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  • Received: May. 23, 2019

    Accepted: Mar. 20, 2020

    Posted: Oct. 17, 2020

    Published Online: Oct. 17, 2020

    The Author Email: TIAN Yuhong (tianyuhong@bnu.edu.cn)

    DOI: 10.5814/j.issn.1674-764x.2020.05.008

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    Yuhong TIAN, Fenghua LIU, Tiantian WANG. Spatial Distribution of Surface Soil Organic Carbon Density and Related Factors along an Urbanization Gradient in Beijing[J]. Journal of Resources and Ecology, 2020, 11(5): 508

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Journal of Resources and Ecology, Vol. 11, Issue 5, 508 (2020)

Spatial Distribution of Surface Soil Organic Carbon Density and Related Factors along an Urbanization Gradient in Beijing

TIAN Yuhong*, LIU Fenghua, and WANG Tiantian

Author Affiliations

  • State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China

Abstract

Urban surface soil has a unique set of structures and processes that affect surface soil organic carbon density (SOCdensity) and its spatial variations. Using Beijing as a case study, and assisted by field investigations and experiments, we analyzed the spatial distribution of SOCdensity in different land use types and functional regions, and assessed associated factors such as urbanization level, the physiochemical properties of soil and plant configurations. The present study aims to provide useful information about the mechanisms driving soil organic carbon and climate change in developing and developed areas in urbanized regions like Beijing. Results indicate that P is the main factor positively influencing SOCdensity in most regions. Because of the specific interference directly related to human beings in urban areas, with decreases in the urbanization level, more physiochemical factors of soil can influence SOCdensity. SOCdensity under grasses is not significantly different from that under other plant compositions. Urbanization processes decrease the heterogeneity of the spatial pattern of SOCdensity in most land use types, but increased its contents when the area reached a developed level in Beijing. More factors related to human interference and spatial variation of surface soil carbon storage, especially under impervious land in urban areas, should be considered in future studies.

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