干旱区生态环境知识资源中心(Arid): Detecting fluctuation of rice cultivated areas in semi-arid regions by combined use of MODIS and Landsat imageries

Arid

DOI	10.3178/hrl.9.107
	Detecting fluctuation of rice cultivated areas in semi-arid regions by combined use of MODIS and Landsat imageries
	Nagano, Takanori; Ono, Yumiko; Kotera, Akihiko; Singh, Ranvir
通讯作者	Nagano, T
来源期刊	HYDROLOGICAL RESEARCH LETTERS
ISSN	1882-3483
EISSN	1882-3416
出版年	2015
卷号	9 期号:4 页码:107-112
英文摘要	We developed an improved method to detect rice cultivated areas in semi-arid regions by combining the usage of Landsat imagery for detecting rice fields and MODIS for spatial and temporal upscaling of rice cultivation areas. We selected Haryana State in northwestern India as a case study area, where average farm plot size is small (similar to 4,000 m(2)) and cultivated areas largely fluctuate from year to year due to water availability. Firstly, rice cultivated areas were detected by unsupervised classification of Landsat images of a specific year. Secondly, two conditional parameters for time-series EVI and LSWI were optimized by Powell's method to best match the rice cultivated areas detected by MODIS to the areas detected by Landsat. Thirdly, calculated rice cultivated areas were compared with statistical data. Until results showed reasonable agreement, rice cultivated areas were reclassified in Landsat images and the following procedures were repeated. A good coefficient of determination (R-2 = 0.82) was obtained between the estimated rice area and the statistical data at the district (sub-state) level in the study area. This demonstrates the potential and increased accuracy of the developed methodology to detect and map harvested rice areas in water scarce arid and semi-arid regions.
英文关键词	irrigated agriculture water scarcity remote sensing EVI LSWI
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	ESCI
WOS记录号	WOS:000416305000010
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331336
作者单位	[Nagano, Takanori] Kobe Univ, Grad Sch Agr Sci, 1-1,Rokkodai, Kobe, Hyogo 6578501, Japan; [Ono, Yumiko] Kitai Planning, Tech Sect, Kobe, Hyogo, Japan; [Kotera, Akihiko] Res Inst Humanity & Nat, Res Dept, Kobe, Hyogo, Japan; [Singh, Ranvir] Massey Univ, Inst Agr & Environm, Palmerston North, New Zealand
推荐引用方式 GB/T 7714	Nagano, Takanori,Ono, Yumiko,Kotera, Akihiko,et al. Detecting fluctuation of rice cultivated areas in semi-arid regions by combined use of MODIS and Landsat imageries[J],2015,9(4):107-112.
APA	Nagano, Takanori,Ono, Yumiko,Kotera, Akihiko,&Singh, Ranvir.(2015).Detecting fluctuation of rice cultivated areas in semi-arid regions by combined use of MODIS and Landsat imageries.HYDROLOGICAL RESEARCH LETTERS,9(4),107-112.
MLA	Nagano, Takanori,et al."Detecting fluctuation of rice cultivated areas in semi-arid regions by combined use of MODIS and Landsat imageries".HYDROLOGICAL RESEARCH LETTERS 9.4(2015):107-112.