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不同淋洗条件下黄河三角洲盐渍土脱盐规律研究 期刊论文
灌溉排水学报, 2019, 卷号: 000, 期号: 003, 页码: 76-82
作者:  尹春艳;  陈小兵;  刘虎;  秦松;  孙海栓;  张立宾
Adobe PDF(2220Kb)  |  收藏  |  浏览/下载：369/39  |  提交时间：2021/06/16
盐渍土  土柱模拟  间歇淋洗  矿化度  脱盐效率  
烟台夹河口外柱状沉积物还原性无机硫、活性铁的变化特征及其相互关系 期刊论文
海洋科学, 2018, 卷号: 42, 期号: 8, 页码: 90-97
作者:  姜明;  赵国强;  李兆冉;  盛彦清
浏览  |  Adobe PDF(1528Kb)  |  收藏  |  浏览/下载：582/249  |  提交时间：2020/07/08
还原性无机硫  活性铁  深层柱状沉积物  硫化度  矿化度  Reduced inorganic sulfur  Reactive iron  Deep core sediments  Degree of pyritization  Degree of sulfidity  The distribution characteristics and coupling mechanism of reduced inorganic sulfur (RIS)and reactive iron in marine core sediments are closely related to the evolution of environment quality.In this study,an improved cold diffusion method and hydrochloric acid extraction method were applied to the acid-volatile sulfur (AVS),pyrite sulfur (CRS),elemental sulfur (ES),and reactive iron [Fe (Ⅱ)and Fe (III)] analyses.The distribution characteristics and coupling mechanism of S and Fe were investigated based on a core sediment 4 meters deep collected in the northern sea area of the mouth of Jiahe River,Yantai.The results showed that the RIS in sediments was dominated by CRS,followed by AVS and ES.The content of AVS presented a narrow range with depth,whereas the CRS and ES were higher at the top and bottom layers than the middle layer  reactive iron was dominated by Fe (II),which increased with depth,while Fe (Ⅲ)gradually decreased with depth.Most of the Fe (III)was reduced to the disssolved Fe(II),which was combined with the soluble H_2S of the sulfate-reducing bacteria to produce CRS and ES in the deep layer,resulting in their accumulation at the bottom of core sediments.Furthermore,this study showed that reactive iron was not a limiting factor for the accumulation of RIS with lower degree of pyritization and degree of sulfidity.  
苏北海涂典型围垦区土壤盐渍化风险评估研究 期刊论文
中国生态农业学报  , 2009, 卷号: 18, 期号: 5, 页码: 1000-1006
姚荣江; 杨劲松; 陈小兵; 余世鹏; 李晓明
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苏北  海涂  盐渍土壤改良  盐渍化风险  风险评估  土壤盐分  土壤容重  地下水矿化度