1·As one of populous artificial ecosystems in the ecology domain, the security of urban ecosystem is more fragile.
作为人口高度集聚的人工生态系统，城市生态系统的安全性更加具有脆弱性。
2·It is a land of natural ecosystems into artificial ecosystem process, is also a natural, economic, and social factors at the complex process.
它既是一个把土地的自然生态系统变为人工生态系统的过程，也是一个自然、经济、社会诸因素综合作用的复杂过程。
3·Urban green space task of planning to is it resume city natural characteristic to want, artificial with design as an ecosystem naturally, realize people and natural harmonious intergrowth.
城市绿地规划的任务就是要恢复城市自然特性，把人工和自然作为一个生态系统来设计，实现人与自然的和谐共生。
4·Because of the influence of the nature factor and the artificial factor, district ecosystem environment the function is continuously deteriorating.
由于自然因素和人为因素的影响，区域生态环境功能不断退化。
5·Purpose its is it dispel too much artificial original ecosystem that joining cause of energy out - of-balance to lie in.
其目的在于消除过多人工能量的加入导致的原有生态系统的失衡。
6·The ecosystem balance of wetland was destroyed by multifarious artificial activities.
由于人为活动较频繁，致使湿地生态平衡受到威胁。
7·The results show that this ecosystem of artificial sea water, which is applicable to teaching and research sea animals in the laboratory, will be stable and balanced under the correct adjusting.
试验结果表明，这种人工海水生态系统在正确的调校下能达到稳定和平衡，适合于在实验室饲养供教学和科研的有关动物。
8·A experiment was done to study the relation between biological factors and nutrients in soil in an artificial fruit-grass ecosystem.
试验研究了果—草人工生态系统中土壤生物因子与土壤养分的关系。
9·Artificial forest ecosystem of Lanhzou South-north Hills is an important component of Lanzhou urban ecosystem, it has decisive influence on Lanzhou urban ecological environment.
兰州南北两山人工林生态系统是兰州市城市生态系统的重要组成部分，对兰州市城市生态环境有着举足轻重的影响。
10·Resuming the submerged macrophyte as centre of this technique , by the artificial measure, rebuild and repair the river lake ecosystem system .
本项技术以水生植被的恢复为核心，通过人工辅助措施，重建、修复河湖水生态系统。