Food-Chain Model of Grassland Degradation and Its Restoration Process in Northern Tibet Plateau：A Case Study in Nierong County

Based on the model of grassland climate ecological productivity, the process of grassland degradation and its restoration mechanism in northern Tibetan Plateau were discussed by the model of food-chain in which the environmental and human factors were corrected. The results of case study in Nierong County showed that： ① the climate trend of becoming warmer, more droughts and gales were conflicted with the restoration of grassland degradation, even under level of perfect management the climate ecological productivity was declined from 89. 3 kg/m^2 of 1983 to 71.8 kg/m^2 of 2003; ② from 1983 to 2003, the population increased fast, while the variation of livestock on hand was little, and the cost of its maintaining is rapid grassland degradation; ③ on the present condition of overgrazing, the livestock on hand can be maintained on the level of theoretical carrying capacity in 2033 by applying the mechanism of food-chain in grassland ecological system controlled with expected coefficients, so that to realize the policy of determining the quantity of livestock according to grass growth.     

Development features and original altitude of a karst planation surface: Preliminary review

Traditional theories of geographical cycle and pediplain cannot describe correctly the development of planation surfaces in karst regions. Authors, therefore, put forward conception of karst planation and karst planation surface, suggesting that karst planation is another type of planation process characterized by chemical erosion and transformation. To identify the distinction between evolution features of normal landforms and those of karst landforms developed in the South China, authors suggest karst planation surfaces under similar environmental conditions may reach a lower altitude and gradient ratio, in contrast with normal landform areas. This may be applied to researching on Tibetan Plateau uplift.     

基于蒙古文的英语辅助教学软件的设计与实现

以九年制义务教育初中英语第一册（蒙授）为蓝本，设计了基于蒙古文的英语辅助教学软件，介绍了软件的主要功能、使用方式及软件的设计思路．     

蒙古高原天门冬属(Asparagus)植物区系生态地理分布研究

蒙古高原天门冬属植物区系的显著特点是 :其东部渗入了东亚中生植物区系成分 (有 5种 ,甚至包括 A.dauricus) ,西部渗入了中亚旱生植物区系成分 ( 3种 ) .由于长期自然选择适应和演化结果 ,蒙古高原本属植物有一个特有种 .此外 ,在贺兰山及祁连山形成了我国青藏高原北部山区的特有种类 ( 1种、1变种 ) .通过 Jascal相似性系数分析 ,蒙古高原天门冬属植物区系与华北、东北、新疆、中西伯利亚的植物区系联系较紧密 .蒙古高原本属植物区系在漫长的演化过程中 ,主要受到热带非洲旱生植物区系和热带亚洲印度—马来西亚中生植物区系的影响 ,分别形成了旱生植物区系成分和中生植物区系成分 ,并且两种植物区系成分在蒙古高原荒漠化草原区形成重叠 ,形成现今蒙古高原天门冬属植物区系格局 .     

现代提取技术及其在蒙药成分分析中的应用前景

随着分析科学的发展,一些现代提取技术诸如超临界流体萃取、强化溶剂萃取、固相萃取和固相微萃取、亚临界水萃取、超声波辅助萃取、微波辅助萃取等提取技术得到了发展.这些提取技术在蒙药成分分析中有良好的应用前景,它们将在某种程度上促进蒙药现代化进程.     

英-蒙机器翻译系统中机器词典的建立

简要介绍了在英—蒙机器翻译系统中怎样建立机器词典 ,以及建立过程中所遇到的一些问题和解决的方法     

蒙药清肺汤的抗菌作用及对小鼠非特异性免疫功能影响的实验研究

探讨清肺汤的抗菌作用及对小鼠非特异性免疫功能的影响 ,揭示其治疗呼吸道感染性疾病的作用机理 .实验表明 ,清肺汤在体外有较广的抗菌谱 ;能使正常及免疫低下小鼠腹腔巨噬细胞吞噬百分率和吞噬指数显著升高 (P <0 0 5 ) ;使正常小鼠的胸腺重量明显增加 (P <0 0 1) ,并拮抗环磷酰胺所致的小鼠胸腺、脾脏重量降低 (P <0 0 1) .     

青藏高原拟步甲科昆虫足的特化及其适应性

通过对青藏高原拟步甲科昆虫足的比较研究发现，为适应严酷的高原环境，足的适应性特征主要是：地面活动的种类足明显伸长；地下活动种类足明显短缩，胫节外缘具齿，端外角明显延伸；生活于陡峭地区的种类胫节内端距发达，跗节腹面端部出现浓密的毛刷．     

南江黄羊瘤胃切开手术病例报告

简述了南江黄羊瘤胃紧急切开术的适应症,介绍了消毒、保定、麻醉等步骤,具体描述了手术过程。     

黄土高原地区的环境资源与持续发展

黄土高原地区生态环境退化，水土流失和沙漠化十分严重，阻碍了该地区的经济发展．同时，这个地区有丰富的资源急待进一步开发．环境综合治理与资源开发是该地区经济持续发展的战略中心，从长远利益考虑，处理好治理与开发的关系，协调环境、资源、社会及经济发展的关系是改善黄土高原生态环境必由之路，也是地区经济持续发展的保证．在环境治理政策方面，注重鼓励性政策、地区政策、社会保障政策及资金投入政策．