荒漠化

Desertification has an adverse effect on social and economic development of northwest regions of China.

日趋严重的荒漠化扩展对西部地区经济、社会发展及人们的生存环境造成了严重的威胁。

China will actively promote China-Africa cooperation in climate change, water resources conservation, anti-desertification, bio-diversity and other areas of environmental protection by facilitating technological exchanges.

加强技术交流，积极推动中非在气候变化、水资源保护、防治荒漠化和生物多样性等环境保护领域的合作。

The product is particularly well suited to the development of agriculture and animal husbandry, reforestation, gardening and landscaping, flora-cultivation, anti-desertification in arid and semi-arid areas.

该产品尤其适用于干旱及半干旱地区的农牧业生产、植树造林、园林绿化、花卉种植及土地荒漠化治理。

Do you know how much arable land has been desolated?

你知道什么每年有多少土地荒漠化吗？

Desertification is a serious problem in arid and semi-arid regions in China.

荒漠化是我国干旱、半干旱地区面临的最严重的问题。

Amateurs who are experienced in astrometry should have no trouble recording this mystery object with CCD-equipped 8-inch and larger telescopes.

业余谁都是经验丰富的天体不应有任何麻烦记录这种神秘物体与防治荒漠化公约，配备8英寸和较大的天文望远镜。

Unbalancing of water resources and land use is the essential reason of oasis desertification. Quantificational analysis of effects between water resources and land use is helpful to establish a model of combating desertification and to utilize water and land resources sustainable in oases.

绿洲荒漠化的根本原因是水土资源利用不平衡的矛盾引起的，定量化的研究二者的互相作用将有助于绿洲区荒漠化防治模式的建立和该区水土资源的持续利用。

The dissertation modifies the model of Holdridge's indexes of lifezone according to the features of the ecological climate of Xinjiang. The influence of the variation of vegetation caused by the climate variation of Xinjiang in recent decades is also analyzed. In recent 40 years, the type of life zone hasn't changed, the area and number of patch changed only. The diversity changed but not too much..That is, diversity of life zone changed in little range, the whole entiroment is still be a rather stable state, whill be goo for desertation expand contrandictorily.

根据新疆生态气候特征和生物地理规律对Holdridge生命地带分类模型进行修正，分析新疆近几十年来气候变化所引起的植被变化对于新疆土地荒漠化的影响。40多年来，新疆生命地带的类型数量并没有产生变化，只是各类型的面积和斑块数的变化，多样性有所波动，但是波动不大，也就是说生命地带多样性的震荡幅度不大，整个生态环境处于一种相对稳定的状态，这种稳定的生态环境状态有利于荒漠化的逆向发展； 7。

The landforms environment affects not only the rate of desertification, but also the mode and distribution patterns.

地貌环境不仅影响土地荒漠化的速率，而且制约土地荒漠化的方式和空间分布规律。

The desert and oasis Transition belt of Hetian River Basin belongs to the typical ecologically fragile belt. Wind power is the main driving force for land desertification and vegetation is the key determinants of land desertification.

和田河流域绿洲荒漠过渡带属于典型的生态脆弱带，风动力是该区土地荒漠化的主要动力因素，植被是该区土地荒漠化的重要决定因子。

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。