[Estimation of the effect derived from wind erosion of soil and dust emission in Tianjin suburbs on the central district based on WEPS model].
[Estimation of the effect derived from wind erosion of soil and dust emission in Tianjin suburbs on the central district based on WEPS model].
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发表时间：
2012-07
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通讯作者：
Li Chen;Ting-Ting Han-Ting;Tao Li;Yaqin Ji;Z. Bai;Bin Wang
中科院分区：
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作者：
Li Chen;Ting-Ting Han-Ting;Tao Li;Yaqin Ji;Z. Bai;Bin Wang
由于我国目前缺乏风蚀预测模型且发展缓慢，本研究借鉴美国风蚀预测系统（WEPS），通过研究典型地区风蚀预测模型的结构、参数系统以及参数系统之间的关系，对土壤风蚀和扬尘排放进行预测，建立天津市风蚀预测模型。基于遥感技术和试验数据，建立了风蚀扬尘预测模型参数体系，建立了适合天津市风蚀扬尘预测的模型。将天津市划分为11 080个分辨率为1×1 km2的区块，其中选取了7 778个扬尘区块。本地化了区块的参数，包括经度、纬度、高程和方向等。本地化了区块的数据库文件，包括风文件、气候文件、土壤文件和管理文件。哭泣。运行文件已编辑。基于Microsoft Visualstudio 2008，采用C++语言进行二次开发，估算了7 778个块体的粉尘通量，包括蠕变和跃迁通量、悬浮通量和PM10通量。基于内蒙古风洞实验参数、天津郊区土壤测量数据和气候数据，计算了天津郊区四个季节和全年的风蚀模数、风蚀通量、扬尘释放模数和扬尘通量。 2009年，天津市郊区总蠕变跃迁通量、悬浮通量和PM10通量分别为2.54×10(6)t、1.25×10(7)t和9.04×10(5)t，其中指向中心区的部分分别为5.61×10(5)t、2.89×10(5)t。分别为 10(6) t 和 2.03 x 10(5) t。
Due to the lack of a prediction model for current wind erosion in China and the slow development for such models, this study aims to predict the wind erosion of soil and the dust emission and develop a prediction model for wind erosion in Tianjin by investigating the structure, parameter systems and the relationships among the parameter systems of the prediction models for wind erosion in typical areas, using the U.S. wind erosion prediction system (WEPS) as reference. Based on the remote sensing technique and the test data, a parameter system was established for the prediction model of wind erosion and dust emission, and a model was developed that was suitable for the prediction of wind erosion and dust emission in Tianjin. Tianjin was divided into 11 080 blocks with a resolution of 1 x 1 km2, among which 7 778 dust emitting blocks were selected. The parameters of the blocks were localized, including longitude, latitude, elevation and direction, etc.. The database files of blocks were localized, including wind file, climate file, soil file and management file. The weps. run file was edited. Based on Microsoft Visualstudio 2008, secondary development was done using C + + language, and the dust fluxes of 7 778 blocks were estimated, including creep and saltation fluxes, suspension fluxes and PM10 fluxes. Based on the parameters of wind tunnel experiments in Inner Mongolia, the soil measurement data and climate data in suburbs of Tianjin, the wind erosion module, wind erosion fluxes, dust emission release modulus and dust release fluxes were calculated for the four seasons and the whole year in suburbs of Tianjin. In 2009, the total creep and saltation fluxes, suspension fluxes and PM10 fluxes in the suburbs of Tianjin were 2.54 x 10(6) t, 1.25 x 10(7) t and 9.04 x 10(5) t, respectively, among which, the parts pointing to the central district were 5.61 x 10(5) t, 2.89 x 10(6) t and 2.03 x 10(5) t, respectively.