古尔班通古特沙漠南缘固沙植被斑块格局对降水脉动的响应研究

项目名称： 古尔班通古特沙漠南缘固沙植被斑块格局对降水脉动的响应研究

项目编号： No.41301205

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 天文学、地球科学

项目作者： 王新军

作者单位： 新疆农业大学

项目金额： 26万元

中文摘要： 沙漠固沙植被斑块格局对降水响应机制认识的薄弱已经成为恢复、稳定沙漠固沙植被生态系统的瓶颈。这种薄弱不仅表现在对沙漠生态系统研究积累不足，而且表现在理论和方法上仍处于探索阶段。在干旱区沙漠化的背景下，以古尔班通古沙漠（古漠）南缘固沙植被斑块格局为研究对象，采用控制试验、样带调查、遥感反演和数值模拟的方法，阐述降水脉动规律特征，解析土壤水在陆面再分配规律，揭示土壤水与固沙植被斑块空间格局及其分异规律，分析土壤水对个体、群落和植被斑块格局特征的影响且进行参数化表达，结合固沙植被格局时空变化特征，探讨固沙植被斑块格局对降水脉动响应的机理和过程。开展本项研究将增加国内固沙植被斑块格局和过程对降水响应机制方面积累，以期为干旱区的固沙植被恢复和生态重建及管理提供可靠的理论依据。

中文关键词： 固沙植被格局；降水；景观格局；遥感监测；古尔班通古特沙漠

英文摘要： One challenge facing recovering and stabilizing sand-binding vegetation eco-system is that the understanding of mechanism on precipitation response to vegetation patches pattern in the desert is still weak. Not only is it showed up as deficient accumulation of desert ecosystem research, but also expresses as the theory and method are in the exploration stage. Under the background of desertification in arid region, the project considers sand-binding vegetation patch pattern as the study materials, and employs means of controlled test, belt-transects investigation, remote sensing inversion and numerical simulation, aiming at revealing the distribution rules of stabilizing sand-binding vegetation patches and soil water, elaborating precipitation impulse rules, resolving redistribution rules of soil water on the land surface, analyzing the influences of soil water on individual, community and patch pattern of vegetation, as well as describing the influencing relationship by parameters. We plan to analyze temporal and spatial changing characteristics and to discuss the mechanism on response of sand-binding vegetation patch pattern to precipitation impulse and the process. To carry out this study will increase research accumulation on mechanisms about response of sand-binding vegetation patch pattern to precipitation

英文关键词： Sand - binding vegetation Pattern；precipitation；landscape pattern；Remote sensing monitoring；Gurbantonggut Desert