关键词: 雷竹林, 潜在生态风险指数, 单因子污染指数, 内梅罗综合污染指数

Abstract: Qinling Mountains is one of the key areas of ecological conservation in China. As an important part of the Qinling Mountains, the northern foot of the Qinling Mountains (Xi’an section) is related to the ecological environment and economic development quality of Xi’an City. The special location, over exploitation of mineral resources, illegal construction of private villas, free discharge of domestic waste,  have led to a series of soil pollution problems, with serious environmental damage in the northern foot of Qinling Mountains. In view of the ecological problems such as diverse pollution types and varying pollution levels in the northern foot of Qinling Mountains, it is necessary to use remote sensing monitoring to carry out indepth investigation, with the aim to promote the restoration and evaluation of contaminated land and realize the rational utilization of land resources and further improvement of soil quality. According to different soil properties and pollution conditions, physicochemical, biological and new soil remediation techniques are used to establish effective remediation system in the aspects of pollution source and pollution degree, and to carry out longterm dynamic monitoring. In addition, through land science and technology innovation, the research in microbes and trace elements, the theoretical study of land science and engineering, we will establish ecological protection standard system and ecological redline in the northern root of Qinling Mountains, which will help the government to be selfregulated and improved, thus realizing the land resource classification management, soil quality improvement, and environment management optimization and providing guidance and operable strategies for ecological restoration in the northern foot of Qinling Mountains.

Key words: Hyllostachys praecox, potential ecological risk index, single factor pollution index, Nemerow integrated pollution index.