Quantifying Impacts of Land-Use/Cover Change on Urban Vegetation Gross Primary Production: A Case Study of Wuhan, China

Shishi Liu, Wei Du, Hang Su, Shanqin Wang and Qingfeng Guan
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Shishi Liu: College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Wei Du: College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Hang Su: College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Shanqin Wang: College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
Qingfeng Guan: National Engineering Research Center of GIS, China University of Geosciences (Wuhan), Wuhan 430074, China

Sustainability, 2018, vol. 10, issue 3, 1-18

Abstract: This study quantified the impacts of land-use/cover change (LUCC) on gross primary production (GPP) during 2000–2013 in a typical densely urbanized Chinese city, Wuhan. GPP was estimated at 30-m spatial resolution using annual land cover maps, meteorological data of the baseline year, and the normalized difference vegetation index (NDVI), which was generated with the spatial and temporal adaptive reflectance fusion model (STARFM) based on Landsat and MODIS images. The results showed that approximately 309.95 Gg C was lost over 13 years, which was mainly due to the conversion from cropland to built-up areas. The interannual variation of GPP was affected by the change of vegetation composition, especially the increasing relative fraction of forests. The loss of GPP due to the conversion from forest to cropland fluctuated through the study period, but showed a sharp decrease in 2007 and 2008. The gain of GPP due to the conversion from cropland to forest was low between 2001 and 2009, but increased dramatically between 2009 and 2013. The change rate map showed an increasing trend along the highways, and a decreasing trend around the metropolitan area and lakes. The results indicated that carbon consequences should be considered before land management policies are put forth.

Keywords: land-use/cover change; gross primary production; urban areas; spatial and temporal adaptive reflectance fusion model (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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