Soil ammonia volatilization risk evaluation method and device

• Main Authors: XU RONGHUA, LI BOWEN, CHEN DONGNI, LI CONGCONG, LI YUTONG, CAI YANPENG, SUN LIAN
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2019
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The embodiment of the invention provides a soil ammonia volatilization risk evaluation method and device. The method comprises the steps that the index data of factors affecting soil ammonia volatilization in a target region are acquired; a number of principal component factors are extracted from the index data, and a principal component factor model is established; the principal component factorscore of each target region is calculated according to the principal component factor model; the edge distribution function of each principal component factor is fit according to each principal component factor score, and a Copula function is determined according to the edge distribution function; and finally, according to the numerical value of the Copula function, the ammonia volatilization riskof the soil in the target area is evaluated. According to the method, the numerical value range of the Copula function is large; the separation rate of evaluation results is high; and the evaluationresults can be accurately g