数字农科院2.0

Quantitative Assessment Of The Impact Of Human Activities On Terrestrial Net Primary Productivity In The Yangtze River Delta

文献类型： 外文期刊

作者： Huang, Q; Zhang, FY; Zhang, Q; Ou, H; Jin, YX

作者机构：

关键词： Net Primary Productivity; Hanpp; Human Activities; Land Use; Yangtze River Delta

期刊名称： SUSTAINABILITY

ISSN：

年卷期： 2020 年 12 卷 4 期

页码：

收录情况： JCR（2021版）

摘要： The continuous growth of the economy and population have promoted increasing consumption of natural resources, and raised concerns regarding the upper limits of the terrestrial ecosystems with biomass accessible for humanity. Here, human appropriation of net primary production (HANPP) was employed to assess the influence of human activities on terrestrial net primary production (NPP), and a detailed method was introduced to simulate the magnitude and trends of HANPP in the Yangtze River Delta. The results showed that the total HANPP of the Yangtze River Delta increased from 102.3 Tg C yr(-1) to 142.2 Tg C yr(-1), during 2005-2015, with an average of 121.3 Tg C yr(-1). NPP changes induced by harvest (HANPP(harv)) made the dominant contribution of 79.9% to the total HANPP, and the increase of HANPP(harv) in cropland was the main driver of total HANPP growth, which was significantly correlated with the improvement in agricultural production conditions, such as total agricultural machinery power and effective irrigation area. The proportion of HANPP ranged from 59.3% to 72.4% of potential NPP during 2005-2015 in the Yangtze River Delta, and distinguishable differences in the proportions were found among the four provinces in the Yangtze River Delta. Shanghai had the largest proportion of 84.3%, while Zhejiang had the lowest proportion of 32.0%.

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