气候变化领域集成服务门户(CCPortal): Monitoring Perennial Sub-Surface Waterlogged Croplands Based on MODIS in Jianghan Plain, Middle Reaches of the Yangtze River

CCPortal

DOI	10.1016/S2095-3119(13)60563-8
	Monitoring Perennial Sub-Surface Waterlogged Croplands Based on MODIS in Jianghan Plain, Middle Reaches of the Yangtze River
	Xiao Fei; Li Yuan-Zheng; Du Yun; Ling Feng; Yan Yi; Feng Qi; Ban Xuan
发表日期	2014
ISSN	2095-3119
卷号	13 期号:8
英文摘要	Perennial waterlogged soil (PWS) is induced by the high level of groundwater, and has a persistent impact on natural ecosystems and agricultural production. Traditionally, distribution information regarding PWS is mainly collected from in situ measurements through groundwater level surveys and physicochemical property analyses. However, in situ measurements of PWS are costly and time-consuming, only rough estimates of PWS areas are available in some regions. In this paper, we developed a method to monitor the perennial waterlogged cropland using time-series moderate resolution imaging spectroradiometer (MODIS) data. The Jianghan Plain, a floodplain located in the middle reaches of the Yangtze River, was selected as the study area. Temporal variations of the enhanced vegetation index (EVI), night land surface temperature (LST), diurnal LST differences (ALST), albedo, and the apparent thermal inertia (ATI) were used to analyze the ecological and thermodynamic characteristics of the waterlogged croplands. To obtain pure remote sensing signatures of the waterlogged cropland from mixed pixels, the croplands were classified into different types according to soil and land cover types in this paper, and a linear mixing model was developed by fitting the signatures using the multiple linear regression approach. Afterwards, another linear spectral mixing model was used to get the proportions of waterlogged croplands in each 1 km x 1 km pixel. The result showed an acceptable accuracy with a root-mean-square error of 0.093. As a tentative method, the procedure described in this paper works efficiently as a method to monitor the spatial patterns of perennial sub-surface waterlogged croplands at a wide scale.
关键词	perennial waterlogged soil waterlogging MODIS enhanced vegetation index
学科领域	Agriculture
语种	英语
WOS研究方向	Agriculture, Multidisciplinary
来源期刊	JOURNAL OF INTEGRATIVE AGRICULTURE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111754
作者单位	Chinese Acad Sci, Inst Geodesy & Geophys, Wuhan 430077, Peoples R China
推荐引用方式 GB/T 7714	Xiao Fei,Li Yuan-Zheng,Du Yun,et al. Monitoring Perennial Sub-Surface Waterlogged Croplands Based on MODIS in Jianghan Plain, Middle Reaches of the Yangtze River[J]. 中国科学院西北生态环境资源研究院,2014,13(8).
APA	Xiao Fei.,Li Yuan-Zheng.,Du Yun.,Ling Feng.,Yan Yi.,...&Ban Xuan.(2014).Monitoring Perennial Sub-Surface Waterlogged Croplands Based on MODIS in Jianghan Plain, Middle Reaches of the Yangtze River.JOURNAL OF INTEGRATIVE AGRICULTURE,13(8).
MLA	Xiao Fei,et al."Monitoring Perennial Sub-Surface Waterlogged Croplands Based on MODIS in Jianghan Plain, Middle Reaches of the Yangtze River".JOURNAL OF INTEGRATIVE AGRICULTURE 13.8(2014).