[1]XU Hui,CHEN Jinhua,HUANG Jin,et al.Spatiotemporal Distribution of Risk in Yield Losses for Winter Wheat in Anhui Province Based on Spatial Econometric Analysis[J].Research of Soil and Water Conservation,2022,29(03):383-388.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 03
Page number:
383-388
Column:
Public date:
2022-04-20
- Title:
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Spatiotemporal Distribution of Risk in Yield Losses for Winter Wheat in Anhui Province Based on Spatial Econometric Analysis
- Author(s):
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XU Hui1, CHEN Jinhua2, HUANG Jin3, ZHANG Fangmin3
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(1.Nanjing Research Institute of Ecology and Environmental Protection, Nanjing,210013, China; 2.Rural Comprehensive Economic Information Center of Anhui Province/Anhui Agrometeorological Center, Hefei 230031, China; 3.School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China)
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- Keywords:
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winter wheat; Anhui Province; risk in yield losses; spatiotemporal distribution
- CLC:
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S512; S42
- DOI:
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- Abstract:
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Anhui Province is one of the most important winter wheat producing provinces in China. To ensure regional disaster prevention and mitigation, it is of great significance to analyze the temporal and spatial changes in risk of yield losses in Anhui. Based on the the annual series of climate-driven yield reduction rate(CRYRR)resulted from wheat yield from 1973 to 2014 in 74 districts/counties, the temporal and spatial distribution characteristics in risk of yield losses were analyzed by using spatial econometric analysis and climate diagnosis. The main results are as follows.(1)Based on the multi-annual average CRYRR, spatial distribution of the areas with high losses showed obvious interdecadal change, and the area along Huaihe River was identified as the dominant higher-risk area for yield losses.(2)Based on the barycenter migration model, the inter-annual variation of the barycenter longitude of yield losses showed a strong short-term oscillation during 1973—2014, while the barycenter latitude showed a significant decreasing trend.(3)Based on Mann-Kendall trend tests and Hurst index, risk in yield losses for winter wheat during 1973—2014 showed a stronger downward trend in north Anhui Province and showed an upward trend in southern Anhui Province, while the changing trends will continue the existing pattern. In general, the spatial and temporal evolution of risk in yield losses for winter wheat in Anhui Province showed the notable north-south difference, and the southern area will be the high-risk area of yield loss.