| 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 |
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| 引用本文： | 张笑鹤,张远东,顾峰雪,刘世荣.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[J].生态学杂志,2011,30(11). |
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| 作者姓名： | 张笑鹤 张远东 顾峰雪 刘世荣 |
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| 作者单位： | 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 |
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| 基金项目： | 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 |
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| 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.
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| 关 键 词： | 灌丛 归一化植被指数 温度 降水量 气候变化 |
Dynamics of shrubs normalized difference vegetation index and its correlations with climatic factors in Southwest China |
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| ZHANG Xiao-he,ZHANG Yuan-dong,GU Feng-xue,LIU Shi-rong.Dynamics of shrubs normalized difference vegetation index and its correlations with climatic factors in Southwest China[J].Chinese Journal of Ecology,2011,30(11). |
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| Authors: | ZHANG Xiao-he ZHANG Yuan-dong GU Feng-xue LIU Shi-rong |
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| Institution: | ZHANG Xiao-he1,ZHANG Yuan-dong1**,GU Feng-xue2,LIU Shi-rong1(1Key Laboratory of Forest Ecology and Environment,State Forestry Administration,Institute of Forest Ecology,Environment and Protection,Chinese Academy of Forestry,Beijing 100091,China,2Key Laboratory of Dryland Agriculture,Ministry of Agriculture,Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Beijing 100081,China) |
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| Abstract: | Based on the 1982-2006 normalized difference vegetation index(NDVI) and meteorological 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 subalpine shrubs at high altitude(subalpine needle-leaf evergreen shrubs,subalpine broadleaf deciduous shrubs,and subalpine sclerophylla broadleaf evergreen shrubs) ... |
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| Keywords: | shrub normalized difference vegetation index temperature precipitation climate change |
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