内蒙地区高等级公路生态边坡问题探讨

根据内蒙古干旱地区高等级公路建设中边坡的形态特点和变形破坏形式,考虑到特殊的地理气候因素,与传统边坡治理比较后,提出使用生态法进行边坡保护,来达到以最少的人为破坏实现边坡稳定的目标。并探讨了生态边坡稳定中,植物发挥其积极作用的力学及水文学效应,以及植物起到的消极作用。最后指出内蒙干旱地区生态边坡建设,应当多采用耐干旱的草和灌木,寻找适合当地气候的植物和工程手段,积极推进生态边坡稳定性问题的定量化研究来为西部环境生态保护服务。

水资源的稀缺性和内蒙古可持续发展研究

内蒙古资源型经济发展完全依赖丰富的自然资源。尤其是呼和浩特市、包头市、鄂尔多斯市构成的"内蒙古经济金三角"地区的发展都很大程度上依靠煤炭、钢铁、天然气等自然资源的禀赋。但是,经济高速发展的反面,我们越来越感觉到水资源危机日益接近现实生活。因为为了维持经济高速发展和确保水资源安全,我们付出的代价越来越大。本论文以中国水资源概况的宏观框架之下,利用循环经济理论分析了内蒙古水资源问题及特点,为实现可持续发展目标,提出根本的理论指导建议。

Above-ground Biomass Allocation in a Planted Forest in a Semi-arid Region of Northern Mongolia

Investigation of the above-ground biomass allocation patterns on Scots pine plantations is critical for quantifying the productivity and carbon cycle of forest ecosystems. We estimated above-ground biomass and net primary production of a 25-year-old Pinus sylvestris L. （Scots pine） plantation, in a semi-arid region of Mongolia. The above-ground biomass of sample trees was divided into stem wood, stem bark, live branches, dead branches and needles. Total biomass for the stand was only 18.03 Mg ha1, of which 47.6% was found in stem wood, 25.8% in live branches and 14.8% in needles. The growth rate of the Scots pine plantation in the study region was relatively low compared with other regions. In the study area, it was observed that the rate of biomass accumulation in the plantation was very slow; this can be explained by very limited growing conditions and intensive crown closure. The results from this study indicate that it may be necessary to carry out thinning to increase biomass production by reducing competition between trees in the Scotch pine plantation.