Variability of net primary production and its response to climate change: Case study in the lower-middle reaches of the Yangtze River

2011 ◽  
Author(s):  
Lin Wang ◽  
Yuanshu Jing
Keyword(s):  
Climate Change ◽  
Primary Production ◽  
Yangtze River ◽  
Net Primary Production ◽  
The Yangtze River

Quantitative Assessment of the Impact of Human Activities on Terrestrial Net Primary Productivity in the Yangtze River Delta

2020 ◽  
Vol 12 (4) ◽  
pp. 1697
Author(s):  
Qing Huang ◽  
Fangyi Zhang ◽  
Qian Zhang ◽  
Hui Ou ◽  
Yunxiang Jin
Keyword(s):  
Primary Production ◽  
Human Activities ◽  
Yangtze River ◽  
Net Primary Production ◽  
Yangtze River Delta ◽  
River Delta ◽  
The Yangtze River ◽  
Continuous Growth ◽  
The Impact ◽  
The Yangtze River Delta

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 (HANPPharv) made the dominant contribution of 79.9% to the total HANPP, and the increase of HANPPharv 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%.

Urban Vulnerability and Adaptability to Climate Change: A Case Study of Cities in the Yangtze River Delta

2018 ◽  
Vol 06 (01) ◽  
pp. 1850006 ◽  
Author(s):  
Xinlu XIE ◽  
Yan ZHENG ◽  
Jiahua PAN ◽  
Hongjian ZHOU
Keyword(s):  
Climate Change ◽  
Vulnerability Assessment ◽  
Yangtze River ◽  
Development Planning ◽  
Yangtze River Delta ◽  
River Delta ◽  
Assessment Model ◽  
The Yangtze River ◽  
The Yangtze River Delta

The cities of the Yangtze River Delta are densely populated with large amounts of wealth, for which reason they are faced with greater disaster risks brought by climate change. As a major research tool on climate change policies, vulnerability assessment provides reference for adaptive management. Based on literature review and case study, the paper first constructs the overall vulnerability assessment model for cities of the Yangtze River Delta by utilizing the indices of sensitivity and adaptability. Then, it assesses 16 typical cities of this region through factor analysis, an objective evaluation method, analyzes the driving factors of climate vulnerability in each city and conducts group comparisons according to their sensitivity and adaptability. Finally, it points out the importance of cities’ adaptability to climate change under multiple pressures of climate change, population growth and urbanization in the future, and gives some suggestions, such as strengthening risk assessment on climate change, including climate-proofing measures in urban development planning, protecting climatically vulnerable groups in cities, enhancing comprehensive capacities for disaster management in cities and encouraging the R&D and innovation on adaptation technologies.

scholarly journals Nonstationary Frequency Analysis of Censored Data: A Case Study of the Floods in the Yangtze River From 1470 to 2017

2020 ◽  
Vol 56 (8) ◽  
Author(s):  
Bin Xiong ◽  
Lihua Xiong ◽  
Shenglian Guo ◽  
Chong‐Yu Xu ◽  
Jun Xia ◽  
...  
Keyword(s):  
Censored Data ◽  
Frequency Analysis ◽  
Yangtze River ◽  
The Yangtze River ◽  
Nonstationary Frequency
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