浅谈丘陵山区草原的综合治理

概述了通过采取水利工程和生物工程治理山区草原的综合措施。     

退分草原围封恢复过程中草场质量动态的研究

利用十年研究结果表明，围封后，草场的总产量在第 二年即可基本上恢复到与当地的大气降水相互平衡的水平，但其中的草群类型和各种植物生物量的消化变化则是相对缓慢、逐渐进行的。草场质量的动态变化总的趋势是羊草、大针茅、冰草等禾本科优质牧草的比重逐年则菊科、蔷薇科和其他杂类草等饲用价值较低的牧草的比重逐年下降，草场质量有逐年提高的趋势。     

巴西草原大发现

最近,在对巴西中部塞拉多大草原进行的一次为期4周的探险中,科学家发现了14个新物种及多个濒急和罕见物种.这里介绍其中最具代表性的5个.     

Study on the Technology of Restoration and Giving a New Lease of Life to the Alpine Grassland Vegetation in the Construction of the Qinghai-Tibet Railway

This article gives a summary and analasis to experimental study on the restoration and giving a new lease of life to the alpine grassland vegetation along the Qinghai-Tibet Railway. Through on-the-spot investigation and vegetaion storation experimental study to the constructive fetching soil ground in Tuotuo River experiment section in the construction of the Qinghai-Tibet Railway, the result shows ： after the activities of the construction, soil conditions on the fetching soil ground have changed a lot, the soil quality has obviously degraded. In order to do well the vegetaton storation and reconstruction in the process of the construction of the Qinghai-Tibet Railway, the backfilling of the surface soil should really be done well. According to the result of on -the-spot experiment, the Elymus dahuricus Turcz and Poa annua Linn are all more suitable to the fetching soil environment on the alpine grassland, the plant can normally grow in the growing season. The timing selection of the vegetation should fully use feature of both rain and heat in the same season, thus can improve the percentage of success.     

金庸武侠小说草原大漠描写的跨文化眼光

金庸小说并不是局限在一种文化圈或特定地域本身来展开故事的，而往往是设有一个异质文化的参照系，以一种跨文化的视野，透视文化交流与撞击过程中人物性格的变化。并通过个体形象的方式使其观念具体化。表现在男性人物身上，是相对于中原的“涉入者”与“回归者”的差别；在女性人物身上则体现为，造成其爱情悲剧契机为主动的与被动的两种。造成这诸多变化的直接原因，是特定人物与特定环境之间的互动，究其根本则是农耕文明与游牧文明两种文化互渗互融的结果。     

丽斑麻蜥和草原沙蜥的种群调查

在兰州市郊区共捕获蜥蜴107只,其中丽斑麻蜥(Eremias argus)52只,草原沙蜥(Phrynocephalus frontalis)55只.其种群密度分别为丽斑麻蜥129只/hm2,草原沙蜥100只/hm2.2个种群划分为亚成体组和成体组后,平均吻肛长(SVL)丽斑麻蜥的亚成体组为34.2 mm,成体组为54.5 mm;草原沙蜥的亚成体组为35.4 mm,成体组为57.9 mm.种群性比(♀:♂)丽斑麻蜥为1∶1.07,草原沙蜥为1∶0.94,平均接近1∶1.调查结果表明:丽斑麻蜥和草原沙蜥2个种群的密度相差不大,二者的空间分布区域可以重叠,可以共处于同一生活环境中;丽斑麻蜥亚成体比草原沙蜥亚成体更生醒晚.蜥蜴体温主要受环境温度影响,通过行为调节来维持它们的正常生理机能.