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15 results on '"Kang, Dejun"'

9. Temporal changes in fractions and loading of sediment nitrogen during the holistic growth period of Phragmites australis in littoral Lake Chaohu, China*

Author

Ding Hong, Wang Lehao, Kang Dejun, Zheng XiangZhou, Zhang Yushu, Cai Yuansong, Zheng Gongyi, Zhong Jicheng, Yu Juhua, and Guo Baoling

Subjects
Hydrology, Sediment, chemistry.chemical_element, Aquatic Science, Pollution, Nitrogen, Phragmites, chemistry, Earth and Planetary Sciences (miscellaneous), Period (geology), Littoral zone, Environmental science, China, Water Science and Technology
Published
2021

10. Characteristics and significance of nitrogen, phosphorus and oxygen transportation at the sediment-water interface in east Lake Chaohu

Author

LI Yunben, Shen Qiushi, Kuang Shuai, Wang Zhenyu, Kang Dejun, and Wang Yadong

Subjects
010504 meteorology & atmospheric sciences, Earth and Planetary Sciences (miscellaneous), 010501 environmental sciences, Aquatic Science, 01 natural sciences, Pollution, 0105 earth and related environmental sciences, Water Science and Technology
Abstract

以东巢湖近城市湖湾沉积物为研究对象，在沉积物氮、磷营养盐分析的基础上，采用沉积物柱状芯样静态释放模拟法定量评估研究区域沉积物-水界面氨氮、溶解性活性磷酸盐营养盐释放潜力，利用微电极非损伤测定技术获得沉积物-水微界面溶解氧（DO）剖面分布及微界面DO消耗和扩散特征.结果表明：东巢湖近城市湖湾沉积物氮、磷污染物蓄积量较高，受TN、TP污染程度较重.沉积物内源氨氮、磷酸盐释放明显，平均释放速率分别达到32.44 mg/（m2·d）和1.25 mg/（m2·d），区域内沉积物已成为水柱中氮、磷营养盐的污染源.研究区域上覆水体处于好氧状态，沉积物-水微界面平均DO穿透深度（OPD）达到5.3 mm，平均DO扩散通量为4.56 mmol/（m2·d），表现出良好的DO扩散能力.沉积物内源氨氮和磷酸盐释放能力与表层沉积物TN/TP物质含量及沉积物-水微界面DO穿透深度有关，在沉积物氮、磷污染较重的情况下，DO穿透深度越低越有利于氮、磷污染物从沉积物向上覆水体释放.

Published
2020

11. Distribution patterns and ecological risk assessment of heavy metal contamination in surface sediments deposited in a typical small sized water reservoir

Author

Kang Dejun, Shen Qiushi, Wang Kai, Zhang Lu, Kuang Shuai, Bao Qibei, and Liu Cheng

Subjects
021110 strategic, defence & security studies, Metal contamination, business.industry, 0211 other engineering and technologies, Distribution (economics), Soil science, 02 engineering and technology, 010501 environmental sciences, Aquatic Science, 01 natural sciences, Pollution, Water reservoir, Earth and Planetary Sciences (miscellaneous), Environmental science, Ecological risk, business, 0105 earth and related environmental sciences, Water Science and Technology
Published
2018

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