基于直方图与像元分解模型的森林覆盖度遥感估算
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摘要
森林覆盖度是能够勾描出林分边界的森林覆盖率,定量化的覆盖度信息可体现其水平尺度的时空分异特性。像元分解模型在覆盖度遥感估算中得到了广泛应用,但仍然有很多问题,如很难找到一种树冠覆盖度的纯光谱端元,从而难以高精度地估算树冠覆盖度。为此,基于像元分解模型,结合使用土地利用和土壤类型数据,提出利用直方图法确定模型中不同类型植被——土壤端元参数,对区域尺度森林覆盖度进行估算,并利用三峡库区的历史野外161个样点的实测覆盖度数据进行验证,发现R~2达到0.74～0.85,计算结果比较满意。该方法将为区域尺度高分辨率森林覆盖度的遥感估算提供借鉴。
Forest coverage is the percentage of forest cover for hooking out the forest stand boundary,and quantitative coverage information can be used for describing the temporal and spatial variability of vegetation in the horizontal scale.Pixel decomposition model has been widely used in remote sensing estimation of vegetation coverage.However,there are still many problems.For example,it is difficult to find a pure spectrum of tree canopy coverage to estimate the crown coverage with high accuracy in forest vegetation applications.In this paper,combining land use and soil type data,it is proposed to determine the endmember parameters of the different vegetation-soil types by using the histogram method based on pixel decomposition model for estimating the regional scale forest coverage in the Three Gorges.And the results were verified using the 161 samples of field data in the Three Gorges Reservoir area,R~2 was found to be 0.742 4～0.853 6,the estimated results are satisfactory.This method will provide a reference for remote sensing estimation of high-resolution forest coverage at regional scale.
Forest coverage is the percentage of forest cover for hooking out the forest stand boundary,and quantitative coverage information can be used for describing the temporal and spatial variability of vegetation in the horizontal scale.Pixel decomposition model has been widely used in remote sensing estimation of vegetation coverage.However,there are still many problems.For example,it is difficult to find a pure spectrum of tree canopy coverage to estimate the crown coverage with high accuracy in forest vegetation applications.In this paper,combining land use and soil type data,it is proposed to determine the endmember parameters of the different vegetation-soil types by using the histogram method based on pixel decomposition model for estimating the regional scale forest coverage in the Three Gorges.And the results were verified using the 161 samples of field data in the Three Gorges Reservoir area,R~2 was found to be 0.742 4～0.853 6,the estimated results are satisfactory.This method will provide a reference for remote sensing estimation of high-resolution forest coverage at regional scale.
引文
[1] Li Miaomiao,Wu Bingfang,Yan Changzhen,et al.Estimation of Vegetation Fraction in the Upper Basin of Miyun Reservoir by Remote Sensing[J].Resources Science,2004,26(4):153-159.[李苗苗,吴炳方,颜长珍,等,密云水库上游植被覆盖度的遥感估算[J].资源科学,2004,26(4):153-159.]
[2] Liu Xiaoyan,Liu Cangming,Yang Shengtian,et al.Influences of Shrubs-herbs-arbor Vegetation Coverage on the Runoff based on the Remote Sensing Data in Loess Plateau[J].Acta Geographica Sinica,2014,69(11):1595-1603.[刘晓燕,刘昌明,杨胜天,等.基于遥感的黄土高原林草植被变化对河川径流的影响分析[J].地理学报,2014,69(11):1 595-1 603.]
[3] Liu Junhui,Gao Jixi,Wang Wenjie.Variations of Vegetation Coverage and Its Relations to Global Climate Changes on the Tibetan Plateau during 1981-2005[J].Journal of Mountain Science,2013,31(2):234-242.[刘军会,高吉喜,王文杰.青藏高原植被覆盖变化及其与气候变化的关系[J].山地学报,2013,31(2):234-242.]
[4] Liu Zengjia,Shao Quanqin.Vegetation Coverage Change and Its Response to Climate Change in Three-River Headwaters Region[J].Research of Soil and Water Conservation,2014,21(6):334-339.[刘正佳,邵全琴,三江源地区植被覆盖度变化及其与气候因子的关系[J].水土保持研究,2014,21(6):334-339.]
[5] Greig S.Quantitative Plant Ecology 2nd Edition[M].London:Butterworths,1964.
[6] Chapman S B.Method In Plant Ecology[M].Blackwell:Scientific Publication,1976.
[7] Zhang Renghua.Experimental Remote Sensing Model and Ground Foundation[M].Beijing:Science Press,1996.[张仁华.实验遥感模型及地面基础[M].北京:科学出版社,1996.]
[8] Pu R L,Gong P.Wavelet Trans form Applied to EO-1 Hyperspectral Data for Forest LAI and Crown Closure Mapping[J].Remote Sensing of Environment,2004,91:212-224.
[9] Hu Liangjun,Shao Mingan.Vegetation Coverage Index in Soil and Water Loss Studies[J].Journal of Northwest Forestry College,2001,16(1):40-43.[胡良军,邵明安.论水土流失研究中的植被覆盖度量指标[J].西北林学院学报,2001,16(1):40-43.]
[10] Gill S J,Biging G S,Murphy E C.Modeling Conifer Tree Crown Radius and Estimating Canopy Cover[J].Forest Ecology and Management,2000,126:405-416.
[11] Dong Lixin.New Development of Forest Canopy Height Remote Sensing[J].Remote Sensing Technology and Application,2016,5(31):833-845.[董立新.林分平均高度卫星遥感新进展[J].遥感技术与应用,2016,5(31):833-845.]
[12] Zhang Wenbo,Liu Baoyuan,Wu Jindong.Monitoring of Plant Coverage of Plots by Visual Estimation and Overhead Photograph[J].Bulletin of Soil and Water Conservation,2001,21(6):60-63.[章文波,刘宝元,吴敬东,小区植被覆盖度动态快速测量方法研究[J].水土保持通报,2001,21(6):60-63.]
[13] Xing Z R,Feng Y G,Yang G J,et al.Method of Estimating Vegetation Coverage based on Remote Sensing[J].Remote Sensing Technology and Application,2009,24(6):849-854.
[14] Ma Na,Hu Yunfeng,Zhuang Dafang,et al.Vegetation Coverage Distribution and Its Changes in Plan Blue Banner based on Remote Sensing Data and Dimidiate Pixel Model[J].Scientia Geographica Sinica,2012,32(2):251-256.[马娜,胡云锋,庄大方,张学利.基于遥感和像元二分模型的内蒙古正蓝旗植被覆盖度格局和动态变化[J].地理科学,2012,32(2):251-256.]
[15] Voorde T V D,Vlaeminck J,Canters F.Comparing Different Approaches for Mapping Urban Vegetation Cover from Landsat ETM+ Data:A Case Study on Brussels[J].Sensors,2008,8:3880-3902.
[16] Xiao J F,Moody A.A Comparison of Methods for Estimating Fractional Green Vegetation Cover With in a Desert-to-upland Transition Zone in Central New Mexico,USA[J].Remote Sensing of Environment,2005,98:237-250.
[17] Boyd D S,Foody G M,Ripple W J.Evaluation of Approaches for Forest Cover Estimation in the Pacific Northwest,USA,Using Remote Sensing[J].Applied Geography,2002,22:375-392.
[18] Su L.Optimizing Support Vector Machine Learning for Semi-arid Vegetation Mapping by Using Clustering Analysis[J].Journal of Photogrammetry and Remote Sensing,2009,64:407-413.
[19] Hansen M C,DeFries R S,Townshend J R G,et al.Towards an Operational MODIS Continuous Field of Percent tree Cover Algorithm:Examples Using AVHRR and MODIS Data[J].Remote Sensing of Environment,2002,83:303-319.
[20] Tang Shihao,Zhu Qijiang,Wang Jingdi,et al.Theoretical Basis and Application of Three bands Gradient Difference Vegetation Index[J].Chinese Science:D Series,2003,33:1094-1102.[唐世浩,朱启疆,王锦地,等.三波段梯度差植被指数的理论基础及其应用[J].中国科学:D辑,2003,33:1094-1102.]
[21] Jiang Hong,Wang Xiaoqin,Chen Xing.A Method for Abstraction of Vegetation Density from SPOT Image[J].Geo-information Science,2005,7:113-116.[江洪,汪小钦,陈星.一种以FCD模型从SPOT 影像提取植被覆盖率的方法[J].地球信息科学,2005,7:113-116.]
[22] Jia Kun,Yao Yaojun,Wei Xiangqin,et al.A Review on Fractional Vegetation Cover Estimation Using Remote Sensing[J].Advances in Earth Science,2013,28(7):774-782.[贾坤,姚云军,魏香琴,等.植被覆盖度遥感估算研究进展[J].地球科学进展,2013,28(7):774-782.]
[23] Charles I,Amon K.A Review of Mixture Modeling Technique for Sub-pixel Land Cover Estimation[J].Remote Sensing Reviews,1996,13:161-186.
[24] Zhang Xiwang,Wu Binfang.A Temporal Transformation Method of Fractional Vegetation Cover Derived from High and Moderate Resolution Remote Sensing Data[J].Acta Ecologica Sinica,2015,35(4):1155-1164.[张喜旺,吴炳方,基于中高分辨率遥感的植被覆盖度时相变换方法[J].生态学报,2015,35(4):1155-1164.]
[25] Leprieur C,Verstraete M M,Pinty B.Evaluation of the Performance of Various Vegetation Indices to Retrieve Vegetation Cover from AVHRR Data[J].Remote Sensing Review,1994,10:265-284.
[26] Qi J,Marsett R C,Moran M S,et al.Spatial and Temporal Dynamics of Vegetation in the San Pedro River Basin Area[J].Agricultural and Forest Meteorology,2000,105(1/3):55-68.
[27] DeFries R S,Hansen M C,Townshend J R.Global Continuous Fields of Vegetation Characteristics:A Linear Mixture Model Applied to Multi-year 8 km AVHRR Data[J].International Journal of Remote Sensing,2000,21:1,389-1414.
[28] Chen Jin,Chen Yunhao,He Chunyang,et al.Sub-pixel Model for Vegetation Fraction Estimation based on Land Cover Classification[J].Journal of Remote Sensing,2001,5(6):416-423.[陈晋,陈云浩,何春阳,等.基于土地覆盖分类的植被覆盖率估算亚像元模型与应用[J].遥感学报,2001,5(6):416-423.]
[29] Chen Yunhao,Li Xiaobing,Shi Peijun,et al.Estimating Vegetation Coverage Change Using Remote Sensing Data in Haidian District,Beijing[J].Acta Phytoecologica Sinica,2001,25(5):588-593.[陈云浩,李晓兵,史培军,等.北京海淀区植被覆盖的遥感动态研究[J].植物生态学报,2001,25(5):588-593.]
[30] Zribi M,Garat-Mascle L,Taconet O,et al.Derivation of Wild Vegetation Cover Density Insemi-arid Regions:ERS2/SAR Evaluation[J].International Journal of Remote Sensing,2003,24:1335-1352.
[31] Settle J J,Drake N A.Linear Mixing and the Estimation of Ground Cover Proportions[J].International Journal of Remote Sensing,1993,14:1159-1177.
[32] Ma Chaofei,Ma Jianwen,Buhe A.Quantitative Assessment of Vegetation Coverage Factor in USLE Model Using Remote Sensing Data[J].Bulletin of Soil and Water Conservation,2001,2001,21(4):6-9.[马超飞,马建文,布和敖斯尔.USLE模型中植被覆盖因子的遥感数据定量估算[J].水土保持通,2001,21(4):6-9.]
[33] Liu Guangfeng,Wu Bo,Fan Wenyi,et al.Extraction of Vegetation Coverage in Desertification Regions based on the Dimidiate Pixel Model-A Case Study in Maowusu Sandland[J].Research of Soil and Water Conservation,2007,14(2):268-271.[刘广峰,吴波,范文义,等.基于像元二分模型的沙漠化地区植被覆盖度提取—以马武素沙地为例[J].水土保持研究,2007,14(2):268-271.]
[34] Liu Yu’an,Huang Bo,Cheng Tao,et al.Vegetation Coverage in Upper Huaihe River Basin based on Binary Pixel Model of Remote Sensing[J].Bulletin of Soil and Water Conservation,2012,32(1):93-97.[刘玉安,黄波,程涛,曲乐安,基于像元二分模型的淮河上游植被覆盖度遥感研究[J].水土保持通报,2012,32(1):93-97.]
[35] Li Liangcai,Deng Li,Cao Ying,et al.Vegetation Dynamic Monitoring in Mining Area based on NDVI Serial images and dimidiate pixel model[J].Journal of Central South University of Forestry & Technology,2012,32(6):18-22.[黎良财,邓利,曹颖,肖万娟,陈翠玉,李宏志.基于NDVI像元二分模型的矿区植被覆盖动态监测[J].中南林业科技大学学报,2012,32(6):18-22.]
[36] Hou Jing,Du Lingtong,Ma Jing,et al.A Study on Vegetation Coverage in Ningxia Hui Autonomous Region During Past 20 Years based on Remote Sensing and Dimidiate Pixel Model[J].Bulletin of Soil and Water Conservation,2015,35(5):127-132.[候静,杜灵通,马菁,等,基于RS与像元二分模型的近20a宁夏植被覆盖研究[J].水土保持通报,2015,35(5):127-132.]
[37] Jia K,Liang S L.Global Land Surface Fractional Vegetation Cover Estimation Using General Regression Neural Networks from MODIS Surface Reflectance[J].IEEE Transactions on Geoscience and Remote Sensing,2015,53(9):4787-4796.
[38] Huang C Q,Yang L M,Bruce W,et al.A Strategy for Estimating Tree Canopy Density Using Landsat 7 ETM+ and High Resolution Images over Large Areas[C]//Proceedings of the Third International Conference on Geospatial Information in Agriculture and Forestry,Denver,Colorado,2001,November:5-7.
[39] Feng Zongwei,Wang Xiaoke,Wu Gang.Biomass and Productivity of Forest Ecosystem in China[M].Beijing:Science Press,1999.[冯宗炜,王效科,吴刚.中国森林生态系统的生物量和生产力[M].北京:科学出版社,1999.]
[40] Wu Bingfang,Yuan Chao,Zhu Liang.Characteristics of the Ecology and Environment Monitoring System of the Three Gores Project[J].Resources and Environment in the Yangtze Basin,2011,20(3):339-346.[吴炳方,袁超,朱亮.三峡工程生态与环境监测系统的特点[J].长江流域资源与环境,2011,20(3):339-346.]
[41] Zhu Liang,Wu Bingfang,Zhou Yueming,et al.Design and Implementation of Three Gorges Eco-environmental Spatial Information Search and Analysis System based on WebGIS[J].Journal of Anhui Agricultural Sciences,2009,37(35):17790-17792.[朱亮,吴炳方,周月敏,等.基于WebGIS的三峡生态与环境空间信息查询分析系统的设计与实现[J].安徽农业科学,2009,37(35):17790-17792.]
[42] Markham B L,Barker J L.Spectral Characterization of the Landsat Thematic Mapper Sensors[J].International Journal of Remote Sensing,1985,6:697-716.
[43] Hodgson M E,Shelley B M.Removing the Topographic Effect in Remotely Sensed Imagery[J].1994,ERDAS Monitor,6:4-6.
[44] Zhang Lei,Dong Lixin,Wu Bingfang,et al.Land Cover Change Before and after the Construction of Three Gorges Reservoir Within 10 Years[J].Resources and Environment in the Yangtze Basin,2007,16(1):107-112.[张磊,董立新,吴炳方,周万村,三峡水库建设前后库区10 年土地覆盖变化[J].长江流域资源与环境,2007,16(1):107-112.]
[45] Dong Lixin,Wu Bingfang,Guo Zhenghua,et al.Remote Sensing Monitor and Simulation Prediction of Cultivated and Woody Land Changes for Three Gorges Reservoir Region[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(S2):290-297.[董立新,吴炳方,郭振华,等.三峡库区农林用地变化遥感监测及模拟预测[J].农业工程学报,2009,25(增刊2):290-297.]
[46] Jiapaer G,Chen X,Bao A.A Comparison of Methods for Estimating Fractional Vegetation Cover in Arid Regions[J].Agricultural and Forest Meteorology,2011,151(12):1698-1710.
[47] Rouse J W,Haas R W,Sehell J A,et al.Monitoring the Vernal Advancement and Retro-gradation(Greenvale Effect)of natural vegetation[R].NASA/GSFC Type Ⅲ Final Report,Greenbelt,MD,USA,1974.
[48] Ding Yanling.Research on the Estimation of Fractional Vegetation Cover and the Validation of Fractional Vegetation Cover Product[D].Beijing:University of Chinese Academy of Sciences,2015.[丁艳玲.植被覆盖度遥感估算及其真实性检验研究[D].北京:中国科学院大学,2015.]
[49] Niu Baoru,Liu Junrong,Wang Zhengwei.Remote Sensing Information Extraction based Vegetation Fraction in Semiarid Area[J].Geo-information Science,2005,7(1):84-86.[牛宝茹,刘俊荣,王政伟.干旱区植被覆盖度提取模型的建立[J].地球信息科学,2005,7(1):84-86.]
[50] Sun Jiuhu,Liu Xiaomeng,Li Yougang,et al.Estimation of Vegetation Fraction in Beiyunhe District by Remote Sensing[J].Research of Soil and Water Conservation,2006,13(6):97-99.[孙久虎,刘晓萌,李佑钢,等.北运河地区植被覆盖的遥感估算及变化分析[J].水土保持研究,2006,13(6):97-99.]
[51] Tsai D M.A Fast Thresholding Selection Procedure for Multimodal and Unmoral Histograms[J].Pattern Recognition Letters,1995,16(6):653-66.
[52] Bao Qian,Guo Ping.Comparative Studies on Similarity Measures for Remote Sensing Image Retrieval based on Histogram[J].Journal of Remote Sensing,2006,10(6):893-900.[包倩,郭平,基于直方图的遥感图像相似性检索方法比较[J].遥感学报,2006,10(6):893-900.]
[53] Xu Junfeng,Guo Haitao,Zhang Rue,et al.An Adaptive Edge Detection Method for Multi-Spectral Image Combining Quaternion and Histogram[J].Journal of Geomatics Science and Technology,2015,32(1):61-65.[徐俊峰,郭海涛,张锐,等.一种结合四元数与直方图的多光谱图像自适应边缘检测方法[J].测绘科学技术学报,2015,32(1):61-65.]
[2] Liu Xiaoyan,Liu Cangming,Yang Shengtian,et al.Influences of Shrubs-herbs-arbor Vegetation Coverage on the Runoff based on the Remote Sensing Data in Loess Plateau[J].Acta Geographica Sinica,2014,69(11):1595-1603.[刘晓燕,刘昌明,杨胜天,等.基于遥感的黄土高原林草植被变化对河川径流的影响分析[J].地理学报,2014,69(11):1 595-1 603.]
[3] Liu Junhui,Gao Jixi,Wang Wenjie.Variations of Vegetation Coverage and Its Relations to Global Climate Changes on the Tibetan Plateau during 1981-2005[J].Journal of Mountain Science,2013,31(2):234-242.[刘军会,高吉喜,王文杰.青藏高原植被覆盖变化及其与气候变化的关系[J].山地学报,2013,31(2):234-242.]
[4] Liu Zengjia,Shao Quanqin.Vegetation Coverage Change and Its Response to Climate Change in Three-River Headwaters Region[J].Research of Soil and Water Conservation,2014,21(6):334-339.[刘正佳,邵全琴,三江源地区植被覆盖度变化及其与气候因子的关系[J].水土保持研究,2014,21(6):334-339.]
[5] Greig S.Quantitative Plant Ecology 2nd Edition[M].London:Butterworths,1964.
[6] Chapman S B.Method In Plant Ecology[M].Blackwell:Scientific Publication,1976.
[7] Zhang Renghua.Experimental Remote Sensing Model and Ground Foundation[M].Beijing:Science Press,1996.[张仁华.实验遥感模型及地面基础[M].北京:科学出版社,1996.]
[8] Pu R L,Gong P.Wavelet Trans form Applied to EO-1 Hyperspectral Data for Forest LAI and Crown Closure Mapping[J].Remote Sensing of Environment,2004,91:212-224.
[9] Hu Liangjun,Shao Mingan.Vegetation Coverage Index in Soil and Water Loss Studies[J].Journal of Northwest Forestry College,2001,16(1):40-43.[胡良军,邵明安.论水土流失研究中的植被覆盖度量指标[J].西北林学院学报,2001,16(1):40-43.]
[10] Gill S J,Biging G S,Murphy E C.Modeling Conifer Tree Crown Radius and Estimating Canopy Cover[J].Forest Ecology and Management,2000,126:405-416.
[11] Dong Lixin.New Development of Forest Canopy Height Remote Sensing[J].Remote Sensing Technology and Application,2016,5(31):833-845.[董立新.林分平均高度卫星遥感新进展[J].遥感技术与应用,2016,5(31):833-845.]
[12] Zhang Wenbo,Liu Baoyuan,Wu Jindong.Monitoring of Plant Coverage of Plots by Visual Estimation and Overhead Photograph[J].Bulletin of Soil and Water Conservation,2001,21(6):60-63.[章文波,刘宝元,吴敬东,小区植被覆盖度动态快速测量方法研究[J].水土保持通报,2001,21(6):60-63.]
[13] Xing Z R,Feng Y G,Yang G J,et al.Method of Estimating Vegetation Coverage based on Remote Sensing[J].Remote Sensing Technology and Application,2009,24(6):849-854.
[14] Ma Na,Hu Yunfeng,Zhuang Dafang,et al.Vegetation Coverage Distribution and Its Changes in Plan Blue Banner based on Remote Sensing Data and Dimidiate Pixel Model[J].Scientia Geographica Sinica,2012,32(2):251-256.[马娜,胡云锋,庄大方,张学利.基于遥感和像元二分模型的内蒙古正蓝旗植被覆盖度格局和动态变化[J].地理科学,2012,32(2):251-256.]
[15] Voorde T V D,Vlaeminck J,Canters F.Comparing Different Approaches for Mapping Urban Vegetation Cover from Landsat ETM+ Data:A Case Study on Brussels[J].Sensors,2008,8:3880-3902.
[16] Xiao J F,Moody A.A Comparison of Methods for Estimating Fractional Green Vegetation Cover With in a Desert-to-upland Transition Zone in Central New Mexico,USA[J].Remote Sensing of Environment,2005,98:237-250.
[17] Boyd D S,Foody G M,Ripple W J.Evaluation of Approaches for Forest Cover Estimation in the Pacific Northwest,USA,Using Remote Sensing[J].Applied Geography,2002,22:375-392.
[18] Su L.Optimizing Support Vector Machine Learning for Semi-arid Vegetation Mapping by Using Clustering Analysis[J].Journal of Photogrammetry and Remote Sensing,2009,64:407-413.
[19] Hansen M C,DeFries R S,Townshend J R G,et al.Towards an Operational MODIS Continuous Field of Percent tree Cover Algorithm:Examples Using AVHRR and MODIS Data[J].Remote Sensing of Environment,2002,83:303-319.
[20] Tang Shihao,Zhu Qijiang,Wang Jingdi,et al.Theoretical Basis and Application of Three bands Gradient Difference Vegetation Index[J].Chinese Science:D Series,2003,33:1094-1102.[唐世浩,朱启疆,王锦地,等.三波段梯度差植被指数的理论基础及其应用[J].中国科学:D辑,2003,33:1094-1102.]
[21] Jiang Hong,Wang Xiaoqin,Chen Xing.A Method for Abstraction of Vegetation Density from SPOT Image[J].Geo-information Science,2005,7:113-116.[江洪,汪小钦,陈星.一种以FCD模型从SPOT 影像提取植被覆盖率的方法[J].地球信息科学,2005,7:113-116.]
[22] Jia Kun,Yao Yaojun,Wei Xiangqin,et al.A Review on Fractional Vegetation Cover Estimation Using Remote Sensing[J].Advances in Earth Science,2013,28(7):774-782.[贾坤,姚云军,魏香琴,等.植被覆盖度遥感估算研究进展[J].地球科学进展,2013,28(7):774-782.]
[23] Charles I,Amon K.A Review of Mixture Modeling Technique for Sub-pixel Land Cover Estimation[J].Remote Sensing Reviews,1996,13:161-186.
[24] Zhang Xiwang,Wu Binfang.A Temporal Transformation Method of Fractional Vegetation Cover Derived from High and Moderate Resolution Remote Sensing Data[J].Acta Ecologica Sinica,2015,35(4):1155-1164.[张喜旺,吴炳方,基于中高分辨率遥感的植被覆盖度时相变换方法[J].生态学报,2015,35(4):1155-1164.]
[25] Leprieur C,Verstraete M M,Pinty B.Evaluation of the Performance of Various Vegetation Indices to Retrieve Vegetation Cover from AVHRR Data[J].Remote Sensing Review,1994,10:265-284.
[26] Qi J,Marsett R C,Moran M S,et al.Spatial and Temporal Dynamics of Vegetation in the San Pedro River Basin Area[J].Agricultural and Forest Meteorology,2000,105(1/3):55-68.
[27] DeFries R S,Hansen M C,Townshend J R.Global Continuous Fields of Vegetation Characteristics:A Linear Mixture Model Applied to Multi-year 8 km AVHRR Data[J].International Journal of Remote Sensing,2000,21:1,389-1414.
[28] Chen Jin,Chen Yunhao,He Chunyang,et al.Sub-pixel Model for Vegetation Fraction Estimation based on Land Cover Classification[J].Journal of Remote Sensing,2001,5(6):416-423.[陈晋,陈云浩,何春阳,等.基于土地覆盖分类的植被覆盖率估算亚像元模型与应用[J].遥感学报,2001,5(6):416-423.]
[29] Chen Yunhao,Li Xiaobing,Shi Peijun,et al.Estimating Vegetation Coverage Change Using Remote Sensing Data in Haidian District,Beijing[J].Acta Phytoecologica Sinica,2001,25(5):588-593.[陈云浩,李晓兵,史培军,等.北京海淀区植被覆盖的遥感动态研究[J].植物生态学报,2001,25(5):588-593.]
[30] Zribi M,Garat-Mascle L,Taconet O,et al.Derivation of Wild Vegetation Cover Density Insemi-arid Regions:ERS2/SAR Evaluation[J].International Journal of Remote Sensing,2003,24:1335-1352.
[31] Settle J J,Drake N A.Linear Mixing and the Estimation of Ground Cover Proportions[J].International Journal of Remote Sensing,1993,14:1159-1177.
[32] Ma Chaofei,Ma Jianwen,Buhe A.Quantitative Assessment of Vegetation Coverage Factor in USLE Model Using Remote Sensing Data[J].Bulletin of Soil and Water Conservation,2001,2001,21(4):6-9.[马超飞,马建文,布和敖斯尔.USLE模型中植被覆盖因子的遥感数据定量估算[J].水土保持通,2001,21(4):6-9.]
[33] Liu Guangfeng,Wu Bo,Fan Wenyi,et al.Extraction of Vegetation Coverage in Desertification Regions based on the Dimidiate Pixel Model-A Case Study in Maowusu Sandland[J].Research of Soil and Water Conservation,2007,14(2):268-271.[刘广峰,吴波,范文义,等.基于像元二分模型的沙漠化地区植被覆盖度提取—以马武素沙地为例[J].水土保持研究,2007,14(2):268-271.]
[34] Liu Yu’an,Huang Bo,Cheng Tao,et al.Vegetation Coverage in Upper Huaihe River Basin based on Binary Pixel Model of Remote Sensing[J].Bulletin of Soil and Water Conservation,2012,32(1):93-97.[刘玉安,黄波,程涛,曲乐安,基于像元二分模型的淮河上游植被覆盖度遥感研究[J].水土保持通报,2012,32(1):93-97.]
[35] Li Liangcai,Deng Li,Cao Ying,et al.Vegetation Dynamic Monitoring in Mining Area based on NDVI Serial images and dimidiate pixel model[J].Journal of Central South University of Forestry & Technology,2012,32(6):18-22.[黎良财,邓利,曹颖,肖万娟,陈翠玉,李宏志.基于NDVI像元二分模型的矿区植被覆盖动态监测[J].中南林业科技大学学报,2012,32(6):18-22.]
[36] Hou Jing,Du Lingtong,Ma Jing,et al.A Study on Vegetation Coverage in Ningxia Hui Autonomous Region During Past 20 Years based on Remote Sensing and Dimidiate Pixel Model[J].Bulletin of Soil and Water Conservation,2015,35(5):127-132.[候静,杜灵通,马菁,等,基于RS与像元二分模型的近20a宁夏植被覆盖研究[J].水土保持通报,2015,35(5):127-132.]
[37] Jia K,Liang S L.Global Land Surface Fractional Vegetation Cover Estimation Using General Regression Neural Networks from MODIS Surface Reflectance[J].IEEE Transactions on Geoscience and Remote Sensing,2015,53(9):4787-4796.
[38] Huang C Q,Yang L M,Bruce W,et al.A Strategy for Estimating Tree Canopy Density Using Landsat 7 ETM+ and High Resolution Images over Large Areas[C]//Proceedings of the Third International Conference on Geospatial Information in Agriculture and Forestry,Denver,Colorado,2001,November:5-7.
[39] Feng Zongwei,Wang Xiaoke,Wu Gang.Biomass and Productivity of Forest Ecosystem in China[M].Beijing:Science Press,1999.[冯宗炜,王效科,吴刚.中国森林生态系统的生物量和生产力[M].北京:科学出版社,1999.]
[40] Wu Bingfang,Yuan Chao,Zhu Liang.Characteristics of the Ecology and Environment Monitoring System of the Three Gores Project[J].Resources and Environment in the Yangtze Basin,2011,20(3):339-346.[吴炳方,袁超,朱亮.三峡工程生态与环境监测系统的特点[J].长江流域资源与环境,2011,20(3):339-346.]
[41] Zhu Liang,Wu Bingfang,Zhou Yueming,et al.Design and Implementation of Three Gorges Eco-environmental Spatial Information Search and Analysis System based on WebGIS[J].Journal of Anhui Agricultural Sciences,2009,37(35):17790-17792.[朱亮,吴炳方,周月敏,等.基于WebGIS的三峡生态与环境空间信息查询分析系统的设计与实现[J].安徽农业科学,2009,37(35):17790-17792.]
[42] Markham B L,Barker J L.Spectral Characterization of the Landsat Thematic Mapper Sensors[J].International Journal of Remote Sensing,1985,6:697-716.
[43] Hodgson M E,Shelley B M.Removing the Topographic Effect in Remotely Sensed Imagery[J].1994,ERDAS Monitor,6:4-6.
[44] Zhang Lei,Dong Lixin,Wu Bingfang,et al.Land Cover Change Before and after the Construction of Three Gorges Reservoir Within 10 Years[J].Resources and Environment in the Yangtze Basin,2007,16(1):107-112.[张磊,董立新,吴炳方,周万村,三峡水库建设前后库区10 年土地覆盖变化[J].长江流域资源与环境,2007,16(1):107-112.]
[45] Dong Lixin,Wu Bingfang,Guo Zhenghua,et al.Remote Sensing Monitor and Simulation Prediction of Cultivated and Woody Land Changes for Three Gorges Reservoir Region[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(S2):290-297.[董立新,吴炳方,郭振华,等.三峡库区农林用地变化遥感监测及模拟预测[J].农业工程学报,2009,25(增刊2):290-297.]
[46] Jiapaer G,Chen X,Bao A.A Comparison of Methods for Estimating Fractional Vegetation Cover in Arid Regions[J].Agricultural and Forest Meteorology,2011,151(12):1698-1710.
[47] Rouse J W,Haas R W,Sehell J A,et al.Monitoring the Vernal Advancement and Retro-gradation(Greenvale Effect)of natural vegetation[R].NASA/GSFC Type Ⅲ Final Report,Greenbelt,MD,USA,1974.
[48] Ding Yanling.Research on the Estimation of Fractional Vegetation Cover and the Validation of Fractional Vegetation Cover Product[D].Beijing:University of Chinese Academy of Sciences,2015.[丁艳玲.植被覆盖度遥感估算及其真实性检验研究[D].北京:中国科学院大学,2015.]
[49] Niu Baoru,Liu Junrong,Wang Zhengwei.Remote Sensing Information Extraction based Vegetation Fraction in Semiarid Area[J].Geo-information Science,2005,7(1):84-86.[牛宝茹,刘俊荣,王政伟.干旱区植被覆盖度提取模型的建立[J].地球信息科学,2005,7(1):84-86.]
[50] Sun Jiuhu,Liu Xiaomeng,Li Yougang,et al.Estimation of Vegetation Fraction in Beiyunhe District by Remote Sensing[J].Research of Soil and Water Conservation,2006,13(6):97-99.[孙久虎,刘晓萌,李佑钢,等.北运河地区植被覆盖的遥感估算及变化分析[J].水土保持研究,2006,13(6):97-99.]
[51] Tsai D M.A Fast Thresholding Selection Procedure for Multimodal and Unmoral Histograms[J].Pattern Recognition Letters,1995,16(6):653-66.
[52] Bao Qian,Guo Ping.Comparative Studies on Similarity Measures for Remote Sensing Image Retrieval based on Histogram[J].Journal of Remote Sensing,2006,10(6):893-900.[包倩,郭平,基于直方图的遥感图像相似性检索方法比较[J].遥感学报,2006,10(6):893-900.]
[53] Xu Junfeng,Guo Haitao,Zhang Rue,et al.An Adaptive Edge Detection Method for Multi-Spectral Image Combining Quaternion and Histogram[J].Journal of Geomatics Science and Technology,2015,32(1):61-65.[徐俊峰,郭海涛,张锐,等.一种结合四元数与直方图的多光谱图像自适应边缘检测方法[J].测绘科学技术学报,2015,32(1):61-65.]