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[1]PEI Jie,WANG Li,CHAI Ziwei,et al.Land Use/Cover Change and Carbon Effect in Shenzhen City Based on RS and GIS[J].Research of Soil and Water Conservation,2017,24(03):227-233.

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Land Use/Cover Change and Carbon Effect in Shenzhen City Based on RS and GIS

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 03 Page number: 227-233 Column: Public date: 2017-06-28

Title:: Land Use/Cover Change and Carbon Effect in Shenzhen City Based on RS and GIS

Author(s):: PEI Jie^1,2, WANG Li¹, CHAI Ziwei³, FU Qinghua⁴, NIU Zheng¹; 1. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China;
2. College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China;
3. Guangdong Environmental Monitoring Center, Guangzhou 510308, China;
4. Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission, Guangzhou 510611, China

Keywords:: land use change; remote sensing; GIS; carbon emission; Shenzhen City

CLC:: TP79;F301.2

DOI:: -

Abstract:: Based on the multi-temporal remote sensing images, combined with energy consumption data and relevant empirical data, RS and GIS technologies were employed to analyze the land use/cover change and its impact on carbon cycle in Shenzhen City, Guangdong Province from 2005 to 2013. Results show that land use in Shenzhen City has undergone a remarkable change in the recent 9 years. The area of forest land, the largest carbon sink in the region, has decreased by 14.96%, and its net reduction is 11 524.32 hm². In contrast, construction land, the largest carbon source, its area has increased by 23.26%, and its net increase reaches up to 18 565.39 hm². As for other land use types such as cultivated land, grassland and water area, their areas have reduced by 37.17%, 31.98% and 11.56%, respectively, while unutilized land area has been boosted by 713.28%. In the aspect of direction, the process of land conversion within study area in the recent 9 years includes both positive ecological evolution and adverse ecological evolution. Besides, it also comprises non-agriculturalization of cultivated land together with reclamation and exit of construction land. In general, land conversion process shows complicated characteristics of non-unidirectionality. From the perspective of numerical characteristics, forestland is the largest contributor in area transfer, followed by cultivated land, while construction land is the largest acceptor. Based on the carbon effect calculation model, we estimate that, caused by land use/cover change in study area in the recent 9 years, carbon emission increment has outnumbered carbon absorption increment by 854 100 tons. The fact reflects that land use pattern change under the influence of human activities and natural factors directly affects regional carbon cycle. Thus, Shenzhen City has to confront a severe challenge in low-carbon city construction project.

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