| The Tuowu wetland is 2503 to 2509 meters height above sea-level, closes to 108 national road. And what's more, it is an essential way to Tibet in south Sichuan. The existence of wetland plays an important role in the regulation of the climate and environment for the Pusa Gang area, which is also a beautiful view of the 108 State Road. Therefore, the Tuowu wetland has huge values in ecology, environment, economy and landscape.In this paper, we analysed the ecosystem of Tuowu wetland on the basis of the ecology theory and for the purpose of the health of the wetland system. The study includes three parts: firstly, analyzing the the condition of Tuowu wetland in order to ensure the type of the weltands, conditions and indicators for monitoring; secondly, research of the highway tunnel project in the alpine wetland ecosystem monitoring (including wetland hydrology, water quality study and the study on wetland vegetation); thirdly, research of landscape evaluation of this wetlands, as well as highway projects impact on the wetland landscape.On the basis of the theories summed up at home and abroad, we took investigations and analysis on the scene, collected and sort out the data, throughly analysed the water quality and the vegetations characteristic of Tuowu wetland.The results indicate that: 1) In the Wetland around Tuowu, the plant are 34 species, belonging to 20 families and 22 genera. Among them, only 1 species is pteridophyta. All the others are angiosperm. The two of biggest families are Cyperaceae and Juncaceae. They play a big part in the flora and vegetation of the wetland. And they are constructive species or dominant species of most of the communities.2) From the composition of wetland landscape, wetlands' landscape is very poor in the vertical because of almost all wetlands' plants are herbaceous plants. However, the composition of the wealth of plants and types of many wetland landscape also makes clear the characteristics of seasonal. 3) From the results of water quality analysis, three types of the ecosystems water's chemical indicators were not consistent the national standard value of water II when the highway tunnel project was construction in a year. Therefore, it can be seen that as a result of man-made causes, water quality was out of the standards. And the project had also affected the wetland ecosystem in the normal function4) From the wetland landscape value of evalution, in order to increase the value of wetland landscape, we should be to protect the existing wetland eco-systems to enrich and expand the wetland landscape area, and actively explore the potential of wetland functional elements of the landscape.5) Through the noise on the wetland on the wetland monitoring and measurement of economic indicators, highway tunnel project during the construction period did not result in significant wetlands impact of other factors.Creative point are so follows: First, from the ecosystem changes of this wetland in the characteristics indicators, vegetation, hydrology and other factors of the indicators had been analyzed during the construction period of the highway tunnel project; Second, the ecological characteristics of wetland was an important affecting factors, and took the characteristics of the ecosystem as the breakthrough point, analyzed the tunnel works on the visual impact of the wetlands.In this highly applicable and comprehensive study, aiming at the current status of landscape of the Wutuo Wetland, each of the monitoring indicators is took into fully account. At the same time, it is an important guide for implementing projects in Wetland, protection of the Wetland and the future development by using the Wetland landscape for tourism. |
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