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首页> 外文会议>International Conference on Mechanic Automation and Control Engineering >Soil erosion and pollutant loss of Danjiangkou city in south China based on 137Cs technique
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Soil erosion and pollutant loss of Danjiangkou city in south China based on 137Cs technique

机译：基于 137 CS技术的南方丹江口市土壤侵蚀与污染物损失

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Danjiangkou city is the main part of Danjiangkou reservoir area which is the catchments area for the South-to-North Water Transfer (middle line) project in China. Soil erosion and the subsequent pollutants loss are important influencing factors on its water quality. In this paper, soil erosion rate were analyzed based on 137Cs tracer technique, and the mathematic models were simulated among 137Cs contents and the organic matter, total phosphorus, heavy metals. The 137Cs reference inventory in the study area was 2153.46Bq m-2. Predicted soil erosion rates for different land use varied from 599.07 t km-2 year-1 to 6055.5 t km-2 year-1, the highest erosion rate was observed in dry land distributed on hilly areas, followed in sequence by cultivated slope land, kale yard land, paddy land and grassland. High correlation was apparent between 137Cs content and soil organic matters (R=0.721), soil Cu (R=0.751), soil Cr (R=0.886), soil Pb (R=0.799), soil Zn (R=0.756) and soil Ni (R=0.724), Low correlation was apparent between 137Cs contents and total phosphorus contents based on all the soil sample (R=0.297), but correlation coefficient are higher than 0.6 in the single land use area.
机译：丹江口市是丹江口水库区的主要部分，是中国南北水资源（中线）项目的集水区。土壤侵蚀和随后的污染物损失是其水质的重要影响因素。本文基于137CS示踪技术分析了土壤侵蚀率，并在137℃含量和有机物，总磷，重金属中模拟了数学模型。研究区的137CS参考库存为2153.46BQ M-2。预测不同土地使用的土壤侵蚀率不同于599.07 T KM-2年级-1至6055.5 T KM-2年级-1，在丘陵地区分布在丘陵地区的干旱地区，培育坡地序列中观察到最高的侵蚀率，羽衣甘蓝院子土地，稻田和草原。 137℃含量和土壤有机物质（r = 0.721），土壤Cu（r = 0.886），土壤锌（r = 0.799），土壤锌（r = 0.756）和土壤，土壤锌（r = 0.756）和土壤，高相关是明显的Ni（r = 0.724），基于所有土壤样品（r = 0.297）的137℃含量和总磷含量的低相关性在137℃含量和总磷含量之间，但在单地使用区域中的相关系数高于0.6。

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