25年来秦岭NDVI指数的气候响应
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摘要
利用1982—2006年的植被指数和研究区域内4个气象站的气温、降水数据,研究陕西秦岭地区植被指数、气温、降水的多年变化趋势,分析植被指数与气温和降水的相关关系。利用植被类型数据分析不同植被种类的NDVI与不同气候因子的相关程度。结果表明,1982—2006年,研究区域年均气温有明显的上升,升幅达2.1℃,而年总降水量每10年下降约72 mm,秦岭地区NDVI略有上升。整体而言,植被指数的变化与气温之间的相关性在中部最大,向东西两侧递减;与降水之间的相关性在中部最小,向东西两侧递增。气温对果树园、经济林的影响最大,降水对阔叶林的影响最大。气温是影响该地区植被指数变化的主要因素。
Using vegetation index and four meteorological stations' air temperature,precipitation data of the research area in 1982 to2006,the paper researches vegetation index,the temperature and precipitation change tendency of qinling region in shaanxi,analyzes the correlation between vegetation index and the temperature or precipitation. Using the vegetation type data analysize the related degree between different vegetation types of NDVI and different climate factors. The results show that from 1982 to 2006,the research area average annual temperature is an obvious rise,rise up to 2.1℃,the annual total rainfall of every 10 years down about 72 mm,NDVI in qinling region increases slightly. Overall,the correlation between the changes of vegetation index and temperature in the middle region is the largest,decreasing on both sides and the correlation between rainfall is minimum in the middle,increment on both sides.Temperature has the greatest influence on orchard and economic forest,precipitation has the greatest impact on broad-leaved forests.The temperature is the main factors influencing the changes of vegetation index in the region.
Using vegetation index and four meteorological stations' air temperature,precipitation data of the research area in 1982 to2006,the paper researches vegetation index,the temperature and precipitation change tendency of qinling region in shaanxi,analyzes the correlation between vegetation index and the temperature or precipitation. Using the vegetation type data analysize the related degree between different vegetation types of NDVI and different climate factors. The results show that from 1982 to 2006,the research area average annual temperature is an obvious rise,rise up to 2.1℃,the annual total rainfall of every 10 years down about 72 mm,NDVI in qinling region increases slightly. Overall,the correlation between the changes of vegetation index and temperature in the middle region is the largest,decreasing on both sides and the correlation between rainfall is minimum in the middle,increment on both sides.Temperature has the greatest influence on orchard and economic forest,precipitation has the greatest impact on broad-leaved forests.The temperature is the main factors influencing the changes of vegetation index in the region.
引文
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[17]李运刚,何大明.红河流域NDVI时空变化及其与气候因子的关系[J].山地学报,2009,27(3):333-340.
[2]LIU W T,KOGAN F.Monitoring Brazilian soybean production using NOAA/AVHRR based vegetation condition indices[J].International Journal of Remote Sensing,2002,23(6):1161-1179.
[3]GITELSON A A,KOGAN F,ZAKARIN E,et al.Using AVHRR data for quantitive estimation of vegetation conditions:calibration and validation[J].Advances in Space Research,1998,22(5):673-676.
[4]马明国,角媛梅,程国栋.利用NOAA-CHAIN监测近10a来中国西北土地覆盖的变化[J].冰川冻土,2002,24(1):68-72.
[5]TUCKER J.Red and photo graphic infrared linear combinations for monitoring vegetation[J].Remote Sensing of the Environment,1979,8(2):127-150.
[6]汪松,王斌,刘长征,等.利用Landsat时序NDVI数据进行新疆石河子垦区灌溉作物分类[J].测绘通报,2016(9):56-59.
[7]马志勇,沈涛,张军海,等.基于植被覆盖度的植被变化分析[J].测绘通报,2007(3):45-48.
[8]辛景峰,宇振荣,DRIESSEN P M.利用NOAA NDVI数据集监测冬小麦生育期的研究[J].遥感学报,2001,5(6):442-447.
[9]朴世龙,方精云.1982-1999年青藏高原植被净第一性生产力及其时空变化[J].自然资源学报,2002,17(3):373-380.
[10]徐雨晴,陆佩玲,于强.气候变化对植物物候影响的研究进展[J].资源科学,2004,26(1):129-137.
[11]齐述华,王长耀,牛铮.利用气温植被旱情指数(TVDI)进行全国旱情监测研究[J].遥感学报,2003,7(5):420-427.
[12]孙睿,刘昌明,李小文.利用累积NDVI估算黄河流域年蒸散量[J].自然资源学报,2003,18(2):155-160.
[13]杨胜天,刘昌明,王鹏新.黄河流域土壤水分遥感估算[J].地理科学进展,2003,22(5):454-462.
[14]崔林丽,史军.中国东部植被NDVI对气温和降水的旬响应特征[J].地理学报,2009,64(7):850-860.
[15]戴声佩,张勃,王海军.中国西北地区植被NDVI的时空变化及其影响因子分析[J].地球信息科学学报,2010,12(3):315-321.
[16]陈操操,谢高地,甄霖,等.泾河流域植被覆盖动态变化特征及其与降雨的关系[J].生态学报,2008,28(3):925-938.
[17]李运刚,何大明.红河流域NDVI时空变化及其与气候因子的关系[J].山地学报,2009,27(3):333-340.