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With the rapid development of highway construction in China, the arid area of northwest China is one of the areas that w ill be exploited during the massive development of west china, especially with highway construction. But the water environment in this area have been over used for a long time due to highway construction. This paper on the analysis of the ecological loss of water environment of...
Chemical deicing salt was one of the main ways for highway snow shovel, but its effect on soil and environment around also was paid more and more attention in recent time. Based on filed sampling and indoor analysis, effect of chemical deicing salt application after big snow in 2008 on soil was analyzed, and its damages was evaluated. Results indicated that along the road area, on the site of K51,...
Based on cellular automata, this article proposes a new method of simulating changes in Chinese Northeastern agricultural landscape. This case study in Dehui, China illustrates that natural and human factors are the main drivers of landscape transition. The model is controlled macroscopically by natural and policy factors. A set of principles are generated derived from a former remote sensing data...
Based on the geomorphologic features and land use, the universal soil loss equation (USLE) and simple method were used to calculate and estimate the non-point source pollution from Nanchang University campus separately. The results show: the amount of soil erosion is 1352.161t/yr, the quantity of silt entering the lake is 270t/yr, and the chemical loads of TSS, TP, TN were 115.17t/yr, 0.27 t/yr, 1...
In order to make detailed analysis on the mechanical performance and load carrying capacity of cast-in-place bored pile with post grouting technique for highway bridges and study influence factors, FEM method has become one of the most essential assistant way. Based on two groups of trial pile in the same geological region of WEIHE bridge, which located at new airport construction project of Shaanxi...
Highway runoff is one of the important water resources in urban areas, though severe pollution has curbed its direct use. In this study, a soil infiltration system is proposed for treatment of highway runoff. Bench-scale experiments with different inflow concentrations and system operation modes (continuous/intermittent) have been designed to simulate the highly varied inflow rate and pollution load...
Selecting suitable features is very crucial for achieving successful classification of land cover types. This paper presents a comparative study of three typical feature selection methods for the task of regional land cover classification using MODIS data. Comparison results have shown that Branch and Bound is the best for land cover classification with MODIS data, while ReliefF and mRMR achieve nearly...
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