基于像元二分模型的典型绿洲区近20年植被覆盖变化及分析
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摘要
随着城市化和规模化节水灌溉的推广,西北干旱内陆绿洲区的地表植被覆盖发生了很大的变化。研究利用遥感技术,选取新疆石河子地区1998年,2007年和2017年的TM/OLI影像数据,基于像元二分模型,分析了三个不同时段的植被覆盖度和植被变化情况。结果表明:1998年,2007年和2017年植被覆盖度分别为52%,60%和48%,呈先增加后降低的趋势;Ⅱ级和Ⅲ级植被覆盖区分别以平均每年1.17%和1.56%的速率递增;Ⅰ级、Ⅳ级和Ⅴ级植被覆盖区分别以平均每年0.05%,0.26%和0.75%的速率递减,总体而言,该地区近20年植被退化面积大于恢复面积。结合土地、气象、水文等资料分析,认为地下水的过度开采和城市化的扩大等人为原因是该地区植被发生退化的主要原因。
Since the promotion of urbanization and large-scale water-saving irrigation,great changes have taken place in the Northwest Inland Oasis of China.Using Remote Sensing earth observation technology,the year of 1998,2007 and 2017 image data(TM/OLI) in the Shihezi region of Xinjiang were selected and combined with Dimidiate Pixel model to estimate the vegetation coverage and vegetation changes,and the transition matrix of vegetation cover area change in each year was calculated.The results showed that vegetation coverage in the study area in 1998,2007 and 2017 were 52%,60%,and 48%,respectively,which indicated a trend of firstly increasing and then decreasing;the vegetation coverage areas of grade II and III were increased 1.17% and 1.56% per year,respectively;the vegetation cover areas of grades I,IV and V decreased at an average rate of 0.05%,0.26% and 0.75% per year,respectively;the area of vegetation degradation in this region was larger than that in the restoration area in the past 20 years.Based on the analysis of land,meteorological and hydrological data,it is concluded that the large-scale use of water-saving irrigation,over-exploitation of groundwater and the expansion of urbanization are the main reasons for vegetation degradation in the area.
Since the promotion of urbanization and large-scale water-saving irrigation,great changes have taken place in the Northwest Inland Oasis of China.Using Remote Sensing earth observation technology,the year of 1998,2007 and 2017 image data(TM/OLI) in the Shihezi region of Xinjiang were selected and combined with Dimidiate Pixel model to estimate the vegetation coverage and vegetation changes,and the transition matrix of vegetation cover area change in each year was calculated.The results showed that vegetation coverage in the study area in 1998,2007 and 2017 were 52%,60%,and 48%,respectively,which indicated a trend of firstly increasing and then decreasing;the vegetation coverage areas of grade II and III were increased 1.17% and 1.56% per year,respectively;the vegetation cover areas of grades I,IV and V decreased at an average rate of 0.05%,0.26% and 0.75% per year,respectively;the area of vegetation degradation in this region was larger than that in the restoration area in the past 20 years.Based on the analysis of land,meteorological and hydrological data,it is concluded that the large-scale use of water-saving irrigation,over-exploitation of groundwater and the expansion of urbanization are the main reasons for vegetation degradation in the area.
引文
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[19]蔡朝朝,安沙舟,蒲智,等.基于TM NDVI的库尔勒市域植被覆盖动态变化[J].草业科学,2015,32(7):1 069-1 078.
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[23]孟婧莹,康博,杨浩北,等.基于GIS平台的地下水埋深与植被盖度响应关系研究[J].节水灌溉,2012,(6):30-34.
[24]范丽红,崔彦军,何清,等.新疆石河子地区近40a来气候变化特征分析[J].干旱区研究,2006,23(2):334-338.
[25]周淑玲,徐涵秋.基于决策树的泉州湾沿海防护林动态变化研究[J].遥感技术与应用,2011,26(5):619-626.
[26]孙倩,阿丽亚·拜都热拉,依力亚斯江·努尔麦麦提.归一化植被指数对陆地水储量和降水变化的响应研究---以塔里木河流域为例[J].中国农村水利水电,2018,(2):54-59.
[27]穆少杰,李建龙,陈奕兆,等.2001-2010年内蒙古植被覆盖度时空变化特征[J].地理学报,2012,67(9):1 255-1 268.
[28]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.
[29]黎良财,邓利,曹颖,等.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):18-23.
[30]宋莎.基于多源遥感数据的植被覆盖度研究[D].成都:四川农业大学,2010.
[31]徐海量,樊自立,禹朴家,等.新疆玛纳斯河流域生态补偿研究[J].干旱区地理(汉文版),2010,33(5):775-783.
[32]蔺彩霞.新疆节水农业让一产更高效[EB/OL].http:∥jiuban.moa.gov.cn/fwllm/qgxxlb/qg/201710/t20171030_5854528.htm,2017-10-30/2018-06-06.
[33]胡广录,赵文智.干旱半干旱区植被生态需水量计算方法评述[J].生态学报,2008,28(12):6 282-6 291.
[34]庞爱萍,孙涛.基于生态需水保障的农业生态补偿标准[J].生态学报,2012,32(8):2 550-2 560.
[2]苏旺德,史正涛,沈盈佳,等.城市水源地植被覆盖度遥感估算与时空变化动态分析[J].中国农村水利水电,2014,(4):39-43.
[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,(3):402-408.
[4]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---以毛乌素沙地为例[J].水土保持研究,2007,14(2):268-271.
[5]汪生斌,祁泽学,贺海松,等.格尔木河流域植被覆盖时空分布规律及影响因素[J].中国农村水利水电,2017,(10):65-69.
[6]方杰诗,周晓霖.基于遥感影像和NDVI阈值法的银川市植被覆盖度反演与监测[J].节水灌溉,2014,(11):68-72.
[7]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,(5):127-132.
[8]丁艳梅,张继贤,王坚,等.基于TM数据的植被覆盖度反演[J].测绘科学,2006,(1):43-45.
[9]李艺梦,祁元,马明国.基于Landsat 8影像的额济纳荒漠绿洲植被覆盖度估算方法对比研究[J].遥感技术与应用.2016,31(3):590-598.
[10]丁峰,魏怀东,陈芳,等.不同时期内陆河两岸地表植被覆盖度变化研究[J].中国农村水利电,2015,(8):74-77.
[11]R R Gillies,W P Kustas,K S Humes.A verification of the“triangle”method for obtaining surface soil water content and energy fluxes from remote measurements of the Normalized Difference Vegetation Index(NDVI)and surface[J],International Journal of Remote Sensing,1997,18(15):3 145-3 166.
[12]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):416-422.
[13]李向婷,白洁,李光录,等.新疆荒漠稀疏植被覆盖度信息遥感提取方法比较[J].干旱区地理,2013,36(3):502-511.
[14]陈丽萍,孙玉军.线性混合像元分解及其在林业中的应用[J].世界林业研究,2017,30(5):39-44.
[15]张成才,罗蔚然,窦小楠,等.应用Landsat8数据改进FCD模型方法[J].国土资源遥感,2017,29(4):33-38.
[16]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.
[17]程红芳,章文波,陈锋.植被覆盖度遥感估算方法研究进展[J].国土资源遥感,2008,(1):13-18.
[18]马娜,胡云锋,庄大方,等.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.
[19]蔡朝朝,安沙舟,蒲智,等.基于TM NDVI的库尔勒市域植被覆盖动态变化[J].草业科学,2015,32(7):1 069-1 078.
[20]J Qi,R C Marsett,M S Moran,et al.Spatial and temporal dynamics of vegetation in the San Pedro River basin area[J].Agricultural&Forest Meteorology,2000,105(1):55-68.
[21]道尔吉,韩钢.新疆石河子市大田膜下滴灌节水技术[J].内蒙古水利,2003,(3):33-35.
[22]郭飞,马娟娟,郑利剑,等.基于氢氧同位素的植物水源区分方法比较[J].节水灌溉,2015,(11):59-63.
[23]孟婧莹,康博,杨浩北,等.基于GIS平台的地下水埋深与植被盖度响应关系研究[J].节水灌溉,2012,(6):30-34.
[24]范丽红,崔彦军,何清,等.新疆石河子地区近40a来气候变化特征分析[J].干旱区研究,2006,23(2):334-338.
[25]周淑玲,徐涵秋.基于决策树的泉州湾沿海防护林动态变化研究[J].遥感技术与应用,2011,26(5):619-626.
[26]孙倩,阿丽亚·拜都热拉,依力亚斯江·努尔麦麦提.归一化植被指数对陆地水储量和降水变化的响应研究---以塔里木河流域为例[J].中国农村水利水电,2018,(2):54-59.
[27]穆少杰,李建龙,陈奕兆,等.2001-2010年内蒙古植被覆盖度时空变化特征[J].地理学报,2012,67(9):1 255-1 268.
[28]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.
[29]黎良财,邓利,曹颖,等.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):18-23.
[30]宋莎.基于多源遥感数据的植被覆盖度研究[D].成都:四川农业大学,2010.
[31]徐海量,樊自立,禹朴家,等.新疆玛纳斯河流域生态补偿研究[J].干旱区地理(汉文版),2010,33(5):775-783.
[32]蔺彩霞.新疆节水农业让一产更高效[EB/OL].http:∥jiuban.moa.gov.cn/fwllm/qgxxlb/qg/201710/t20171030_5854528.htm,2017-10-30/2018-06-06.
[33]胡广录,赵文智.干旱半干旱区植被生态需水量计算方法评述[J].生态学报,2008,28(12):6 282-6 291.
[34]庞爱萍,孙涛.基于生态需水保障的农业生态补偿标准[J].生态学报,2012,32(8):2 550-2 560.