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[1]XU Hui,ZHANG Fangmin,HUANG Jin.Spatiotemporal Variation of Dryness/Wetnessin Jiangsu Province During 1961-2012 and Its Possible Impacts on Single-Crop Rice Yield[J].Research of Soil and Water Conservation,2017,24(06):250-254,261.

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Spatiotemporal Variation of Dryness/Wetnessin Jiangsu Province During 1961-2012 and Its Possible Impacts on Single-Crop Rice Yield

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 06 Page number: 250-254,261 Column: Public date: 2017-11-24

Title:: Spatiotemporal Variation of Dryness/Wetnessin Jiangsu Province During 1961-2012 and Its Possible Impacts on Single-Crop Rice Yield

Author(s):: XU Hui¹, ZHANG Fangmin², HUANG Jin²; 1. Nanjing Research Institute of Environmental Protection, Nanjing 210013, China;
2. School of Applied Meteorology, Nanjing University of Information Science and Technology, Nanjing 210044, China

Keywords:: dryness/wetness variability; Jiangsu; single-crop rice; SPI

CLC:: P426.615

DOI:: -

Abstract:: Based on the data of monthly precipitation and single-crop rice yield at 52 meteorological stations in Jiangsu during 1961-2012, the Standardized Precipitation Indexes (SPI) on the 1-month scale were calculated, and the possible relationship between dryness/wetness variability and rice yield was explored. On the provincial scale, the trend test for the SPI in different month during growing periods of single-crop rice indicated that June, July, August had wetting tendency, and the wetting tendency in August was more obvious; however, May, September, October had drying tendency, and the wetting tendency in September was more obvious. The changing tendency of dryness/wetness variability on the station scale was consistent with the results on the provincial scale, and it should be pointed out that the stations with significant wetting tendency in August and drying tendency in September were distributed in south Jiangsu. On the provincial scale, the correlation analyses between the of single-crop rice yield and SPI in different months during growing periods indicated that the wetter the climate in July, August, September, and October was, the lower the yield was. The results on the station scale indicated that the correlation between the single-crop rice yield and SPI had obvious regional difference, the single-crop rice in south Jiangsu was more sensitive to dryness/wetness variability, and the abundant rainfall events would have obvious impacts on the yield.

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