The Influence of Drought and Flood Disasters on Rice NDVI in Summer

35th International Symposium on Remote Sensing of Environment

地球科学;生态环境科学

Piao, Meihua^1 ; Hongyan, Zhang^1 ; Zhao, Jianjun^1 ; Guo, Xiaoyi^1

School of Geographical Science, Northeast Normal University, Changchun, Jilin 130024, China^1

关键词: Drought and flood disasters;    Drought monitoring;    NDVI;    North Korea;    Precipitation data;    Quadratic function;    Tropical rainfall measuring missions;    Z indices;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/17/1/012054/pdf
DOI  :  10.1088/1755-1315/17/1/012054

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

During the period from 1995 to 2010, flooding and drought occurred frequently in North Korea. This greatly affected agriculture. The precipitation data was the main factor evaluated in flood and drought monitoring. In this study, the Z index method was used to estimate the change in precipitation, calculated from TRMM (Tropical Rainfall Measuring Mission) data. The Z index and the NDVI were combined with the map of distribution of rice to analyze the relationship between the Z index and NDVI during the growing months of rice in recent 12 years. The results revealed that the Z index is a good indicator to study the relative changes of precipitation in North Korea, and that the relationship between the Z index and NDVI in a quadratic function.