Effect of land use change on soil organic carbon pool in process of urbanization: a case study of Sanlin Green Wedge, Shanghai

doi:10.3969/j.issn.1004-1524.2021.06.11

Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (6): 1062-1068.DOI: 10.3969/j.issn.1004-1524.2021.06.11

• Environmental Science • Previous Articles Next Articles

Effect of land use change on soil organic carbon pool in process of urbanization: a case study of Sanlin Green Wedge, Shanghai

ZHANG Qingqing¹^,²(), LIANG Jing¹^,²^,^*(), WU Haibing¹^,², ZHENG Sijun¹^,², HUANG Junhua¹^,²

1. Shanghai Academy of Landscape Architecture Science and Planning, Shanghai 200232, China
2. Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites, Shanghai 200232, China

Received:2020-07-07 Online:2021-06-25 Published:2021-06-25
Contact: LIANG Jing

Abstract

Abstract:

Studying the change of soil organic carbon content in the process of urbanization and identifying the spatial pattern of soil organic carbon will play a guiding role in the study of urban building. In this study, the land use pattern and area were obtained by remote sensing image data, the influence of land use change on soil organic carbon content and density was analyzed, and the soil organic carbon storage of Sanlin Green Wedge to be built was estimated. The results showed that the organic carbon content of unsealed soil and sealed soil were 7.51 g·kg^-1 and 4.67 g·kg^-1, respectively. The content and density of soil organic carbon in unsealed green space was significantly (P<0.05) higher than that in sealed soil. The existing soil organic carbon storage was about 2.99×10⁴ t. Compared with the current situation, the soil organic carbon pool changed greatly after the proposed construction, and the estimated organic carbon storage could reach 6.29× 10⁴ t. The unsealed soil organic carbon storage was 5.38×10⁴ t, which was about 1.8 times of the existing soil organic carbon storage. This study elucidated the impact of land use change on soil organic carbon pool in the process of urbanization, which was of great significance for accurately quantifying the soil organic carbon pool of urbanization and evaluating urban carbon balance.

Key words: urbanization, land use, green wedge, unsealed soil, sealed soil, organic carbon storage

CLC Number:

ZHANG Qingqing, LIANG Jing, WU Haibing, ZHENG Sijun, HUANG Junhua. Effect of land use change on soil organic carbon pool in process of urbanization: a case study of Sanlin Green Wedge, Shanghai[J]. Acta Agriculturae Zhejiangensis, 2021, 33(6): 1062-1068.

Figures/Tables 7

References 12

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指标 Index	最小值 Minimum	最大值 Maximum	平均值 Average	标准差 Standard deviation	变异系数 CV/%	偏度 Skewness	峰度 Kurtosis
有机碳	1.66	16.12	5.31	2.57	48.39	5.28	2.00
Soil organic carbon/(g·kg^-1)
有机碳密度	8.74	212.84	59.30	36.92	62.27	4.70	1.80
Soil organic carbon density/(t·hm^-2)

指标 Index	最小值 Minimum	最大值 Maximum	平均值 Average	标准差 Standard deviation	变异系数 CV/%	偏度 Skewness	峰度 Kurtosis
有机碳	1.66	16.12	5.31	2.57	48.39	5.28	2.00
Soil organic carbon/(g·kg^-1)
有机碳密度	8.74	212.84	59.30	36.92	62.27	4.70	1.80
Soil organic carbon density/(t·hm^-2)

土地利用方式 Land use pattern		土壤密度 Soil bulk density/ (g·cm^-3)	土壤厚度 Soil thickness/cm	土壤有机碳含量 Soil organic carbon content/(g·kg^-1)
现状Current situation	拟建成Future situation	土壤密度 Soil bulk density/ (g·cm^-3)	土壤厚度 Soil thickness/cm	土壤有机碳含量 Soil organic carbon content/(g·kg^-1)
开放土壤Unsealed soil	开放土壤Unsealed soil	1.32	100.0	17.68
开放土壤Unsealed soil	封闭土壤Sealed soil	1.55	65.3	7.51
封闭土壤Sealed soil	封闭土壤Sealed soil	1.55	65.3	4.67
封闭土壤Sealed soil	开放土壤Unsealed soil	1.32	100	17.68

土地利用方式 Land use pattern		土壤密度 Soil bulk density/ (g·cm^-3)	土壤厚度 Soil thickness/cm	土壤有机碳含量 Soil organic carbon content/(g·kg^-1)
现状Current situation	拟建成Future situation	土壤密度 Soil bulk density/ (g·cm^-3)	土壤厚度 Soil thickness/cm	土壤有机碳含量 Soil organic carbon content/(g·kg^-1)
开放土壤Unsealed soil	开放土壤Unsealed soil	1.32	100.0	17.68
开放土壤Unsealed soil	封闭土壤Sealed soil	1.55	65.3	7.51
封闭土壤Sealed soil	封闭土壤Sealed soil	1.55	65.3	4.67
封闭土壤Sealed soil	开放土壤Unsealed soil	1.32	100	17.68

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Effect of land use change on soil organic carbon pool in process of urbanization: a case study of Sanlin Green Wedge, Shanghai

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