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Liu, Zhi-hui
- Study on the Accumulated Temperature Distribution Model of Snowmelt Flood Magnitude from the Perspective of Ecological Environmental Protection of Mountain Areas
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Authors
Affiliations
1 School of Resources and Environment Science, Xinjiang University, Urumqi, 830046, CN
2 Key Laboratory of Oasis Ecology Ministry of Education, Xinjiang University, 830046, CN
3 Department of Earth & Environmental Studies, Montclair State University, Montclair, NJ, 07043, US
1 School of Resources and Environment Science, Xinjiang University, Urumqi, 830046, CN
2 Key Laboratory of Oasis Ecology Ministry of Education, Xinjiang University, 830046, CN
3 Department of Earth & Environmental Studies, Montclair State University, Montclair, NJ, 07043, US
Source
Nature Environment and Pollution Technology, Vol 14, No 3 (2015), Pagination: 517-524Abstract
Mountain flood that causes landslide and other geological disasters can damage the fragile ecological environment in mountain areas. In this paper, threshold and distribution model of accumulated temperature based on snowmelt flood magnitude are designed in mountainous watershed. Meanwhile, input data for this model make use of ample reliable data that include remote sensing and so on. In detail, this model simulates the average watershed temperature by using the meteorologic re-analysis data of the National Center for Atmospheric Research and calculates the average snow depth by using hyperspectral remote sensing data. In addition, the model related data comprise long-term observation experiments of the watershed, including the characteristics of accumulated snow and result of correlation between runoff and infiltration in runoff simulation experiment through distributed hydrological models (i.e., Soil and Water Assessment Tool and Distributed Hydrology Soil Vegetation Model). Finally, the average accumulated temperature of the watershed that causes snowmelt flood can be obtained through the aforementioned method, and the characteristics of the accumulated temperature distribution of the watershed area are determined based on the temperature lapse rate. The characteristics of accumulated temperature distribution can provide decision-making reference for monitoring the ecological environment in mountain areas and preventing and reducing disasters.Keywords
Inverse Hydrological Problem, Flood Magnitude, Cropland Environment, Accumulated Temperature, Distribution, Accumulated Temperature, Threshold.- Research on a New Physical Based Hydrological Model Applied in Ebinur Lake Basin in China
Abstract Views :156 |
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Authors
Affiliations
1 School of Resources and Environment Science, Xinjiang University, Urumqi 830054, CN
2 School of Computer Science and Technology, Xinjiang Normal University, Urumqi, 830054, CN
3 Institute of Ecology & Environment of Xinjiang University, Urumqi, Xinjiang 830046, CN
1 School of Resources and Environment Science, Xinjiang University, Urumqi 830054, CN
2 School of Computer Science and Technology, Xinjiang Normal University, Urumqi, 830054, CN
3 Institute of Ecology & Environment of Xinjiang University, Urumqi, Xinjiang 830046, CN
Source
Nature Environment and Pollution Technology, Vol 13, No 1 (2014), Pagination: 37-42Abstract
The physical based hydrologic model based on grid-scale for water resources management (WYJ) was applied into the Ebinur Lake basin in Xinjiang Province, China. Several physical parameters were considered in this model and calculated based on the physical properties by combination with GIS tools. We have considered the warm-up period in order to reduce the error accoused by the uncertainty produced from the physical model. After the calibration and validation of the model, the results showed that the model was able to simulating the basin hydrological processes with high efficiency especially in ground surface. The N-S efficiency coefficient was once exceeded 0.85 in simulation periods and R2 can also reach 0.92. We can draw a conclusion that this physical model can be applied into the Ebinur Lake basin and can provided for decision making for the government.Keywords
Water Resource Management, Hydrologic Model, GIS, Grid-Scale, Ebinur Lake Basin.- Optimization of MSW Collection Routing System to Reduce Fuel Consumption and Pollutant Emissions
Abstract Views :98 |
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Authors
Affiliations
1 Key Laboratory of Oasis Ecology Ministry of Education, Xinjiang University, Urumqi 830046, CN
2 School of Educational Science, Xinjiang Normal University, Urumqi, Xinjiang, 830054, CN
3 School of Resources and Environment Science, Xinjiang University, Urumqi 830046, CN
4 School of Computer Science and Technology, Xinjiang Normal University, Urumqi, 830054, CN
1 Key Laboratory of Oasis Ecology Ministry of Education, Xinjiang University, Urumqi 830046, CN
2 School of Educational Science, Xinjiang Normal University, Urumqi, Xinjiang, 830054, CN
3 School of Resources and Environment Science, Xinjiang University, Urumqi 830046, CN
4 School of Computer Science and Technology, Xinjiang Normal University, Urumqi, 830054, CN
Source
Nature Environment and Pollution Technology, Vol 13, No 1 (2014), Pagination: 177-184Abstract
With development of economy and modern socialization, the daily yield of household solid waste becomes a serious problem nowadays. To dispose of these solid wastes, people should collect the wastes and transport to municipal solid waste treatment plant to handle it. Usually, municipal solid waste (MSW) collection can account for more than 70% costs in the total MSW management system, and most of these costs are fuel costs. As we know, the emissions from vehicles contribute acid rain and global warming a lot in recent years. Therefore, it is necessary and urgent to find an optimal solution to reduce the emission and minimize the fuel consumption. By applying systems engineering methods, some models can be designed and modified to simulate the routes for collecting and transporting the MSW in the major urban area, in order to get an optimal solution which can achieve the goal of reducing fuel consumption from transportation and emission. In this study, an optimization for MSW collection routing using 3D GIS modeling is reviewed to get some new knowledge and idea. The main purpose of this study is to introduce a successful example and methodology which is used to optimize the MSW collection routing system, and design a model to find an optimal solution to minimize the fuel consumption and reduce the emissions in one area of St. John's, Newfoundland, by applying systems engineering methods.Keywords
Municipal Solid Waste, MSW Collection Routing, 3D GIS Model, Systems Engineering.- Study on Snowmelt Runoff Under Climate Change Effect in Tianshan Mountain in China
Abstract Views :179 |
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Authors
Affiliations
1 School of Resources and Environment Science, Xinjiang University, Urumqi 830046, CN
2 Jiang An Campus of Sichuan University, College of Architecture and Environment, Chengdu, 6102075, CN
3 Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, CN
4 Xinjiang Institute of Ecology and Geography, Chinese Academy of Science, Urumqi 830011, CN
5 LREIS, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, CN
1 School of Resources and Environment Science, Xinjiang University, Urumqi 830046, CN
2 Jiang An Campus of Sichuan University, College of Architecture and Environment, Chengdu, 6102075, CN
3 Key Laboratory of Oasis Ecology, Ministry of Education, Xinjiang University, Urumqi 830046, CN
4 Xinjiang Institute of Ecology and Geography, Chinese Academy of Science, Urumqi 830011, CN
5 LREIS, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, CN