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2篇 您的检索式:作者名="Fangbing MA"
    题名 作者 年代 出处 被引量
1A Bayesian method for comprehensive water quality evaluation of the Danjiangkou Reservoir water source area, for the middle route of the South-to-North Water Diversion Project in China显示文摘Danjiangkou 水库是为在中国的 South-to-North 水转向工程的中间的线路的水来源。因此,它的水质量地位担心大。五水质量指示物(溶解的氧,高锰酸盐索引,氨氮,全部的氮,和全部的磷),在三点被测量监视地点( Danjiangkou 水库水坝, Hejiawan 和 Jiangbei 桥),调查变化趋势,并且在到2012年5月的从2006年1月的 Danjiangkou 水库区域的水质量的空间与时间的特征。我们然后使用了一个贝叶斯的统计方法包括地评估水质量。正常分发采样方法被用来计算可能性的,并且熵重量方法被用来为对的兴趣的变量决定指示物重量到学习。结果显示所有五指示物的集中在最后六年期间增加了。另外,在水库的水质量在湿季节期间是更坏的(从 5 月到 10 月) ,比在旱季期间(从 11 月到下一年的 4 月) 。总的来说,水的概率根据为在中国的表面水的环境优秀标准,属于类型 II 的优秀范畴是 27.7%-33.7% ,比它属于另外的四种水质量类型的大。营养素的增加的集中能导致 Danjiangkou 水库的超营养作用。这个方法减少了通常与决定指示物重量和人工的分类被联系的主观,完成更可靠的结果。这些结果显示 interbasin 水转向工程在 Danjiangkou 水库区域实现综合的水质量管理是重要的[出版摘要]Fangbing MA Chunhui LI Xuan WANG Zhifeng YANG Chengchun SUN Peiyu LIANG 2014Frontiers of Earth Science2014,8,2:14
2Marine Carbon-Sulfur Biogeochemical Cycles during the Steptoean Positive Carbon Isotope Excursion(SPICE) in the Jiangnan Basin, South China显示文摘Global occurrences of Steptoean Positive Carbon Isotope Excursion(SPICE) during Late Cambrian recorded a significant perturbation in marine carbon cycle, and might have had profound impacts on the biological evolution. In previous studies, SPICE has been reported from the Jiangnan slope belt in South China. To evaluate the bathymetric extent of SPICE, we investigate the limestone samples from the upper Qingxi Formation in the Shaijiang Section in the Jiangnan Basin. Our results show the positive excursions for both carbonate carbon(δ^(13)C) and organic carbon(δ^(13)C_(org)) isotopes, as well as the concurrent positive shifts in sulfur isotopes of carbonate associated sulfate(CAS, δ^(34)S_(CAS)) and pyrite(δ^(34)S_(pyrite)), unequivocally indicating the presence of SPICE in the Jiangnan Basin. A 4‰ increase in δ^(13)C_(carb) of the Qingxi limestone implies the increase of the relative flux of organic carbon burial by a factor of two. Concurrent positive excursions in δ^(34)S_(CAS) and δ^(34)S_(pyrite) have been attributed to the enhanced pyrite burial in oceans with extremely low concentration and spatially heterogeneous isotopic composition of seawater sulfate. Here, we propose that the seawater sulfur isotopic heterogeneity can be generated by volatile organic sulfur compound(VOSC, such as methanethiol and dimethyl sulfide) formation in sulfidic continental margins that were widespread during SPICE. Emission of 32S-enriched VOSC in atmosphere, followed by lateral transportation and aerobic oxidation in atmosphere, and precipitation in open oceans result in a net flux of ^(32)S from continental margins to open oceans, elevating δ^(34)S of seawater sulfate in continental margins. A simple box model indicates that about 35% to 75% of seawater sulfate in continental margins needs to be transported to open oceans via VOSC formation.Yang Peng Yongbo Peng Xianguo Lang Haoran Ma Kangjun Huang Fangbing Li Bing Shen 2016Journal of Earth Science2016,27,2:5
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