文献类型：期刊文献

中文题名：西南地区灌丛归一化植被指数动态及其与气候因子的相关性

英文题名：Dynamics of shrubs normalized difference vegetation index and its correlations with climatic factors in Southwest China

作者：张笑鹤[1] 张远东[1] 顾峰雪[2] 刘世荣[1]

第一作者：张笑鹤

机构：[1]中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京100091;[2]中国农业科学院农业环境与可持续发展研究所,农业部旱作节水农业重点开放实验室,北京100081

年份：2011

卷号：30

期号：11

起止页码：2577-2583

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(31070398);林业公益性行业重大科研专项(201104006,200804001);国家“十一五”科技支撑计划项目(2006BAD03A0404)资助

语种：中文

中文关键词：灌丛;归一化植被指数;温度;降水量;气候变化

外文关键词：shrub ; normalized difference vegetation index ; temperature ; precipitation ; climatechange.

分类号：Q948.1

摘要：基于西南地区1982—2006年的归一化植被指数(NDVI)和气象数据,使用ANUS-PLIN、ArcGIS和SPSS软件分析了该区6种灌丛类型NDVI的季节和年际变化,及其与气候因子的相关性。结果表明:25年来,3种高海拔亚高山灌丛(亚高山常绿针叶灌丛、亚高山落叶阔叶灌丛、亚高山革质常绿阔叶灌丛)年均NDVI显著增大,其他3种中低海拔灌丛(温带落叶灌丛、亚热带热带旱生肉质多刺灌丛和亚热带热带常绿落叶阔叶灌丛)增加不显著;除亚热带热带旱生肉质灌丛外,其他5种灌丛年均温均呈显著增加趋势;亚高山常绿针叶灌丛年降水量呈增加趋势,但不显著;其他5种灌丛年降水量呈减少趋势,其中温带落叶灌丛减少显著。3种亚高山灌丛月NDVI与温度和降水均达到极显著正相关,且与前一个月的温度、降水相关性最大,存在明显的滞后效应;位于中低海拔的其他3种灌丛NDVI与温度和降水的相关性明显降低。在高海拔亚高山区,气候变暖导致了年均NDVI增加,温度是3种亚高山灌丛NDVI年际变化的驱动因子;在中低海拔,温度的显著上升没有引起NDVI的显著增加。
Based on the 1982-2006 normalized difference vegetation index （NDVI） and meteor- ological dataset of Southwest China, and by using ANUSPLIN, ArcGIS, and SPSS software, this paper analyzed the seasonal and annual variations of six shrubs＇ NDVI and their correlations with climatic factors in the area. In the past 25 years, the annual average NDVI of three suhalpine shrubs at high altitude （subalpine needle-leaf evergreen shrubs, subalpine broadleaf deciduous shrubs, and subalpine sclerophylla broadleaf evergreen shrubs） increased significantly, whereas that of the other three shrubs at mid and low altitudes （ deciduous shrubs in temperate zone, ever- green xeromorphic succulent thorny shrubs in subtropical and tropical zones, and broadleaf ever- green and deciduous shrubs in subtropical and tropical zones） had less increase. The mean annu- al air temperature in the six shrubs except the evergreen xeromorphic succulent thorny shrubs in subtropical and tropical zones had a significant increase, and the mean annual precipitation pres- ented an increasing trend in subalpine needle-leaf evergreen shrubs but a decreasing trend in the other five shrubs, reached a significant level in the deciduous shrubs in temperate zone. In the three subalpine shrubs at high altitude, the monthly NDVI was significantly positively correlated with mean monthly air temperature and monthly precipitation, and the correlations with the previous month＇ s mean air temperature and precipitation were the highest, showing a remarkable lag effect. For the other three shrubs at mid and low altitudes, the correlations of NDVI with air temperature and precipitation decreased obviously. At the high altitude, climate warming caused an increase of mean annual NDVI, suggesting that air temperature was the driving factor of the annual NDVI variation of the three subalpine shrubs. At the mid and low altitudes, the significant increase of air temperature didn＇ t cause a significant increase of NDVI.