干旱区研究 ›› 2024, Vol. 41 ›› Issue (12): 2143-2153.doi: 10.13866/j.azr.2024.12.15 cstr: 32277.14.AZR.20241215
张倩1,2(), 曹广超1,2,3(), 张乐乐1,2, 赵美亮1,2
收稿日期:
2024-04-21
修回日期:
2024-10-14
出版日期:
2024-12-15
发布日期:
2024-12-20
通讯作者:
曹广超. E-mail: caoguangchao@qhnu.edu.cn作者简介:
张倩(1998-),女,硕士研究生,主要从事遥感与地理信息系统应用. E-mail: 18309740663@163.com
基金资助:
ZHANG Qian1,2(), CAO Guangchao1,2,3(), ZHANG Lele1,2, ZHAO Meiliang1,2
Received:
2024-04-21
Revised:
2024-10-14
Published:
2024-12-15
Online:
2024-12-20
摘要:
为探究祁连山南坡植被绿度时空变化及其对气候变化和人类活动的响应,基于GEE平台,利用算法和遥感技术,通过Sen趋势、变异系数、Hurst指数、ArcGIS空间分析以及多元回归残差等分析方法,整合多源数据产品全面解析祁连山南坡植被绿度变化的时空特征,并综合评估其未来变化趋势及稳定性,在此基础上深入探讨气候变化和人类活动对植被绿度的影响程度。结果显示:(1) 2001—2020年祁连山南坡的植被绿度总体呈上升趋势,且空间差异性显著。从稳定性分析来看,其变异系数介于0~0.84,均值为0.09,植被绿度的变化总体上处于相对稳定的状态,并且其展现出向好的态势。(2) 在影响因素方面,降水和气温均与植被绿度呈正向促进关系,其中与气温的相关性更为显著,并且通过显著性检验的区域占研究区的95.7%,表明气温对植被绿度变化起主要促进作用。(3) 人类活动对植被绿度的变化起到了积极的推动作用。整体来看,植被绿度的变化是气候变化和人类活动共同作用的结果,其中气候变化和人类活动对研究区植被绿度的相对贡献率分别为36.68%和63.32%,人类活动的相对贡献率大于气候变化,这与实施的生态工程密切相关。
张倩, 曹广超, 张乐乐, 赵美亮. 祁连山南坡植被绿度时空变化及其对气候变化和人类活动的响应[J]. 干旱区研究, 2024, 41(12): 2143-2153.
ZHANG Qian, CAO Guangchao, ZHANG Lele, ZHAO Meiliang. Spatiotemporal changes in vegetation greenness on the southern slopes of the Qilian Mountains and their responses to climate change and human activities[J]. Arid Zone Research, 2024, 41(12): 2143-2153.
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