关于黄土高原丘陵沟壑区植被地貌演化与土壤侵蚀的复杂响应研究现状及趋势

Research Progress of the Complex Response of Vegetation Topographic Evolvement and Soil Erosion in Hilly Areas of the Loess Plateau

对黄土高原丘陵沟壑区植被地貌演化与土壤侵蚀的复杂响应研究现状及趋势进行了系统分析。指出植被是影响生态环境质量的基本要素,且对土壤侵蚀与地貌演化具有重要的作用。针对目前黄土高原丘陵沟壑区植被分布现状,可以采用以空间代时间的研究方法对不同地貌特征、弃耕地的植被类型与群落特征进行调查。并运用人工降雨、径流场观测设施与野外观测资料与航片、地形图分析相结合,地貌演化与土壤侵蚀理论相交叉的研究方法,探讨植被自然演替规律、坡沟地貌演化与土壤侵蚀,坡沟地貌形态、水流特征对沟缘线地貌侵蚀演化的交互作用影响,揭示植被演替规律、坡沟地貌形态演化速率与土壤侵蚀的复杂影响机制。对于不断深化植被建设、地貌发育与土壤侵蚀理论的研究,为探索黄土高原植被建设、水土保持治理与决策提供科学依据,并具有重要的学术价值与实践意义。

The vegetation, which is the essential element in effecting ecological environment quality, is important to the soil erosion and topographic evolvement. Aiming at the problem of recent vegetation of Loess Plateau, The hilly areas of the Loess Plateau as the key study object are takeed.The research method of different spatial features replacing different temporal succession serial analysis is used, investigated the different topographic character, the vegetation type and community character of the abandoned land, and raked the combination of the manual rainfall, observing establishment and the analysis of the observed data out the door, the aerial imagine and the relief map, the combination of the topographic evolvement and soil erosion theory. It also discusses natural vegetation succession, slope donga topographic evolvement and soil erosion, the influence of gully edge topographic erosion evolvement by the slope donga topographic conformation and current character, as long as points out the vegetation succession law, the complex and influencing mechanism of the slope donga topographic evolvement speed and soil erosion. The study fruit of this article is significant to deepen the research of the vegetation construction, topographic growth and soil erosion theory. It also can provide scientific information on exploring vegetation construction in Loess Plateau and soil and water conservation governing and decision-making.