利用自动站逐日降水量实时估测土壤墒情

中国农业气象 ›› 2009, Vol. 30 ›› Issue (S2): 230-232.

利用自动站逐日降水量实时估测土壤墒情

周羽;冯明;

湖北省襄樊市气象局;武汉区域气候中心;

出版日期:2009-12-20 发布日期:2009-12-20

Real-time Estimation of Soil Moisture Content Based on Precipitation of Automatic Weather Station

ZHOU Yu1,FENG Ming2 (1.Xiangfan Meteorological Bureau,Xiangfan 441021,China;2.Wuhan Regional Climate Center,Wuhan 430074)

Online:2009-12-20 Published:2009-12-20

摘要/Abstract

摘要： 本文引入土壤有效降水和土壤准耗散概念,把不同强度的日降水量按土壤可利用程度划分为9个等级,建立逐日有效降水、旬平均无有效水分来源下的土层贮水变化量(土壤准耗散)和土壤日耗散计算模型。并基于土壤逐日贮水量动态变化模型和土壤墒情指数,实时估算土壤湿度变化,进而利用加密自动气象站逐日降水量资料动态监测区域水分的盈亏和旱涝变化。研究结果可为自动站资料的应用、土壤墒情监测和干旱预警提供新的思路和方法。

关键词: 自动站, 有效降水, 土壤准耗散, 土壤墒情监测

Abstract: The concept of soil effective precipitation and soil quasi-evapotranspiration was introduced in this paper.The 9 grades of precipitation were determined according to water efficiency.Models of effective precipitation,ten-day period water change storing soil and soil water evapotranspiration were established.According to the models and index of soil moisture,soil moisture change in real-time was estimated.Further using every day precipitation of automatic weather station,the profit and loss of soil water and the changes of droughts and floods were observed in movement.The results provided a new ideas and methods for using the data of automatic weather station,observing soil moisture and droughts forecast.

Key words: Automatic weather station, Effective precipitation, Soil standard evapotranspiration, Soil moisture content monitoring

周羽;冯明;. 利用自动站逐日降水量实时估测土壤墒情[J]. 中国农业气象, 2009, 30(S2): 230-232.

ZHOU Yu1,FENG Ming2 (1.Xiangfan Meteorological Bureau,Xiangfan 441021,China;2.Wuhan Regional Climate Center,Wuhan 430074). Real-time Estimation of Soil Moisture Content Based on Precipitation of Automatic Weather Station[J]. Chinese Journal of Agrometeorology, 2009, 30(S2): 230-232.

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