《酸雨对中国南方地区的影响》魔法香蕉nanb

6、Discuission

　　5.1.The Public\'s Perception Of Acid Rain
　　Through the questionnaire survey completed by the respondents combined with their environment-related knowledge and understanding of the ecological environment in southern China, the following conclusions can be analyzed: first, acid rain will cause different degrees of direct harm to land resources, water resources and biological resources, and the respondents generally believe that acid rain will directly harm the soil more; Secondly, land resources, water resources, and climate resources will be polluted by acid rain to harm other resources again, and land resources are also considered to be easier to harm other resources twice, and biological resources are also considered to be more vulnerable to secondary hazards.
　　5.2.Complex network analyze
　　Combined with the literature reading and analysis of related topics, because of the special sulfur-containing coal resources acid rain in southern China is mainly sulfuric acid rain, which is corrosive, exists for longer time and is not easy to be absorbed by soil and water, organisms, which will lead to rapid acidification of soil and water, and this acid rain will also produce toxic gas SO2 to harm human health. Specifically, in terms of land resources, acid rain directly corrodes vegetation and acidifies soils, further leading to reduced crop yields and the decline of forests and grasslands. In terms of water resources, acid rain will lead to acidification of lakes, rivers and other water bodies, further endangering biological resources. In terms of biological resources, acid rain will directly corrode the skin of animals , plants and human bodies, will also endanger the health of plants and fish through soil and water acidification. In terms of climate resources, acid rain produces SO2 and which leads to diseases such as pinkeye and bronchitis. In terms of buildings, acid rain directly corrodes concrete and metal buildings.
　　The above analysis conclusion is shown in the figure, the circles in the figure represent the direct impact of acid rain, and the arrows represent the interaction among these objects.

　　Figure 5. Ecosystem complex network
　　The preceding diagram provides a visual representation of which objects are more affected and which objects are more likely to affect other objects. Analyzing the impact network of acid rain on the ecological environment by complex network method shows that the sulfuric acid rain in southern China has the greatest direct damage to land and water resources, and biological resources are the most vulnerable to the harm of acid rain. The prevention and control of these affected objects can be strengthened.