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Migration and leaching characteristics of base cation: indicating environmental effects on soil alkalinity in a karst area
Mingzhen Ma;  Yang Gao;  Xianwei Song;  Sophie M. Green;  Bailian Xiong;  Jennifer A. J. Dungait;  Tao Peng;  Timothy A. Quine;  Xuefa Wen;  Nianpeng He
2018
Source PublicationEnvironmental Science and Pollution Research
Volume25Issue:21Pages:20899-20910
Abstract

In karst areas, rock dissolution often results in the development of underground networks, which act as subterranean pathways for rapid water and nutrient (and possibly soil) loss during precipitation events. Loss of soluble nutrients degrades surface soils and decreases net primary productivity, so it is important to establish flow pathways and quantify nutrient loss during rainfall events of different magnitudes. We conducted a simulated rainfall experiment in karst and nonkarst areas to compare the concentration of nutrients in surface and subsurface flow water and effects on soil alkalinity in three lithologic soil formations under five different rainfall intensity treatments. Compared with the nonkarst area, the runoff in subsurface flows and the proportion of nutrient loss in the subsurface flow are larger in the karst area and less affected by rain intensity. The maximum loss loads of calcium (Ca2+) and magnesium (Mg2+) ions were 32.9 and 19.8 kg ha(-1), respectively. With the estimate of base cation loss loads in the China southern karst area under the rainfall intensity of 45 mm h(-1), more than 80% of the base cation loss load occurred in the limestone karst area. Although the alkalinity leaching value in nonkarst was similar to that in the karst area under simulated rainfall conditions, its impact on the ecological environment was quite different.

KeywordKarst Lithologic Simulated Rainfall Base Cations Soil Degradation Solute Transport
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8826
Collection环境地球化学国家重点实验室
Affiliation1.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, People’s Republic of China
2.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
3.Geography, Amory Building, University of Exeter, Rennes Drive, Exeter EX4 4RJ, UK
4.College of Resources and Environment, Zunyi Normal College, Zunyi 563002, People’s Republic of China
5.Department of Sustainable Soils and Grassland Systems, Rothamsted Research, North Wyke, Okehampton EX20 2SB, UK
6.State Key Laboratory of Geochemistry, Geochemistry Institute of CAS, Guiyang, Guizhou 550002, People’s Republic of China
Recommended Citation
GB/T 7714
Mingzhen Ma;Yang Gao;Xianwei Song;Sophie M. Green;Bailian Xiong;Jennifer A. J. Dungait;Tao Peng;Timothy A. Quine;Xuefa Wen;Nianpeng He. Migration and leaching characteristics of base cation: indicating environmental effects on soil alkalinity in a karst area[J]. Environmental Science and Pollution Research,2018,25(21):20899-20910.
APA Mingzhen Ma;Yang Gao;Xianwei Song;Sophie M. Green;Bailian Xiong;Jennifer A. J. Dungait;Tao Peng;Timothy A. Quine;Xuefa Wen;Nianpeng He.(2018).Migration and leaching characteristics of base cation: indicating environmental effects on soil alkalinity in a karst area.Environmental Science and Pollution Research,25(21),20899-20910.
MLA Mingzhen Ma;Yang Gao;Xianwei Song;Sophie M. Green;Bailian Xiong;Jennifer A. J. Dungait;Tao Peng;Timothy A. Quine;Xuefa Wen;Nianpeng He."Migration and leaching characteristics of base cation: indicating environmental effects on soil alkalinity in a karst area".Environmental Science and Pollution Research 25.21(2018):20899-20910.
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