Quantitative Assessment of the Human Appropriation of Net Primary Production (HANPP) in the Coastal Areas of Jiangsu, China

Fangyi Zhang, Lijie Pu and Qing Huang
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Fangyi Zhang: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China
Lijie Pu: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China
Qing Huang: School of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China

Sustainability, 2015, vol. 7, issue 12, 1-14

Abstract: Global increases in population and consumption have raised concerns regarding the sustainability of the current and future use of natural resources. The human appropriation of net primary production (HANPP) provides a useful measure for determining human-derived alterations in the amount of biomass that is available in ecosystems each year. HANPP was calculated based on vegetation modelling, agricultural statistics, and remote sensing data on land use and land cover to assess the human impacts on ecosystems in the coastal areas of Jiangsu, China. The results showed that HANPP increased from 332 g·C/m 2 /year in 2000 to 442 g·C/m 2 /year in 2010, with an average annual increase of 2.9%. The proportion of appropriated net primary production increased from 50.3% to 71.0% of NPP pot , mainly driven by HANPP harv (harvested NPP) with an increase from 45.2% to 61.3% of NPP pot . Additionally, the spatial variation in average HANPP was striking among counties in the observed period with the lowest and highest values of 21.8% and 63.8% of NPP pot , respectively. Further analysis showed that observed levels of HANPP are high due to a high level of biomass harvest from cropland and the increases in fertilizer use, farmland irrigation rate and population and economic growth explain the trends in HANPP in the coastal areas of Jiangsu.

Keywords: HANPP; NPP; spatial-temporal patterns; factors; coastal areas of Jiangsu (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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