[Objective] The aim was to accurately and truly reflect the changes in structure and function of the desert steppe ecosystem in Inner Mongolia. [Method] The desert steppe in Damao Banner was taken as the object of study,the change of vegetation coverage,grassland produc-tivity and carrying capacity in recent more than 30 years was studied by using 3S technology. [Result] The coverage of grassland vegetation in Damao Banner was increased by 2% compared with in the initial period of 2000;the productivity of grassland in Damao Banner decreased from south to north,which was higher than that in 2003;the carrying capacity of Damao Banner grassland was increasing compared with the 1980s and in the initial period of 2000. [Conclusion] The result provides theoretical basis for Inner Mongolia to make up ecological management decision.

我国北方荒漠草原地区生态环境总体上具有结构简单、易受干扰、自我调节能力差等特点.因此,在全球气候变化的大背景下,由于农业与牧业之间的激烈竞争,加之区内气候波动、人类活动干扰等诸多因素,对荒漠草原地区的生态环境和结构产生了重大影响.为了能准确和真实的反映我国北方荒漠草原地区生态系统的结构和功能的变化,该文选定达茂旗为研究对象,通过对草地退化结构变化、草地等和级结构变化的研究,得出以下结论:(1)相比20世纪80年代达茂旗退化、沙化、盐渍化草地,以及重度退化和重度盐渍化草地相比20世纪80年代都有所减少;(2)达茂旗草地等级由低一级的草地向高一级的草地逐渐演变;(3)达茂旗草地质量相比20世纪80年代有所降低.

利用数值预报技术开发了包括背最资料自动采集传输、航空气象业务产品预报模块、产品后处理、产品的采集传输和内蒙古航空气象服务网站五个部分的内蒙古自治区航空气象预报服务业务系统.通过业务系统的开发达到给内蒙古气象部门内部承担航空气象服务的民航气象台提供技术指导和预报指导产品,提升为航空气象预报服务的能力和科技水平.

this paper by using conventional meteorological observation data in March 2011 to 12-14 within the territory of the Inner Mongolia appears winds dust weather process from the weather situation,strong wind formation mechanism and so on,were analyzed for the similar weather forecast analysis reference.

The aim of this paper is to study the effect of model horizontal resolution on temperature and precipitation by WRF in Inner Mongolia in 2011.The results showed that the model with the horizontal resolution ratio of 27km have good performance in simulating the area and intensity of precipitation in our region.Meanwhile,the simulated precipitation of single station which result in the performance variations under different resolutions ratio,when the resolution ratio was raised,TS score and the rate of vacancy forecast decreased,but the missing report rate increased significantly.There have no obvious positive correlation between the increased resolution ratio and the forecast accuracy of temperature.The forecast accuracy of 12-hours was significantly higher than the latter12-hours,but the latter improved more obviously by the increased resolution ratio.

Using the data of 12 sounding stations from Janury,2001 to December,2010 in Inner Mongolia,the atmospheric moisture content was calculated,and the spatial and temporal distribution characteristics and variation trend were analyzed,The results showed that the July monthly mean atmospheric moisture content reached the max value in last 10 years,which was 3.106 cm.The January monthly mean atmospheric moisture content reached the min value in last 10 years,which was 0.303 cm.The values of atmospheric moisture content over Hetao area were becoming higher.The correlation between atmospheric moisture content and precipitation was positive.It was also shown that the annual mean atmospheric moisture content was in a decrease variation trend.