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遥感技术与应用  2011, Vol. 26 Issue (1): 82-88    DOI: 10.11873/j.issn.1004-0323.2011.1.82
研究与应用     
基于NDVI数据的三江平原农田物候监测
常守志1,2,王宗明1,宋开山1,刘殿伟1,张柏1,张春华1,2
(1.中国科学院东北地理与农业生态研究所,吉林 长春130012; 2.中国科学院研究生院,北京100049)
Monitoring Cropland Phenology in Sanjiang Plain based on NDVI Data
CHANG Shou-zhi1,2,WANG Zong-ming1,SONG Kai-shan1,LIU Dian-wei1,ZHANG Bai1,ZHANG Chun-Hua1,2
(1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China;
2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China)
 全文: PDF(3089 KB)  
摘要:

物候现象被称为气候变化的积分仪,研究农田物候现象对农业生产有重要的指导意义。多时相遥感影像使区域物候监测成为可能。利用傅里叶级数对MODIS NDVI数据进行平滑,结合地面观测资料,采用动态阈值法提取物候信息,并与实际观测结果进行比较分析。研究结果表明:三江平原大部分农作物在第120~130 d开始生长,在第250~260 d左右停止生长,2003年三江平原农作物开始生长和结束的时间较早,2005年开始生长日期比2003年有所推迟,2007年农作物开始生长的日期早于2005年,但生长季结束的日期比2003年和2005年都晚,2007年生长季长度较长。采用MODIS NDVI数据获取的物候参数具有一定的可靠性,在农田大面积分布区域监测结果更为准确。

关键词: NDVI时间序列谐波分析动态阈值法物候监测三江平原    
Abstract:

Phenological records provide an integrative indication of the sensitivity of natural systems to climate changes.A smoothing algorithm based on fourier function was firstly applied to the MODIS NDVI dataset to minimize the effects of anomalous values caused by atmospheric haze and cloud contamination,and daily NDVI data were generated.Together with the field observation data,the cropping system and its related phenology in Sanjiang Plain were then estimated  based on the smoothed NVDI time-series dataset.The starting dates and the ending dates of growth season were extracted,and were compared to observation data.The results indicate:the starting dates of growing season in Sanjiang Plain focus on 120th\|130th day,and the ending dates of growing season focus on 250th -260th day.The starting and ending dates in 2003 were earlier,while the starting dates in 2005 were delayed.And the starting dates in 2007 were earlier than 2005s,the ending dates in 2007 were the latest.The grow season in 2007 were the longest in the three years.Monitoring spatial patterns of cropland phenology based on MODIS NDVI data is practicable,especially in the large area of crop land.

Key words: NDVI    Harmonic analysis method    Dynamic threshold method    Phenology monitoring    Sanjiang plain
收稿日期: 2010-07-05 出版日期: 2011-05-05
:  TP 79  
基金资助:

国家重点基础研究发展计划资助(2009CB421103)、中国科学院知识创新工程重要方向项目(KZCX2YW341)、国家自然科学基金项目(40930527、40871187)。

通讯作者: 王宗明(1976-),男,内蒙古赤峰人,研究员,主要从事生态遥感与全球变化的区域响应研究。Email:zongmingwang@gamil.com。     E-mail: changshouzhi@126.com
作者简介: 常守志(1984-),男,河南周口人,硕士研究生,主要从事资源环境遥感与GIS应用研究。Email:changshouzhi@126.com。
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引用本文:

常守志,王宗明,宋开山,刘殿伟,张柏,张春华. 基于NDVI数据的三江平原农田物候监测[J]. 遥感技术与应用, 2011, 26(1): 82-88.

CHANG Shou-zhi,WANG Zong-ming,SONG Kai-shan,LIU Dian-wei,ZHANG Bai. Monitoring Cropland Phenology in Sanjiang Plain based on NDVI Data. Remote Sensing Technology and Application, 2011, 26(1): 82-88.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2011.1.82        http://www.rsta.ac.cn/CN/Y2011/V26/I1/82

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