HulunBuir Grassland is endangered by a new phase of sandy desertification.

呼伦贝尔沙质草原正面临新一轮沙漠化的严重威胁。

But in recent years, sandy desertification occurs in the large areas of sandy grasslands in Hulunbuir Steppe.

近年来，该草原中的砂质草场已大面积发生沙漠化。

Hulunbuir Steppe is one of the high quality natural pastures and important livestock husbandry bases in China.

呼伦贝尔草原是我国优质的天然牧场和重要的畜牧业生产基地。

On the basis of the understanding of the these theories, methods and procedures, empirical research of zoology environment layout in the Hulunbuir city.

在了解了生态环境规划的理论、方法和程序的基础上，对呼伦贝尔市生态环境规划进行实证研究。

From space postitions, significant change area is northwest of Tongliao city and west and northeast of Xilinhot, and the area of Tongliao city around and Hulunbuir is also significant change area.

从空间位置上看，通辽市西北部及兴安盟西部和东北部变化最大，通辽市科尔沁区和四周旗县及呼伦贝尔市草地向林地演变的交错带为变化明显区域。