复与重建，灌溉农业的经济效益和未来的发展趋势都具有重要的实践意义。

Three seriousenvironment problems of the soil erosion, desertification and salinization in the aridand semiarid area not only endanger the throughput and the stability of the dry landfarming, but also jeopard the country ecosystem security.

干旱、半干旱地区的水土流失、土地沙漠化、土壤盐碱化三大环境问题，不仅直接危害北方旱地农业系统的生产能力和稳定性，而且危及到了国家生态安全建设。

The Implement of Hongshan thermoelectricity Engineering of Fujian is in order to meet the increasing heat need of the enterprises of in Xiangzhi,Hongshan and Jinshang Industry areas,alleviate the air pollution,improve the ecosystem environment of the native area.

本文通过国内外节能减排指标体系的综述，结合石狮市三镇集控区的区情，建立石狮市三镇集控区工业企业节能减排指标体系，对石狮市鸿山热电厂这一集中供热节能减排措施推进前后进行指标的核算，从而提出有针对性的对策建议。

Integrated ecosystem is made up with jussiaea stipulacea ohwi, bellamya purificata, algae and microorganism which attached on the porous concrete surface and is able to remove 95% TP, 75% TN and 75% COD.

试验表明：附着生长在多孔混凝土上的黄花水龙、杂藻、螺蛳以及微生物形成一个完整的微生态系统，6周后可使水体中TP的去除率均达到95%，TN的去除率达72.5%， COD去除率达到75%。

Next, we rode to a place to ride on a bamboo raft, we took a look of the mangrove forest ecosystem, we saw some fiddler crabs and kandelia.

后来，我们骑到一个不知名的地方搭竹筏，看红树林的生态，我们看到了招潮蟹跟水笔仔。

Compound ecosystem bag contains all corners of the country with medium, downstream the Yangtse River river and laky two environments are unit.

长江中、下游的江湖复合生态系统包含有河流和湖泊两个环境单元。

In May 2007, benefit city west lake began the ecosystem rehabilitate that with aquatic vegetation compose is built and fish adjusting control gives priority to and compose to build project, in order to control laky eutrophication, improve laky water quality.

梗概： 惠州南湖是典型的亚热带浅水城市湖泊。2007年5月，惠州西湖开展了以水生植被构建和鱼类调控为主的生态系统修复和构建工程，以控制湖泊富营养化，改善湖泊水质。

These results provide new insights into how leptosporangiate ferns response to the terrestrial ecosystem changes caused by the rise of angiosperms.

这对认识薄囊蕨类如何应对被子植物兴起导致的陆地生态系统改变具重要意义。

The authors investigate and study the species diversity of Leucaena leucocephala plantation. discuss its function of ecology and the relation between species diversity and the function of ecosystem.

通过对金沙江干热河谷新银合欢人工林物种多样性方面的研究，讨论了种在退化生态系统功能恢复中的作用及物种多样性与生态系统功能的关系。

To establish a general and quantitative platform of lake ecosystem management, predictive limnological researches on mid-lower Yangtze shallow lakes were carried out systematically in 46 small- to medium-sized lakes, using data from field investigations and references.

为建立适用范围较广的湖泊生态系统定量管理平台，本研究通过对46个中小型湖泊的实地调查，并运用部分文献资料，系统地开展了长江中下游浅水湖群的预测湖沼学研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。