大兴安岭植被NDVI变化及其对气候的响应

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英文篇名：Variation of vegetation NDVI and its response to climate change in the Greater Khingan Range 作者：曲学斌 ; 张煦明 ; 孙卓 英文作者：QU Xue-bin;ZHANG Xu-ming;SUN Zhuo;Lanzhou Institute of Arid Meteorology,China Meteorological Administration/Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province/Key Laboratory of Arid Climate Change and Reducing Disaster of China Meteorological Administration;Hulun Buir Meteorological Service;Panjin Meteorological Service; 关键词：NDVI ; 大兴安岭 ; 气候响应 英文关键词：NDVI;;Greater Khingan Range;;Climate Response 中文刊名：LNQX 英文刊名：Journal of Meteorology and Environment 机构：中国气象局兰州干旱气象研究所/甘肃省干旱气候变化与减灾重点实验室/中国气象局干旱气候变化与减灾重点实验室;呼伦贝尔市气象局;盘锦市气象局; 出版日期：2019-04-15 出版单位：气象与环境学报 年：2019 期：v.35 基金：干旱气象科学研究基金(IAM201706);; 内蒙古自治区气象局青年基金项目(nmqnqx201704);; 内蒙古自治区遥感创新团队共同资助 语种：中文; 页：LNQX201902011 页数：7 CN：02 ISSN：21-1531/P 分类号：79-85

摘要

利用S-G(Savitsky-Golay)滤波对2000—2016年呼伦贝尔市境内的大兴安岭植被NDVI序列进行逐栅格重构并剔除突变点,结合大兴安岭海拔、坡向、坡度等地理因子和气温、降水等气象因子,分析大兴安岭植被生长季NDVI的变化及其对气候的响应。结果表明:大兴安岭植被NDVI生长季均值呈上升趋势,平均增速为0. 029/10 a。植被NDVI随海拔的增加呈现先缓慢减小后迅速增加的趋势,随坡向变化不大,随坡度的增加而增加。植被NDVI的生长季均值与1 a前和2 a年前的降水呈现显著的正相关,具有明显的滞后性。在每年植被恢复生长初期各海拔植被均与气温呈现极显著的正相关,年内植被NDVI与降水的相关性在垂直方向上存在较大差异。
        Vegetation NDVI series from 2000 to 2016 in the Greater Khingan Range was reconstructed using the SG filter method. The variations of vegetation NDVI during the growing season and their responses to climate were analyzed considering the factors of elevation,slope orientation,slope angle,temperature,and precipitation. The results showthat the average of vegetation NDVI during growing season increased by 0. 029 per decade. The vegetation NDVI decreased slowly first,then increased rapidly with the increase of elevation. The vegetation NDVI showed an increasing trend with the increase of the slope. The variation of vegetation NDVI showed no obvious regularity with the change of slope orientation. The averaged of vegetation NDVI during growing season showed a significant positive correlation with precipitation of one year and two years ago,indicating that NDVI had obvious hysteresis compared to precipitation. There was a significant positive correlation between the vegetation NDVI at different elevations with the air temperature in the early days of vegetation restoration. There is a significant difference for correlation between vegetation NDVI and precipitation within a year in the vertical direction.

引文

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