关键词: 沙漠化过程, 生物量损失, 评估, 科尔沁地区

Abstract: The aeolian desertification is land degradation through wind erosion in arid, semiarid and sub-humid regions mainly resulted from the excessive human activities on natural resources in Northern China. The process of aeolian desertification in Horqin Region, Inner Mongolia had come through development and reversion for last 5 decades. There were about 50 200 km² aeolian desertified land in different type and degree in the region by 2000. The loss of biomass through the process of aeolian desertification mainly incarnated the course of ecosystem degradation, which occurred along with the destruction of structure and function, vegetation degeneration and soil sandification. The result is that the desert ecosystems have been formed with lower productivity and biomass. In 2000 the loss of biomass from the aeolian desertified rainfed-farmland and grassland were 0.686 and 10.082 million ton respectively, total 10.768 million ton in the region. It can be estimated that the total loss of biomass was 441.488 million ton for the last 41 years by 2000 in the Horqin region, Inner Mongolia, China.

Key words: process of aeolian desertification, loss of biomass, evaluation, Horqin region, Inner Mongolia