近30 a青海省植被变化及其气候驱动因子分析

被引：24

作者：

韩辉邦 ^{[1
,2
]}

马明国 ^{[3
]}

马守存 ^{[4
]}

周万福 ^{[2
]}

康晓燕 ^{[2
]}

张博越 ^{[2
]}

赵慧芳 ^{[1
]}

机构：

[1] 青海省防灾减灾重点实验室

[2] 青海省人工影响天气办公室

[3] 西南大学地理科学学院

[4] 青海省气象服务中心

来源：

干旱区研究 | 2017年 / 34卷 / 05期

关键词：

植被覆盖; 空间变化; 气候因子; 气温; 降水; 青海;

D O I：

10.13866/j.azr.2017.05.27

中图分类号：

Q948.112 [气候因素];

学科分类号：

071012 ; 0713 ;

摘要：

基于1982—2013年GIMMS NDVI 3g数据集及青海省50个国家气象观测站同期气象资料,利用趋势分析、相关分析方法,对青海省植被覆盖时空变化特征及其驱动因子进行分析。结果表明:(1)受气候及地形地貌影响,青海省植被覆盖空间差异明显,总体呈现从东南向西北递减趋势。(2)近30 a,青海省气温、降水呈上升趋势,气候由冷干向暖湿化转变。植被覆盖呈现整体升高,局部退化趋势。植被的年代际变化显示,青海省植被覆盖在近30 a呈现增加—减小—再增加的趋势。(3)青海省生长季(4—9月)植被受气温和降水共同影响,除个别站点外,全省NDVI与气温和降水均呈显著正相关关系,与降水相比,NDVI与气温的相关性更强,气温是影响青海省植被变化的主要气候因子。

引用

页码：1164 / 1174

页数：11

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