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比值统计法土壤墒情诊断模型

郑宏艳1,丁健1,侯显达2,侯彦林1,2*,米长虹1,黄治平1,刘书田1,2,王铄今2   

  1. 1农业部环境保护科研监测所, 天津 300191; 2北部湾环境演变与资源利用教育部重点实验室 (广西师范学院), 广西地表过程与智能模拟重点实验室 (广西师范学院), 南宁 530001)
  • 出版日期:2017-12-10 发布日期:2017-12-10

Ratio statistical diagnostic model of soil moisture.

ZHENG Hong-yan1, DING Jian1, HOU Xian-da2, HOU Yan-lin1,2*, MI Chang-hong1, HUANG Zhi-ping1, LIU Shu-tian1,2, WANG Shuo-jin2   

  1. (1Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China; Key Laboratory of Environment Change and Resources Use in Beibu Gulf (Guangxi Teachers Education University); Guangxi Key Laboratory of Earth Surface Processes and Intelligent Simulation (Guangxi Teachers Education University), Nanning 530001, China).
  • Online:2017-12-10 Published:2017-12-10

摘要: 本文介绍了研发的基于时段降水量和土壤初始含水量的比值统计法土壤墒情诊断模型的原理和建模方法,并应用7个省23个县87个监测点2012—2014年的数据建模,应用2015年的数据进行了验证。结果表明:比值统计法诊断模型的预测精度较高,达到80%以上;比值统计法诊断和预测合格率较高的主要原因是模型参数都是数据挖掘的结果而非人为确定;逐日模型法可以实现逐日土壤墒情的预测。研究表明,比值统计法模型可以单独作为墒情诊断模型使用。

关键词: 陆源污染, 营养元素, 生态系统, 胶州湾, 空间分布

Abstract:

The principle and modeling method of ratio statistical diagnostic model of soil moisture based on time-period precipitation and initial soil water content were introduced. Models were established by the data of 87 monitoring sites in 23 counties in 7 provinces during 2012-2014, and validated by the data of 2015. The results showed that the ratio statistical diagnostic model had high qualification rate (>80%) in diagnosis and prediction. The main reason for the high qualification rate of diagnosis and prediction was that the model parameters were the results of data mining, not determined by human. Daily time series model can predict daily soil water. The results indicated that the ratio statistical diagnostic model could be used alone as a soil moisture diagnosis model.
 

Key words: ecological system, land-based pollution, spatial distribution, Jiaozhou Bay., nutrient