荒漠化

We can infer that contrived factor is distinct contribution from the four extracted prime components. The contributing rate in the first prime component is 54.4%.

从提取出的四个主成分看出，人为作用对荒漠化有显著的贡献，第一主成分中变量的贡献率是54.4％。

Desertification already accounts for a quarte(1/4) of the globe's land areas, and it expands at the rate of 50-70 thousand square miles per year.

全球荒漠化已占地球陆地面积1/4，在以每年5～7万平方公里的速度扩大。

Otindag Sandland is one of the main sandlands and among the most seriously desertificated region in semiarid area of China.

浑善达克沙地是我国北方干旱半干旱区的主要沙地和严重荒漠化地区之一。

Desertification is land degradation occurs in arid, semi-arid and subhumid regions, which is one of the he environmental problems human society generally concerned in the context of global change, has a direct relationship with the survival and development of their own humanity.

沙漠化即发生在干旱、半干旱及半湿润干旱地区的沙质荒漠化，是全球变化背景下，人类社会普遍关注的环境问题之一，与人类自身的生存和发展有着直接的关系。

The device then stays off for a pe- riod, TOFF, that is 32 times the TON delay.

该装置然后停留了一个体育，荒漠化问题，花花公子，这是32倍，震延误。

He recently completed two years of fieldwork on transnational environmental cooperation to prevent desertification and protect wetlands in Northeast Asia.

他最近完成了两年的田野关於跨国环境合作，以防止荒漠化和保护湿地，在东北亚地区。

Article 38 The state encourages units and individuals in the development of unexploited land in accordance with the overall planning for land utilization and under the prerequisite of protection and improvement of the ecological environment, prevention of water and soil erosion and land desertification; the land suitable to be developed into agricultural land should be developed into agricultural land on a priority basis.

第三十八条国家鼓励单位和个人按照土地利用总体规划，在保护和改善生态环境、防止水土流失和土地荒漠化的前提下，开发未利用的土地；适宜开发为农用地的，应当优先开发成农用地。

So plant species generally possess characteristics of xerophil living environment for long time.

通过干燥指数的植被反演，得出整个流域的大部分地区为典型草原和荒漠化草原，草甸草原在海拔较高的地区如华家岭、胡麻岭、崛吴山和月亮山出现。

Although there is a large of arid or semi-arid area and abundant plant source in North China,the globle warm and environment change made so many xerophil species face to huge challenges of unfavorable environment,especially,water stress.

中国北方地区因其独特的地理位置和气候条件，使该地区旱生植物资源非常丰富，但受全球气候变暖的影响，荒漠化程度日益严重，而这些旱生植物种群也将面临原有生存环境发生改变的严峻考验，其中，水分条件的改变是学者们普遍公认的重要环境改变之一。

Ordosica community and increased from A. ordosica community to C. komarovii community. The meso-xerophyte decreased gradually with the strong xerophyte gradually increasing during the desertification of the grassland.

结果表明：在鄂尔多斯草地荒漠化过程中，植物群落退化的趋势为本氏针茅群落→本氏针茅+油蒿群落→油蒿群落→油蒿+牛心朴子群落→牛心朴子群落。

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。