基于MODIS-NDVI的云南省植被覆盖度变化分析
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摘要
植被覆盖变化监测是区域资源环境承载力研究的基础,本文通过计算2001-2016年MODIS-NDVI植被指数,辅以趋势分析、变异系数等方法,估算了2001-2016年云南省植被覆盖度,进而探讨了植被覆盖度的时空变化特征及与地形因子之间的分布关系。结果表明:(1) 2001-2016年云南省植被覆盖度呈显著增加趋势,增速为4.992%/10 a。(2)在空间上,植被覆盖度空间格局呈现由南向北、由西向东逐渐降低的特征,滇西、滇西南地区植被覆盖度最高,滇西北地区最低;植被覆盖度稳定性表现为由西南向东北方向波动性越来越大;滇东北地区植被覆盖度增加趋势明显优于其他区域,研究区内植被覆盖度变化趋势为增加、基本稳定和减少趋势的面积分别占49.53%、43.76%和6.71%。(3)植被覆盖度在2001-2006年、2006-2011年、2011-2016年3个时段的面积转移矩阵结果均表现为植被覆盖进化面积大于退化面积,二者的比值分别为1.42、1.63、2.01,植被覆盖情况呈持续改善趋势。(4)云南省植被覆盖度与地形因子之间的关系表现为,平均植被覆盖度随海拔增加呈先增加再减少、再增加、再减少趋势;随坡度的增加呈先增加再减少趋势;随坡向的变化呈由北向南逐渐减少趋势。
The monitoring of vegetation cover change is the basis of regional resource and environmental bearing capacity research. This paper estimates the vegetation of Yunnan Province from 2001 to 2016 by calculating the MODIS-NDVI vegetation index from 2001 to 2016, supplemented by trend analysis, and coefficient of variation. Next, the spatial and temporal variation characteristics of vegetation coverage and its distribution relationship with topographic factors are discussed in depth. Results are shown as follows:(1) From2001 to 2016, the vegetation coverage in Yunnan shows a significant increase, with a growth rate of 4.992%/10 a.(2) Spatially, the spatial pattern of vegetation coverage appears to be gradually decreasing from the south to the north and from the west to the east. The vegetation coverage is highest in the west and southwestern Yunnan and the lowest in the northwestern Yunnan. The stability of the vegetation coverage is characterized by increasing volatility from southwest to northeast; the increase of vegetation coverage in northeastern Yunnan was significantly better than other areas. The study region of the vegetation coverage change trend which was increased, basically stable and decreased, accounting for 49.53%, 43.76% and 6.71%, respectively.(3) The area transfer matrix results of vegetation coverage in the three periods from 2001-2006, 2006-2011, and 2011-2016 all showed that the vegetation cover evolution area was larger than the degraded area, and the ratios of the two were 1.42, 1.63, and 2.0. It indicates that the vegetation coverage shows a continuous improvement trend in the study area.(4) The relationship between vegetation coverage and topographic factors in Yunnan Province shows that the average vegetation coverage increases first, then decreases, then increases, and then decreases with the increase in altitude; it increases first and then decreases with increasing slope; Changes have gradually decreased from north to south.
The monitoring of vegetation cover change is the basis of regional resource and environmental bearing capacity research. This paper estimates the vegetation of Yunnan Province from 2001 to 2016 by calculating the MODIS-NDVI vegetation index from 2001 to 2016, supplemented by trend analysis, and coefficient of variation. Next, the spatial and temporal variation characteristics of vegetation coverage and its distribution relationship with topographic factors are discussed in depth. Results are shown as follows:(1) From2001 to 2016, the vegetation coverage in Yunnan shows a significant increase, with a growth rate of 4.992%/10 a.(2) Spatially, the spatial pattern of vegetation coverage appears to be gradually decreasing from the south to the north and from the west to the east. The vegetation coverage is highest in the west and southwestern Yunnan and the lowest in the northwestern Yunnan. The stability of the vegetation coverage is characterized by increasing volatility from southwest to northeast; the increase of vegetation coverage in northeastern Yunnan was significantly better than other areas. The study region of the vegetation coverage change trend which was increased, basically stable and decreased, accounting for 49.53%, 43.76% and 6.71%, respectively.(3) The area transfer matrix results of vegetation coverage in the three periods from 2001-2006, 2006-2011, and 2011-2016 all showed that the vegetation cover evolution area was larger than the degraded area, and the ratios of the two were 1.42, 1.63, and 2.0. It indicates that the vegetation coverage shows a continuous improvement trend in the study area.(4) The relationship between vegetation coverage and topographic factors in Yunnan Province shows that the average vegetation coverage increases first, then decreases, then increases, and then decreases with the increase in altitude; it increases first and then decreases with increasing slope; Changes have gradually decreased from north to south.
引文
[1]赵英时.遥感应用分析原理与方法[M].北京:科学出版社,2013.[Zhao Y S.Principles and methods of analysis of remote sensing applications[J].Beijing:Science Press,2013.]
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[4]朱高龙,柳艺博,居为民,等.4种常用植被指数的地形效应评估[J].遥感学报,2013,17(1):210-234.[Zhu G L,Liu Y B,Ju W M,et al.Evaluation of topographic effects on four commonly used vegetation indices[J].Journal of Remote Sensing,2013,17(1):210-234.]
[5]White M A,Asner G P,Nemani R R,et al.Measuring fractional cover and leaf area index in arid ecosystems Digital camera,radiation transmittance,and laser altimetry methods[J].Remote Sensing of Environment,2000,74(1):45-57.
[6]蔡宗磊,包妮沙,刘善军.国产高分一号数据估算草地植被覆盖度方法研究--以呼伦贝尔草原露天煤矿区为例[J].地理与地理信息科学,2017,33(2):32-38.[Cai Z LBao N S,Liu S J.Estimation method of fractional vegetation coverage for grassland based on Chinese GF-1 satellite image:taking Hulun Buir prairie open-pit coal mine as an example[J].Geography and Geo-information Science,2017,33(2):32-38.]
[7]杨胜天,刘昌明,杨志峰,等.南水北调西线调水工程区的自然生态环境评价[J].地理学报,2002,57(1):11-18.[Yang S TLiu C M,Yang Z F,et al.Natural eco-environmental evaluation of west route area of interbasin water transfer projec[J].Acta Geographica Sinica,2002,57(1):11-18.]
[8]彭飞,范闻捷,徐希孺,等.2000-2014年呼伦贝尔草原植被覆盖度时空变化分析[J].北京大学学报:自然科学版2017,53(3):563-572.[Peng F,Fan W J,Xu X R,et al.Analysis on temporal-spatial change of vegetation coverage in Hulunbuir Steppe(2000-2014)[J].Journal of Peking University:Natural Science Edition,2017,53(3):563-572.]
[9]雷璇,杨波,蒋卫国,等.东洞庭湿地植被格局变化及其影响因素[J].地理研究,2012,31(3):461-470.[Lei X,Yang B,Jiang W G,et al.Vegetation pattern changes and their influencing factors in the East Dongting Lake wetland[J]Geographical research,2012,31(3):461-470.]
[10]陈涛,牛瑞卿,李平湘,等.基于人工神经网络的植被覆盖遥感反演方法研究[J].遥感技术与应用,2010,25(1):24-30.[Chen T,Niu R Q,Li P X,et al.An artificial neura network method for vegetation cover retrieval with“Beijing-1”microsatellite data[J].Remote Sensing Technology and Application,2010,25(1):24-30.]
[11]吴云,曾源,赵炎,等.基于MODIS数据的海河流域植被覆盖度估算及动态变化分析[J].资源科学,2010,32(7)1417-1424.[Wu Y,Zeng Y,Zhao Y,et al.Monitoring and dynamic analysis of fractional vegetation cover in the Hai River Basin based on MODIS data[J].Resources Science,2010,32(7):1417-1424.]
[12]陈效逑,王恒.1982-2003年内蒙古植被带和植被覆盖度的时空变化[J].地理学报,2009,64(1):84-94.[Chen X Q,Wang H.Spatial and temporal variations of vegetation belts and vegetation cover degrees in Inner Mongolia from 1982 to 2003[J].Journal of Geographical Science,2009,64(1):84-94.]
[13]Choudhury B J,Ahmed N U,Idso S B,et al.Relations between evaporation coefficients and vegetation indices studied by model simulations[J].Remote Sensing of Environment,1994,50(1):1-17.
[14]Rundquist B C.The influence of canopy green vegetation fraction on spectral measurements over native tallgrass prairie[J].Remote Sensing of Environment,2002,81(1):129-135.
[15]Crick M.Estimating the ecological status and change of riparian zones in andalusia assessed by multi-temporal avhhr datasets[J].Ecological Indicators,2009,9(3):422-431.
[16]吴月圆,徐天蜀,岳彩荣.基于MODIS/NDVI的云南省近十年植被动态监测分析[J].绿色科技,2013(10):134-135.[Wu Y Y,Xu T S,Yue C R.Monitoring and analysis of vegetation dynamics in Yunnan Province in recent ten years based on MODIS/NDVI[J].Journal of Green Science and Technology,2013(10):134-135.]
[17]刘珊珊,王建雄,牛超杰,等.基于NDVI的云南省植被覆被变化趋势分析[J].湖北农业科学,2017,56(11):2037-2040.[Liu S S,Wang J X,Niu C J,et al.Trend analysis of vegetation cover change in Yunnan Province based on NDVI[J].Hubei Agricultural Sciences,2017,56(11):2037-2040.]
[18]王金亮,高雁.云南省近20年植被动态变化遥感时序分析[J].云南地理环境研究,2010,22(6):1-7.[Wang J L,Gao Y.RS-Based analysis on vegetation temporal changes in 1982-2002 of Yunnan Province[J].Yunnan Geographic Environment Research,2010,22(6):1-7.]
[19]Pandey P C,Mandal V P,Katiyar S,et al.Geospatial approach to assess the impact of nutrients on rice equivalent yield using MODIS Sensors'based MOD13Q1-NDVI data[J].IEEE Sensors Journal,2015,15(11):6108-6115.
[20]Galv?￡O L S,Breunig F M,Teles T S,et al.Investigation of terrain illumination effects on vegetation indices and VI-derived phenological metrics in subtropical deciduous forests[J].Mapping Sciences&Remote Sensing,2016,53(3):360-381.
[21]熊俊楠,彭超,范春捆,等.基于MODIS时序数据的汶川地震灾区植被覆盖变化监测[J].应用基础与工程科学学报,2018,26(1):60-69.[Xiong J N,Peng C,Fan C K,et al Dynamic monitoring of vegetation fraction change in disaster area of Wenchuan earthquake based on MODISTime-series data[J].Journal of Basic Science and Engineering,2018,26(1):60-69.]
[22]赵舒怡,宫兆宁,刘旭颖.2001-2013年华北地区植被覆盖度与干旱条件的相关分析[J].地理学报,2017,70(2):717-729.[Zhao S Y,Gong,Z N,Liu X Y,et al.Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013[J]Acta Geographica Sinica,2017,70(2):717-729.]
[23]李苗苗.植被覆盖度的遥感估算方法研究[D].北京:中国科学院研究生院(遥感应用研究所),2003.[Li M MThe method of vegetation fraction estimation by remote sensing[D].Beijing:Graduate University of Chinese Academy of Sciences(Institute of Remote Sensing Applications),2003.]
[24]何宝忠,丁建丽,张喆,等.新疆植被覆盖度趋势演变实验性分析[J].地理学报,2016,71(11):1948-1966.[He B Z,Ding J L,Zhang Z,et al.Experimental analysis of spatial and temporal dynamics of fractional vegetation cover in Xinjiang[J].Acta Geographica Sinica,2016,71(11):1948-1966.]
[25]张方.基于ERDAS的交通走廊带植被覆盖度变化研究[D].西安:长安大学,2010.[Zhang F.Research on dynamic change of vegetation coverage in the traffic corridor based on ERDAS[D].Xi'an:Chang'an University,2010.]
[26]贾媛.河保偏矿区植被覆盖度演变趋势与驱动力分析[D].太原:山西大学,2012.[Jia Y.Analysis of the evolution trend of He-Bao-Pian Mining Area FVC and the driving force[D].Taiyuan:Shanxi University,2012.]
[27]王朋.基于3S技术的大渡河上游植被覆盖度时空变化研究[D].成都:四川农业大学,2012.[Wang P.Study on temporal and spatial variation of thevegetation coverage in the upper reaches of Dadu River'based on 3S technology[D].Chengdu:Sichuan Agricultural University,2012.]
[2]Gitelson A A,Kaufman Y J,Stark R,et al.Novel algorithms for remote estimation of vegetation fraction[J].Remote Sensing of Environment,2002,80(1):76-87.
[3]章文波,符素华,刘宝元.目估法测量植被覆盖度的精度分析[J].北京师范大学学报(自然科学版),2001,37(3)402-408.[Zhang W B,Fu S H,Liu B Y.Error assessmen of visual estimation plant coverage[J].Journal Beijing Normal University(Natural Science),2001,37(3):402-408.]
[4]朱高龙,柳艺博,居为民,等.4种常用植被指数的地形效应评估[J].遥感学报,2013,17(1):210-234.[Zhu G L,Liu Y B,Ju W M,et al.Evaluation of topographic effects on four commonly used vegetation indices[J].Journal of Remote Sensing,2013,17(1):210-234.]
[5]White M A,Asner G P,Nemani R R,et al.Measuring fractional cover and leaf area index in arid ecosystems Digital camera,radiation transmittance,and laser altimetry methods[J].Remote Sensing of Environment,2000,74(1):45-57.
[6]蔡宗磊,包妮沙,刘善军.国产高分一号数据估算草地植被覆盖度方法研究--以呼伦贝尔草原露天煤矿区为例[J].地理与地理信息科学,2017,33(2):32-38.[Cai Z LBao N S,Liu S J.Estimation method of fractional vegetation coverage for grassland based on Chinese GF-1 satellite image:taking Hulun Buir prairie open-pit coal mine as an example[J].Geography and Geo-information Science,2017,33(2):32-38.]
[7]杨胜天,刘昌明,杨志峰,等.南水北调西线调水工程区的自然生态环境评价[J].地理学报,2002,57(1):11-18.[Yang S TLiu C M,Yang Z F,et al.Natural eco-environmental evaluation of west route area of interbasin water transfer projec[J].Acta Geographica Sinica,2002,57(1):11-18.]
[8]彭飞,范闻捷,徐希孺,等.2000-2014年呼伦贝尔草原植被覆盖度时空变化分析[J].北京大学学报:自然科学版2017,53(3):563-572.[Peng F,Fan W J,Xu X R,et al.Analysis on temporal-spatial change of vegetation coverage in Hulunbuir Steppe(2000-2014)[J].Journal of Peking University:Natural Science Edition,2017,53(3):563-572.]
[9]雷璇,杨波,蒋卫国,等.东洞庭湿地植被格局变化及其影响因素[J].地理研究,2012,31(3):461-470.[Lei X,Yang B,Jiang W G,et al.Vegetation pattern changes and their influencing factors in the East Dongting Lake wetland[J]Geographical research,2012,31(3):461-470.]
[10]陈涛,牛瑞卿,李平湘,等.基于人工神经网络的植被覆盖遥感反演方法研究[J].遥感技术与应用,2010,25(1):24-30.[Chen T,Niu R Q,Li P X,et al.An artificial neura network method for vegetation cover retrieval with“Beijing-1”microsatellite data[J].Remote Sensing Technology and Application,2010,25(1):24-30.]
[11]吴云,曾源,赵炎,等.基于MODIS数据的海河流域植被覆盖度估算及动态变化分析[J].资源科学,2010,32(7)1417-1424.[Wu Y,Zeng Y,Zhao Y,et al.Monitoring and dynamic analysis of fractional vegetation cover in the Hai River Basin based on MODIS data[J].Resources Science,2010,32(7):1417-1424.]
[12]陈效逑,王恒.1982-2003年内蒙古植被带和植被覆盖度的时空变化[J].地理学报,2009,64(1):84-94.[Chen X Q,Wang H.Spatial and temporal variations of vegetation belts and vegetation cover degrees in Inner Mongolia from 1982 to 2003[J].Journal of Geographical Science,2009,64(1):84-94.]
[13]Choudhury B J,Ahmed N U,Idso S B,et al.Relations between evaporation coefficients and vegetation indices studied by model simulations[J].Remote Sensing of Environment,1994,50(1):1-17.
[14]Rundquist B C.The influence of canopy green vegetation fraction on spectral measurements over native tallgrass prairie[J].Remote Sensing of Environment,2002,81(1):129-135.
[15]Crick M.Estimating the ecological status and change of riparian zones in andalusia assessed by multi-temporal avhhr datasets[J].Ecological Indicators,2009,9(3):422-431.
[16]吴月圆,徐天蜀,岳彩荣.基于MODIS/NDVI的云南省近十年植被动态监测分析[J].绿色科技,2013(10):134-135.[Wu Y Y,Xu T S,Yue C R.Monitoring and analysis of vegetation dynamics in Yunnan Province in recent ten years based on MODIS/NDVI[J].Journal of Green Science and Technology,2013(10):134-135.]
[17]刘珊珊,王建雄,牛超杰,等.基于NDVI的云南省植被覆被变化趋势分析[J].湖北农业科学,2017,56(11):2037-2040.[Liu S S,Wang J X,Niu C J,et al.Trend analysis of vegetation cover change in Yunnan Province based on NDVI[J].Hubei Agricultural Sciences,2017,56(11):2037-2040.]
[18]王金亮,高雁.云南省近20年植被动态变化遥感时序分析[J].云南地理环境研究,2010,22(6):1-7.[Wang J L,Gao Y.RS-Based analysis on vegetation temporal changes in 1982-2002 of Yunnan Province[J].Yunnan Geographic Environment Research,2010,22(6):1-7.]
[19]Pandey P C,Mandal V P,Katiyar S,et al.Geospatial approach to assess the impact of nutrients on rice equivalent yield using MODIS Sensors'based MOD13Q1-NDVI data[J].IEEE Sensors Journal,2015,15(11):6108-6115.
[20]Galv?￡O L S,Breunig F M,Teles T S,et al.Investigation of terrain illumination effects on vegetation indices and VI-derived phenological metrics in subtropical deciduous forests[J].Mapping Sciences&Remote Sensing,2016,53(3):360-381.
[21]熊俊楠,彭超,范春捆,等.基于MODIS时序数据的汶川地震灾区植被覆盖变化监测[J].应用基础与工程科学学报,2018,26(1):60-69.[Xiong J N,Peng C,Fan C K,et al Dynamic monitoring of vegetation fraction change in disaster area of Wenchuan earthquake based on MODISTime-series data[J].Journal of Basic Science and Engineering,2018,26(1):60-69.]
[22]赵舒怡,宫兆宁,刘旭颖.2001-2013年华北地区植被覆盖度与干旱条件的相关分析[J].地理学报,2017,70(2):717-729.[Zhao S Y,Gong,Z N,Liu X Y,et al.Correlation analysis between vegetation coverage and climate drought conditions in North China during 2001-2013[J]Acta Geographica Sinica,2017,70(2):717-729.]
[23]李苗苗.植被覆盖度的遥感估算方法研究[D].北京:中国科学院研究生院(遥感应用研究所),2003.[Li M MThe method of vegetation fraction estimation by remote sensing[D].Beijing:Graduate University of Chinese Academy of Sciences(Institute of Remote Sensing Applications),2003.]
[24]何宝忠,丁建丽,张喆,等.新疆植被覆盖度趋势演变实验性分析[J].地理学报,2016,71(11):1948-1966.[He B Z,Ding J L,Zhang Z,et al.Experimental analysis of spatial and temporal dynamics of fractional vegetation cover in Xinjiang[J].Acta Geographica Sinica,2016,71(11):1948-1966.]
[25]张方.基于ERDAS的交通走廊带植被覆盖度变化研究[D].西安:长安大学,2010.[Zhang F.Research on dynamic change of vegetation coverage in the traffic corridor based on ERDAS[D].Xi'an:Chang'an University,2010.]
[26]贾媛.河保偏矿区植被覆盖度演变趋势与驱动力分析[D].太原:山西大学,2012.[Jia Y.Analysis of the evolution trend of He-Bao-Pian Mining Area FVC and the driving force[D].Taiyuan:Shanxi University,2012.]
[27]王朋.基于3S技术的大渡河上游植被覆盖度时空变化研究[D].成都:四川农业大学,2012.[Wang P.Study on temporal and spatial variation of thevegetation coverage in the upper reaches of Dadu River'based on 3S technology[D].Chengdu:Sichuan Agricultural University,2012.]
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