Effects of Natural Gas Exploitation Projects on Soil Erosion and Nutrient Composition in Different Landforms——A Case Study of Sichuan Province
In this paper,natural gas exploitation blocks with different geological and geomorphological character-istics in Sichuan region are selected to study the trend of ecological function restoration in each project area after the completion of different construction techniques for natural gas exploitation.The soil loss and soil nutrients in different geomorphologic types and engineering areas are analyzed.The methods used are spot sampling experi-ment and tracking observation.The results show that the proportion of new soil loss is the largest in the pipeline engineering area,and the amount of new soil loss is more than 50%in the station yard and valve chamber engi-neering area.The restoration time of vegetation in different landforms and regions is from 4 to 6 years.The con-clusion is that the influence of the current pipeline engineering area on the soil index is greater than that of the spot station and yard engineering area.
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