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Patterns and influencing factors of spatio-temporal variability of soil organic carbon in karst catchment
Zhenming Zhang;  Yunchao Zhou;  Shijie Wang;  Xianfei Huang
2019
Source PublicationInternational Journal of Global Warming
Volume17Issue:1Pages:89-107
Abstract

The patterns of spatio-temporal variability of the soil organic carbon (SOC) stored in karst catchment were investigated, to provide a scientific basis for estimating SOC storage in karst regions and selecting technical measures for soil carbon sequestration. In this paper, field sampling, laboratory measurement, geostatistics, and geographic information system (GIS) were combined, to investigate the patterns and influencing factors of SOC’s spatio-temporal variability in Houzhai catchment from 1980 to 2015. The results showed that according to the soil samples of the entire catchment, the SOC content averaged 21.98 g/kg in 1980 and 25.07 g/kg in 2015, with an increase of 3.09 g.kg–1 (14.58%). Over the three and a half decades, SOC in this region showed weakened spatial structure, reduced correlation, and broken spatial distribution. Moreover, SOC in both periods presented a pattern of high values in the east and low values in the west, high in the periphery and low in the centre, and high in the south and low in the north. However, some local values were highly variable in embedded or block distribution. The key factors that could affect spatio-temporal variability of SOC in Houzhai catchment included the soil types, land utilisation, and major environmental factors.

KeywordSoil Organic Carbon Soc Temporal And Spatial Distribution Influencing Factors Small Watershed Karst
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/10941
Collection环境地球化学国家重点实验室
Affiliation1.Institute for Forest Resources and Environment of Guizhou, Guizhou University, Guiyang, 550025, China
2.Guizhou Institute of Biology, Guiyang, 550001, China
3.College of Forestry, Guizhou University, Guiyang, 550001, China
4.Puding Karst Ecosystem Research Station of Guizhou Province, Anshun, 561000, China
5.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Science, Guiyang, 550002, China
6.Guizhou Provincial Key Laboratory for Environment, Guizhou Normal University, Guiyang, 550001, China
Recommended Citation
GB/T 7714
Zhenming Zhang;Yunchao Zhou;Shijie Wang;Xianfei Huang. Patterns and influencing factors of spatio-temporal variability of soil organic carbon in karst catchment[J]. International Journal of Global Warming,2019,17(1):89-107.
APA Zhenming Zhang;Yunchao Zhou;Shijie Wang;Xianfei Huang.(2019).Patterns and influencing factors of spatio-temporal variability of soil organic carbon in karst catchment.International Journal of Global Warming,17(1),89-107.
MLA Zhenming Zhang;Yunchao Zhou;Shijie Wang;Xianfei Huang."Patterns and influencing factors of spatio-temporal variability of soil organic carbon in karst catchment".International Journal of Global Warming 17.1(2019):89-107.
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