水土

Reforestation is an effective measure of vegetation restoration and erosion control in this area.

植树造林是该地区植被恢复发育及控制水土流失的有效措施。

With the case study on Wanzhou in the three-gorges reservoir area, it had been studied and analyzed that the potentialities of exploitation and use on land and ecological safety by established land use database, and it had been revealed that serious loss of water and erosion of soil, ecological environment fragility, the water conservancy project submergence a large amount of land, arrannements of the numerous immigrations need a large amount of land, contradictory remarkableness among human and land, and the latent crisis by extensive management land were main crises and questions of the land use.

利用建立的土地利用现状数据库，以三峡库区最大淹没区万州为研究对象，对库区土地开发利用潜力及生态安全性进行了分析和研究。揭示了库区土地资源利用中存在的主要危机是水土流失严重、生态环境脆弱，三峡工程淹没土地多、移民迁建占地比重大、人地矛盾加剧及粗放经营土地带来的安全隐患等问题。

Miyun reservior is the most primary water supply source in Beijing, water and soil loss in the upper reaches has important influence on ecological safety in capital area.

密云水库是北京市最主要的供水水源，上游地区的水土流失对于首都地区的生态安全具有重要影响。

There are multiaspects influence of soil and water loss on water quality of reservoir.

水土流失对水库水质的影响是多方面的。

Where aridity, degeneration or soil erosion occurs as a result of overgrazing, users of the grasslands shall be required to reduce grazing and resow forage grass so as to restore vegetation.

因过量放牧造成草原沙化、退化、水土流失的，草原使用者应当调整放牧强度，补种牧草，恢复植被。

Soil degradation caused by erosion and loss of vegetation is the principal problem to sustainable ecology in the xerothermic regions. Revegetation is considered as the essential process of soil restoration.

植被散失和水土流失导致的土壤退化是影响干热区生态可持续发展的主要问题，植被恢复是修复退化土壤的基本过程。

Soil erosion is one of the most serious eco-environment problems in Yangtze River Basin in China.

长江流域，特别是长江中上游地区是我国水土流失的重点地区之一。

Soil erosion is one of the most serious ecoenvironment problems in Yangtze River Basin in China.

长江流域，特别是长江中上游地区是我国水土流失的重点地区之一。

It is proposed that this is an appropriate method to evaluate the root function of different crops or plants in maintaining slope stability.

该测定方法可以在水土保持上作为评价不同作物固土能力的有效参考手段。

Due to their rapid growth and strong root system, they also help reduce soil erosion.

由于他们快速的生长和强壮的根系系统，他们能有效减少水土流失现象。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。