RAINFALL CORRECTION CONCERNING ASSESSMENT ON CROPLAND SOIL WATER RESOURCES

Yang Xingguo; Ke Xiaoxin; Zhang Xudong; Yang Qiguo

Vol.12, NO.1, 2001

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2001 > 12(1): 123-126

Yang Xingguo, Ke Xiaoxin, Zhang Xudong, et al. Rainfall correction concerning assessment on cropland soil water resources. J Appl Meteor Sci, 2001, 12(1): 123-126.

Citation:

Yang Xingguo, Ke Xiaoxin, Zhang Xudong, et al. Rainfall correction concerning assessment on cropland soil water resources. J Appl Meteor Sci, 2001, 12(1): 123-126.

Yang Xingguo, Ke Xiaoxin, Zhang Xudong, et al. Rainfall correction concerning assessment on cropland soil water resources. J Appl Meteor Sci, 2001, 12(1): 123-126.

Citation:

Yang Xingguo, Ke Xiaoxin, Zhang Xudong, et al. Rainfall correction concerning assessment on cropland soil water resources. J Appl Meteor Sci, 2001, 12(1): 123-126.

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RAINFALL CORRECTION CONCERNING ASSESSMENT ON CROPLAND SOIL WATER RESOURCES

Lanzhou Arid Meteorological Institute, Lanzhou 730020

Received Date: 1999-08-16
Rev Recd Date: 2000-01-21
Publish Date: 2001-02-28

Abstract

Abstract

Applying the rainfall (P) measured through lysimeter and the automatic recording rainfall (P′), a comparison has been made. The relation between P and P′is linear, and P is larger than P′. The mean correction coefficient of rainfall (K) is 0.037. K is 0.04 to 0.045 on condition that rainfall duration is shorter than 6 h and otherwise K is 0.27. K decreases with the increase of rainfall intensity. Meanwhile, the rainfall correction from June to September in the rainfed region of Gansu (RRG) including 19 meteorological stations also has been made. The result is that P is about 11.7 to 27.4 larger than P′. The mean P on the area of PRG is 18.4 mm larger than mean P′.
- Rainfall;
- Correction

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References(5)

Figures and Tables

图 1 降雨量P和次降雨量P′的关系

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图 2 降雨强度和降雨订正系数的关系

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表 1 降雨持续时间和降雨量订正系数的关系

表 2 甘肃河东雨养农业区6~9月雨量的修正

References

[1]	柯晓新, 林日暖, 徐国昌, 等.大型称重式蒸渗计研制.应用气象学报, 1994, 5(2):151~157. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19940229&flag=1
[2]	李宝庆, 周延辉, 赵家义. 新型蒸渗仪的结构、功能和工作原理. 农田蒸发-测定与计算. 北京: 气象出版社, 1991. 75~83.
[3]	彭素琴, 杨兴国, 柯晓新, 等.甘肃河东地区降雨特征分析研究.水科学进展, 1996, 7(1):73~78. http://www.cnki.com.cn/Article/CJFDTOTAL-SKXJ199601011.htm
[4]	程维新, 胡朝炳, 张兴权.决定农田蒸发量的若干因素.农田蒸发与作物耗水量的研究. 1994.4~13.
[5]	由懋正, 王会肖. 农田水量平衡与土壤水分动态. 农田土壤水资源评价. 北京: 气象出版社, 1996. 16~44.