Study On The Effects Of Global Climate Change On Species Distribution-Stipa Distribution In Northeast China

The distribution areas and growth period of species have been affected through thegloble climate change. We intend to make predections of the growth period and distributionarea of the Stipa species in northeast region of China. Hierarchical clustering is mainly usedin this process, as well as rigorous statistical processing and analysis methods. The researchstudies are as follows:In the introduction part, we maily review the research status of Stipa distribution and thecorresponding influence factors at home and abroad. Then the influence of climate change onterrestrial ecosystems is discussed and the exsisting problems are also put forward in the end.In chapter two, mathematical models are used to analyze the clustering structure of theclimate data of Stipa species distribution region in the Northeast from1981to1990. As aresult, we analyze the growth period of Stipa with known climate data.Chapter three analyzes climate factors step by step. Under the climate change, Stipaspecies can set up stochastic mathematical model by using some knowledge of statistics anddata processing related. Importantly, the prediction map drawed out by using an appropriatemodel. In this chapter, the distribution of Stipa species under climate change in the future areeventually predicted with the algorithm in this part.Chapter four introduces the Gauss principle of competition into the algorithm and asaresult, various species of Stipa’s competition region under climate chang is predicted.In the fifth chapter, further summaries of previous research are disscussed and theultimate conclusions are drawn. In the fifth chapter, further general conclusions are givenaccording to previously discuss.