农业工程学报2012，Vol.28Issue(22)：181-188,8.DOI:10.3969/j.issn.1002-6819.2012.22.026
基于空间信息的农业干旱综合监测模型及其应用
Comprehensive monitoring model for agricultural drought and its application based on spatial information
摘要
Abstract
To improve the accuracy of the agricultural drought monitoring, the comprehensive monitoring model coupled with the remote sensing data and meteorological data was used. This model was established based on the relationship between the standardization vegetation supply water index (VSWIs), the comprehensive precipitation index (CPI) and the synchronous soil moisture data measured in the study area. The VSWIS was suitable for monitoring drought at high density vegetation area, and the CPI was suitable for monitoring drought at tropical area. The root mean square error (RMSE) of the model was 4.65% and the relative root mean square error (RMSEr) was 19.28%. Furthermore, the model was used to evaluate the change of the agricultural drought in Hainan island from October 2004 to January 2005. The results indicated that the drought in the study area were significantly different. Overall, the drought in the west and north were more serious than that in the east and south of the island respectively, and the drought in the plain was more serious than that in the mountain area. In terms of the time changes, the drought approached maximum in early December 2004. Until late January 2005, the drought was still serious. The heavy drought area of paddy, upland and special woodland accounted for 59%, 61% and 20% respectively. Crop growing was constrained obviously by this drought. Compared with last year, the value of the accumulated normalized difference vegetation index (NDVI) was reduced by 6.34%, and yield of the natural rubber was reduced about 1.16x 104t from October to December in 2004. The research provides a reference for monitoring agricultural drought.关键词
遥感/干旱/监测/农业/空间信息/海南岛Key words
remote sensing/ drought/ monitoring/ agriculture/ spatial information/ Hainan island分类
农业科技引用本文复制引用
李海亮,戴声佩,胡盛红,田光辉,罗红霞..基于空间信息的农业干旱综合监测模型及其应用[J].农业工程学报,2012,28(22):181-188,8.基金项目
国家自然科学基金项目(40971218) （40971218）
农业部农业信息技术重点实验室开放基金(2012006) （2012006）
中央级公益性科研院所基本科研业务费专项资金(中国热带农业科学院院本级)资助项目(1630012012017) （中国热带农业科学院院本级）
海南省热带作物信息技术应用研究重点实验室开放基金(rdzwkfjj003). （rdzwkfjj003）
