| 1. | The world's natural ecosystems act as a buffer .
地球上的自然生态系统起着一种缓冲的作用。 |
| 2. | The species that make up natural ecosystems usually display a wide range of genetic variability .
构成自然生态系统的生物种，通常表现有较大范围的遗传变异性。 |
| 3. | The plants of natural ecosystems are usually well adapted to the edaphic and climatic character of their region .
自然生态系统的植物，通常十分适应当地的土壤和气候特点。 |
| 4. | Accumulation of toxic substances in the biosphere is causing serious changes in the structure and function of natural ecosystems .
生物圈内有毒物质的积累，造成了天然生态系统的结构与功能的严重变化。 |
| 5. | Research on restoring natural ecosystem of polluted rivers
污染河涌生态恢复的可行性方法 |
| 6. | Another difference is that parks are now expected to function like natural ecosystems as well as looking like them
另一个不同的地方，是现在的公园都像它们看上去那样，有自然生态系统的功能。 |
| 7. | Society was traditionally developed in the price of ecoenvironment destruction while natural ecosystem was sustainable developed
摘要人类传统的社会发展是以破坏生态环境为代价，而自然生态系统是可持续发展的。 |
| 8. | Main research conclusion is as follows : 1 the eco - fragile area is a district where natural ecosystem is out of balance over a long period of time
主要研究结论如下： 1生态脆弱区是指那些自然生态系统长期处于失衡状态的区域。 |
| 9. | It have the natural ecosystem ' s ordinary characters , the same time receive society , fertility , production relations and the relating building up on it
它既具有一般自然生态系统的特征，同时又受社会，生产力，生产关系以及与之相联系的上层建筑所制约。 |
| 10. | Wetland landscape changes in structure and process have huge impacts on environmental changes caused by the spatial and temporal interaction of wetland natural ecosystem processes
该过程对系统的能量流动、物质循环以及物种迁移产生作用，对地理环境也产生巨大环境效应。 |
