[1]YE Zhengwei.Precipitation Change and Its Trend in Recent 50 Years in the Coastal Region of Jiangsu Province[J].Research of Soil and Water Conservation,2015,22(01):176-180.
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Precipitation Change and Its Trend in Recent 50 Years in the Coastal Region of Jiangsu Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 01
Page number:
176-180
Column:
Public date:
2015-02-28
- Title:
- Precipitation Change and Its Trend in Recent 50 Years in the Coastal Region of Jiangsu Province
- CLC:
- P332.1
- DOI:
- -
- Abstract:
- Multiple methods were applied to detect the characteristic of precipitation and its trend in 1960—2009 in the coastal region of Jiangsu Province. Frequent fluctuation can be found in annual precipitation with more rainfall appeared in southern part while less in northern part, and maximum change range occurred in Yancheng while minimum in Nantong. An increasing trend for decadal annual precipitation can be seen in Nantong while Yancheng occurred maximum precipitation in 1980s and it decreased greatly ever since then, Lianyungang was proved to be less decadal precipitation and it had the maximum change range. For precipitation in flood season, it is demonstrated that more precipitation appeared in the northern part while less precipitation in the southern part, but the change range in flood season is similar to that of annual precipitation. However, a continuous increase trend for decadal flood season precipitation can be outlined in Nantong, while minimum precipitation appeared in 1970s and 1980s in Yancheng and Lianyungang, respectively, but the former has a relatively lower decadal precipitation in flood season while the latter has higher value before 1980s and lower value after 1980s. SPI analysis showed that more frequent shift in flood and drought presented in 2000s with more flood dominated implying the effect of the northward advance of the Jianghuai Plum rain belt. A slight decreasing trend can be detected in Nantong and Yancheng for the trend of annual precipitation while increasing trend in Lianyungang, but a reversed trend can be pre-assessed in Nantong, Yancheng and Lianyungang, respectively for precipitation in flood season. R/S analysis reveals that decreasing trend will continue into the near future in Nantong and Yancheng while increasing trend in Lianyungang for annual precipitation, but for precipitation in flood season, increasing trend will continue in Nantong and Yancheng while decreasing trend in Lianyungang.
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