基于多源数据的松嫩平原黑土区亚像元雪盖率算法研究
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摘要
为了解决积雪反演研究中常用的二值积雪分类法存在误差较大的问题,根据松嫩平原黑土区的独特地理环境,并在充分考虑地表类型的情况下,将中分辨率成像光谱仪(Moderate-resolution imaging spectroradiometer,MODIS)影像作为数据源、陆地成像仪(Operational land imager,OLI)影像视为"真值"数据,建立松嫩平原黑土区MODIS像元积雪覆盖率与归一化雪盖指数(Normalized difference snow index,NDSI)值之间的线性回归关系模型。结果表明,与MOD10A1积雪面积比例数据(Fractional snow cover,FSC)相比,反演模型雪盖率的误差分析结果得到改善,能够更好地满足当前积雪反演研究的现实要求。亚像元雪盖率估算模型在一定程度上提高了松嫩平原黑土区雪盖面积监测的精度,为该地区春季墒情预报、农业耕种提供了科学依据。
Snow is a unique environmental factor in the seasonal snow-covered area. The snow parameter inversion using remote sensing data has great significance on the researches of regional soil moisture forecast,hydrology,climate,etc. The problem of great error exists in the binary classification method commonly used in snow retrieval research. According to the unique geographical environment and the surface type in the black soil region of Songnen Plain,the MODIS images were chosen as data source,and the OLI images were regarded as"true value"data. Then the linear regression relation model between snow cover fraction from MODIS and NDSI was established in black soil region of Songnen Plain. The results showed that the adaptability of the MOD10 A1 FSC data was weak in the study area. The FSC data was 80. 21% which had a big difference compared with the snow cover fraction of OLI images( 87. 71%)at the same time phase. The correlation coefficient between the FSC data and OLI images was only 0. 58.The snow cover fraction of the inversion model built in the study was 85. 28% which was close to that of OLI images at the same time phase. The correlation coefficient between the snow cover fraction of the inversion model and OLI images was 0. 66. In addition,compared with the MOD10 A1 FSC data,the error statistics results,including root mean square error and mean absolute error of the inversion model were decreased significantly. The estimation model of snow cover fraction based on sub-pixel improved the monitoring accuracy of snow cover in black soil region of Songnen Plain to a certain extent,which can better satisfy the reality requirement to the current snow retrieval research. The research result provided a scientific basis for the soil moisture forecast in spring and agricultural cultivation in this region.
Snow is a unique environmental factor in the seasonal snow-covered area. The snow parameter inversion using remote sensing data has great significance on the researches of regional soil moisture forecast,hydrology,climate,etc. The problem of great error exists in the binary classification method commonly used in snow retrieval research. According to the unique geographical environment and the surface type in the black soil region of Songnen Plain,the MODIS images were chosen as data source,and the OLI images were regarded as"true value"data. Then the linear regression relation model between snow cover fraction from MODIS and NDSI was established in black soil region of Songnen Plain. The results showed that the adaptability of the MOD10 A1 FSC data was weak in the study area. The FSC data was 80. 21% which had a big difference compared with the snow cover fraction of OLI images( 87. 71%)at the same time phase. The correlation coefficient between the FSC data and OLI images was only 0. 58.The snow cover fraction of the inversion model built in the study was 85. 28% which was close to that of OLI images at the same time phase. The correlation coefficient between the snow cover fraction of the inversion model and OLI images was 0. 66. In addition,compared with the MOD10 A1 FSC data,the error statistics results,including root mean square error and mean absolute error of the inversion model were decreased significantly. The estimation model of snow cover fraction based on sub-pixel improved the monitoring accuracy of snow cover in black soil region of Songnen Plain to a certain extent,which can better satisfy the reality requirement to the current snow retrieval research. The research result provided a scientific basis for the soil moisture forecast in spring and agricultural cultivation in this region.
引文
1刘良明,徐琪,胡玥,等.利用非线性NDSI模型进行积雪覆盖率反演研究[J].武汉大学学报:信息科学版,2012,37(5):534-536.LIU Liangming,XU Qi,HU Yue,et al.Estimating fractional snow cover based on nonlinear NDSI model[J].Geomatics and Information Science of Wuhan University,2012,37(5):534-536.(in Chinese)
2 ROBINSON D A,DEWEY K F,HEIM J R R.Global snow cover monitoring:an update[J].Bulletin of the American Meteorological Society,1993,74(9):1689-1696.
3曹云刚,刘闯.一种简化的MODIS亚像元积雪信息提取方法[J].冰川冻土,2006,28(4):562-567.CAO Yungang,LIU Chuang.A simplified algorithm for extracting subpixel snow cover information from MODIS data[J].Journal of Glaciology&Geocryology,2006,28(4):562-567.(in Chinese)
4刘海,陈晓玲,宋珍,等.MODIS影像雪深遥感反演特征参数选择与模型研究[J].武汉大学学报:信息科学版,2011,36(1):113-116,121.LIU Hai,CHEN Xiaoling,SONG Zhen,et al.Study of characteristic parametric selection and model construction for snow depth retrieval from MODIS image[J].Geomaticsand Information Science of Wuhan University,2011,36(1):113-116,121.(in Chinese)
5何咏琪,黄晓东,方金,等.基于HJ-1B卫星数据的积雪面积制图算法研究[J].冰川冻土,2013,35(1):65-73.HE Yongqi,HUANG Xiaodong,FANG Jin,et al.Snow cover mapping algorithm based on HJ-1B satellite data[J].Journal of Glaciology&Geocryology,2013,35(1):65-73.(in Chinese)
6施建成.MODIS亚像元积雪覆盖反演算法研究[J].第四纪研究,2012,32(1):6-15.SHI Jiancheng.An automatic algorithm on estimating subpixel snow cover from MODIS[J].Quaternary Sciences,2012,32(1):6-15.(in Chinese)
7 HALL D K,RIGGS G A,SALOMOSON V V.Development of methods for mapping global snow cover using moderate resolution imaging spectroradiometer data[J].Remote Sensing of Environment,1995,54(2):127-140.
8 ROSENTHAL W,DOZIER J.Automated mapping of montane snow cover at subpixel resolution from the Landsat Thematic Mapper[J].Water Resources Research,1996,32(1):115-130.
9 PAINTER T H,DOZIER J,ROBERTS D A,et al.Retrieval of subpixel snow-covered area and grain size from imaging spectrometer data[J].Remote Sensing of Environment,2003,85(1):64-77.
10 PAINTER T H,RITTGER K,MCKENZIE C,et al.Retrieval of subpixel snow covered area,grain size,and albedo from MODIS[J].Remote Sensing of Environment,2009,113(4):868-879.
11 KAUFMAN Y J,KLEIDMAN R G,HALL D K,et al.Remote sensing of subpixel snow cover using 0.66 and 2.1μm channels[J].Geophysical Research Letters,2002,29(16):28-1-28-4.
12 BARTON J S,HALL D K,RIGGS G A.Remote sensing of fractional snow cover using moderate resolution imaging spectroradiometer(MODIS)data[C]∥Proceedings of the 57th Eastern Snow Conference,2000:171-183.
13 SALOMOSON V V,APPEL I.Estimating fractional snow cover from MODIS using the normalized difference snow index[J].Remote Sensing of Environment,2004,89(3):351-360.
14唐志光,王建,彦立利,等.基于MODIS的青藏高原亚像元积雪覆盖反演[J].干旱区资源与环境,2013,27(11):33-38.TANG Zhigang,WANG Jian,YAN Lili,et al.Estimating sub-pixel snow cover from MODIS in Qinghai-Tibet Plateau[J].Journal of Arid Land Resources&Environment,2013,27(11):33-38.(in Chinese)
15张颖,黄晓东,王玮,等.MODIS逐日积雪覆盖率产品验证及算法重建[J].干旱区研究,2013,30(5):808-814.ZHANG Ying,HUANG Xiaodong,WANG Wei,et al.Validation and algorithm redevelopment of MODIS daily fractional snow cover products[J].Arid Zone Research,2013,30(5):808-814.(in Chinese)
16刘继龙,任高奇,付强,等.松嫩平原黑土区玉米穗质量构成要素的空间变异性研究[J/OL].农业机械学报,2016,47(12):178-184,222.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?flag=1&file_no=20161222&journal_id=jcsam.DOI:10.6041/j.issn.1000-1298.2016.12.022.LIU Jilong,REN Gaoqi,FU Qiang,et al.Spatial variability of components of corn ear weight in black soil region of Songnen Plain[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2016,47(12):178-184,222.(in Chinese)
17李云,冯学智,肖鹏峰,等.巴音布鲁克典型区MODIS亚像元积雪覆盖率估算[J].南京大学学报:自然科学,2015,51(5):1022-1029.LI Yun,FENG Xuezhi,XIAO Pengfeng,et al.Estimating per-pixel snow cover fraction from MODIS in typical area of Bayanbulak[J].Journal of Nanjing University:Natural Sciences,2015,51(5):1022-1029.(in Chinese)
18王晓艳,王建,李弘毅,等.NDSI与NDFSI结合的山区林地积雪制图方法[J].遥感学报,2017,21(2):310-317.WANG Xiaoyan,WANG Jian,LI Hongyi,et al.Combination of NDSI and NDFSI for snow cover mapping in Mountainous-Forested[J].Journal of Remote Sensing,2017,21(2):310-317.(in Chinese)
19王杰,黄春林,郝晓华.一种考虑雪粒径变化的积雪面积反演算法[J].地球信息科学学报,2017,19(1):101-109.WANG Jie,HUANG Chunlin,HAO Xiaohua.An algorithm of snow cover fraction retrieval considering the variability of snow particle size[J].Journal of Geo-information Science,2017,19(1):101-109.(in Chinese)
20梁天刚,高新华,黄晓东,等.新疆北部MODIS积雪制图算法的分类精度[J].干旱区研究,2007,24(4):446-452.LIANG Tiangang,GAO Xinhua,HUANG Xiaodong,et al.Study on the accuracy of MODIS snow cover mapping algorithm in northern Xinjiang[J].Arid Zone Research,2007,24(4):446-452.(in Chinese)
21樊晓兵.复杂山区MOD10A1积雪面积数据精度变化研究[D].成都:西南交通大学,2016.FAN Xiaobing.The study of accuracy variation of MOD10A1 snow cover datas in Rugged Terrain[D].Chengdu:Southwest Jiaotong University,2016.(in Chinese)
22邓婕.基于多源遥感资料的中国积雪制图及其时空变化研究[D].兰州:兰州大学,2016.DENG Jie.Snow mapping and its dynamics using multi-source remote sensing data in China[D].Lanzhou:Lanzhou University,2016.(in Chinese)
23 FULLER W A.Measurement error models[M].New York:Wiley,1987:30-59.
24时正华,袁永生.Errors-in-variables模型的参数估计[J].曲阜师范大学学报:自然科学版,2005,31(1):35-37.SHI Zhenghua,YUAN Yongsheng.The parameter estimation of errors-in-variables model[J].Journal of Qufu Normal University:Natural Sciences,2005,31(1):35-37.(in Chinese)
25周强,王世新,周艺,等.MODIS亚像元积雪覆盖率提取方法[J].中国科学院研究生院学报,2009,26(3):383-388.ZHOU Qiang,WANG Shixin,ZHOU Yi,et al.Algorithm for MODIS subpixel snow fraction[J].Journal of the Graduate School of the Chinese Academy of Sciences,2009,26(3):383-388.(in Chinese)
2 ROBINSON D A,DEWEY K F,HEIM J R R.Global snow cover monitoring:an update[J].Bulletin of the American Meteorological Society,1993,74(9):1689-1696.
3曹云刚,刘闯.一种简化的MODIS亚像元积雪信息提取方法[J].冰川冻土,2006,28(4):562-567.CAO Yungang,LIU Chuang.A simplified algorithm for extracting subpixel snow cover information from MODIS data[J].Journal of Glaciology&Geocryology,2006,28(4):562-567.(in Chinese)
4刘海,陈晓玲,宋珍,等.MODIS影像雪深遥感反演特征参数选择与模型研究[J].武汉大学学报:信息科学版,2011,36(1):113-116,121.LIU Hai,CHEN Xiaoling,SONG Zhen,et al.Study of characteristic parametric selection and model construction for snow depth retrieval from MODIS image[J].Geomaticsand Information Science of Wuhan University,2011,36(1):113-116,121.(in Chinese)
5何咏琪,黄晓东,方金,等.基于HJ-1B卫星数据的积雪面积制图算法研究[J].冰川冻土,2013,35(1):65-73.HE Yongqi,HUANG Xiaodong,FANG Jin,et al.Snow cover mapping algorithm based on HJ-1B satellite data[J].Journal of Glaciology&Geocryology,2013,35(1):65-73.(in Chinese)
6施建成.MODIS亚像元积雪覆盖反演算法研究[J].第四纪研究,2012,32(1):6-15.SHI Jiancheng.An automatic algorithm on estimating subpixel snow cover from MODIS[J].Quaternary Sciences,2012,32(1):6-15.(in Chinese)
7 HALL D K,RIGGS G A,SALOMOSON V V.Development of methods for mapping global snow cover using moderate resolution imaging spectroradiometer data[J].Remote Sensing of Environment,1995,54(2):127-140.
8 ROSENTHAL W,DOZIER J.Automated mapping of montane snow cover at subpixel resolution from the Landsat Thematic Mapper[J].Water Resources Research,1996,32(1):115-130.
9 PAINTER T H,DOZIER J,ROBERTS D A,et al.Retrieval of subpixel snow-covered area and grain size from imaging spectrometer data[J].Remote Sensing of Environment,2003,85(1):64-77.
10 PAINTER T H,RITTGER K,MCKENZIE C,et al.Retrieval of subpixel snow covered area,grain size,and albedo from MODIS[J].Remote Sensing of Environment,2009,113(4):868-879.
11 KAUFMAN Y J,KLEIDMAN R G,HALL D K,et al.Remote sensing of subpixel snow cover using 0.66 and 2.1μm channels[J].Geophysical Research Letters,2002,29(16):28-1-28-4.
12 BARTON J S,HALL D K,RIGGS G A.Remote sensing of fractional snow cover using moderate resolution imaging spectroradiometer(MODIS)data[C]∥Proceedings of the 57th Eastern Snow Conference,2000:171-183.
13 SALOMOSON V V,APPEL I.Estimating fractional snow cover from MODIS using the normalized difference snow index[J].Remote Sensing of Environment,2004,89(3):351-360.
14唐志光,王建,彦立利,等.基于MODIS的青藏高原亚像元积雪覆盖反演[J].干旱区资源与环境,2013,27(11):33-38.TANG Zhigang,WANG Jian,YAN Lili,et al.Estimating sub-pixel snow cover from MODIS in Qinghai-Tibet Plateau[J].Journal of Arid Land Resources&Environment,2013,27(11):33-38.(in Chinese)
15张颖,黄晓东,王玮,等.MODIS逐日积雪覆盖率产品验证及算法重建[J].干旱区研究,2013,30(5):808-814.ZHANG Ying,HUANG Xiaodong,WANG Wei,et al.Validation and algorithm redevelopment of MODIS daily fractional snow cover products[J].Arid Zone Research,2013,30(5):808-814.(in Chinese)
16刘继龙,任高奇,付强,等.松嫩平原黑土区玉米穗质量构成要素的空间变异性研究[J/OL].农业机械学报,2016,47(12):178-184,222.http:∥www.j-csam.org/jcsam/ch/reader/view_abstract.aspx?flag=1&file_no=20161222&journal_id=jcsam.DOI:10.6041/j.issn.1000-1298.2016.12.022.LIU Jilong,REN Gaoqi,FU Qiang,et al.Spatial variability of components of corn ear weight in black soil region of Songnen Plain[J/OL].Transactions of the Chinese Society for Agricultural Machinery,2016,47(12):178-184,222.(in Chinese)
17李云,冯学智,肖鹏峰,等.巴音布鲁克典型区MODIS亚像元积雪覆盖率估算[J].南京大学学报:自然科学,2015,51(5):1022-1029.LI Yun,FENG Xuezhi,XIAO Pengfeng,et al.Estimating per-pixel snow cover fraction from MODIS in typical area of Bayanbulak[J].Journal of Nanjing University:Natural Sciences,2015,51(5):1022-1029.(in Chinese)
18王晓艳,王建,李弘毅,等.NDSI与NDFSI结合的山区林地积雪制图方法[J].遥感学报,2017,21(2):310-317.WANG Xiaoyan,WANG Jian,LI Hongyi,et al.Combination of NDSI and NDFSI for snow cover mapping in Mountainous-Forested[J].Journal of Remote Sensing,2017,21(2):310-317.(in Chinese)
19王杰,黄春林,郝晓华.一种考虑雪粒径变化的积雪面积反演算法[J].地球信息科学学报,2017,19(1):101-109.WANG Jie,HUANG Chunlin,HAO Xiaohua.An algorithm of snow cover fraction retrieval considering the variability of snow particle size[J].Journal of Geo-information Science,2017,19(1):101-109.(in Chinese)
20梁天刚,高新华,黄晓东,等.新疆北部MODIS积雪制图算法的分类精度[J].干旱区研究,2007,24(4):446-452.LIANG Tiangang,GAO Xinhua,HUANG Xiaodong,et al.Study on the accuracy of MODIS snow cover mapping algorithm in northern Xinjiang[J].Arid Zone Research,2007,24(4):446-452.(in Chinese)
21樊晓兵.复杂山区MOD10A1积雪面积数据精度变化研究[D].成都:西南交通大学,2016.FAN Xiaobing.The study of accuracy variation of MOD10A1 snow cover datas in Rugged Terrain[D].Chengdu:Southwest Jiaotong University,2016.(in Chinese)
22邓婕.基于多源遥感资料的中国积雪制图及其时空变化研究[D].兰州:兰州大学,2016.DENG Jie.Snow mapping and its dynamics using multi-source remote sensing data in China[D].Lanzhou:Lanzhou University,2016.(in Chinese)
23 FULLER W A.Measurement error models[M].New York:Wiley,1987:30-59.
24时正华,袁永生.Errors-in-variables模型的参数估计[J].曲阜师范大学学报:自然科学版,2005,31(1):35-37.SHI Zhenghua,YUAN Yongsheng.The parameter estimation of errors-in-variables model[J].Journal of Qufu Normal University:Natural Sciences,2005,31(1):35-37.(in Chinese)
25周强,王世新,周艺,等.MODIS亚像元积雪覆盖率提取方法[J].中国科学院研究生院学报,2009,26(3):383-388.ZHOU Qiang,WANG Shixin,ZHOU Yi,et al.Algorithm for MODIS subpixel snow fraction[J].Journal of the Graduate School of the Chinese Academy of Sciences,2009,26(3):383-388.(in Chinese)