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erosion data
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    Thirdly all of the environment data were used to overlay with the soil erosion data with grid size of 100 m*100 m. Finally, the statistics analysis function of the GIS is used to discover the relationship between the soil erosion and its environment factors.
    然后 ,利用 GIS的叠加统计分析功能 ,将这些数据与 1 0 0 m* 1 0 0 m格网大小的土壤侵蚀栅格 ( grid)数据进行叠加统计分析 ,从而揭示出了土壤侵蚀与这些环境因子之间的关系
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    Satellite remote sensing has become one of the important tools to survey land erosion. Take Zhungeer county as an example, depend on remote sensing images and other data, utilizing GIS software contained ARC/INFO and remote sensing software ERDAS, after disposition, transition of pattern and query, interpretation, the study achieve the soil erosion data of the area.
    以内蒙古准格尔旗为例 ,利用 TM图像及相关辅助数据 ,通过 GIS软件 ARC/INFO、遥感软件 ERDAS IMAGINE 8.5 ,对影像进行格式转换、人机交互解译等处理 ,得到准格尔旗土壤侵蚀的结果数据。
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  erosion data
A theoretical approach to the treatment of wind erosion data, particularly from a wind tunnel, is presented.
      
Microstructural spacing, which is a measure of the mean free path between both the grain boundaries and the carbides, was found to describe all of the erosion data.
      
Microstructural spacing, which is a measure of the mean free path between both the grain boundaries and the carbides, was found to describe all of the erosion data.
      
An analysis of the erosion data also indicated that oxidation of the eroding material and related effects on erosion were unimportant even at the highest test temperature of 763 K.
      
Quantitative erosion data in the form of Damage Threshold Velocity (DTV) curves can be obtained, giving the lower limit of damage to the material under study.
      
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In order to discover the relationship between the soil erosion status and its environment factors such as temperature, rainfall, vegetation index, topographic index, environment index, the analysis of the soil erosion under the different environment condition in Chongqing City is discussed here. Firstly, a soil erosion index is defined here to describe the heavy of soil erosion in per unit. Secondly, all of the environment data was rasterized into 100M*100M including topographic index, annual average temperature,...

In order to discover the relationship between the soil erosion status and its environment factors such as temperature, rainfall, vegetation index, topographic index, environment index, the analysis of the soil erosion under the different environment condition in Chongqing City is discussed here. Firstly, a soil erosion index is defined here to describe the heavy of soil erosion in per unit. Secondly, all of the environment data was rasterized into 100M*100M including topographic index, annual average temperature, accumulating temperatures above zero and ten degree, annual rainfall, aridity, humidity, hot index, water index, hot and water index, environment quality comprehensive index. Thirdly all of the environment data were used to overlay with the soil erosion data with grid size of 100 m*100 m. Finally, the statistics analysis function of the GIS is used to discover the relationship between the soil erosion and its environment factors.

为了探讨土壤侵蚀与温度、降雨量、植被指数、地形指数、水热指数和环境质量综合指数的关系 ,本文对重庆市不同环境条件下的土壤侵蚀进行了分析。在定义土壤侵蚀综合指数的基础上 ,将年平均温度、大于 0°积温 ,大于 1 0°积温 ,年降雨量 ,干燥度、湿润度 ,地形综合指数、植被指数、热量指数、水分指数 ,水热指数 ,和环境质量综合指数等分级数据统一成格网大小为 1 0 0 m* 1 0 0 m的栅格 ( grid)数据。然后 ,利用 GIS的叠加统计分析功能 ,将这些数据与 1 0 0 m* 1 0 0 m格网大小的土壤侵蚀栅格 ( grid)数据进行叠加统计分析 ,从而揭示出了土壤侵蚀与这些环境因子之间的关系

Satellite remote sensing has become one of the important tools to survey land erosion. Take Zhungeer county as an example, depend on remote sensing images and other data, utilizing GIS software contained ARC/INFO and remote sensing software ERDAS, after disposition, transition of pattern and query, interpretation, the study achieve the soil erosion data of the area. The result shows that in Zhungeer county the hydraulic and eolian soil erosion of is serious and the hydraulic soil erosion is...

Satellite remote sensing has become one of the important tools to survey land erosion. Take Zhungeer county as an example, depend on remote sensing images and other data, utilizing GIS software contained ARC/INFO and remote sensing software ERDAS, after disposition, transition of pattern and query, interpretation, the study achieve the soil erosion data of the area. The result shows that in Zhungeer county the hydraulic and eolian soil erosion of is serious and the hydraulic soil erosion is dominant. Waterpower and wind power erosion accounting for 68.39% and 48.45% respectively. So constructing protective forest and returning land for farming to forest and grass are the key measures to prevent soil erosion.

以内蒙古准格尔旗为例 ,利用 TM图像及相关辅助数据 ,通过 GIS软件 ARC/INFO、遥感软件 ERDAS IMAGINE 8.5 ,对影像进行格式转换、人机交互解译等处理 ,得到准格尔旗土壤侵蚀的结果数据。结果表明 ,准格尔旗风力侵蚀 ,水力侵蚀总体上仍比较严重 ,且以水力侵蚀为主。水力侵蚀与风力侵蚀强度侵蚀以上所占比例分别为 68.39%和 48.45 %。

It is a routine practice to use the gray system theory to prognosticate the erosion data. In this paper, a BP neural network model is proposed for the study of erodent property and operational life span in detail. The results used with this model were compared with those obtained from the gray system theory and regression model and indicated that the BP neural network model is, to a certain extent, rational.

通常使用灰色系统理论的方法对材料腐蚀数据进行拟合预测,为了深入研究材料的腐蚀特性和使用寿命,提出了材料腐蚀数据预测的神经网络模型。并将预测结果与灰色系统理论、回归模型等方法的预测结果对比,表明利用神经网络模型方法对材料腐蚀数据进行拟合预测具有一定的合理性,指出了进一步的研究方向。

 
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