Spatiotemporal Dynamics and Multi-Path Driving Mechanisms of Vegetation Net Primary Productivity in Tibetan Plateau (2001-2022): Coupling Analysis of Geodetector and PLS-SEM
文献类型：期刊论文
| 作者 | Wang, Jiayu1; Pan, Huanli4; Sheng, Shuangqing3; Song, Wei2 |
| 刊名 | LAND
 |
| 出版日期 | 2026-02-03 |
| 卷号 | 15期号:2页码:262 |
| 关键词 | net primary productivity spatiotemporal patterns driving mechanisms land use change Tibetan Plateau China |
| DOI | 10.3390/land15020262 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | The Tibetan Plateau is highly sensitive to global climate change and characterized by pronounced ecological fragility, making vegetation net primary productivity (NPP) a key indicator for assessing ecosystem functioning and regional ecological security. This study aims to characterize the spatiotemporal dynamics of NPP and to disentangle the multiple natural and land-use drivers shaping its variability across the Tibetan Plateau. MODIS-derived NPP data for the period 2001-2022 are integrated with multi-source datasets on climate, topography, normalized difference vegetation index (NDVI), and land use (CLCD), and analyzed using trend and correlation analyses, land-use transfer matrices, an optimal-parameter geographical detector, and partial least squares structural equation modeling (PLS-SEM). The results indicate that NPP exhibits a significant but fluctuating upward trend (0.52 gC & centerdot;m(-2)& centerdot;a(-1), p < 0.01), with higher values in the southeast and lower values in the northwest, the Yunnan Plateau evergreen broadleaf and pine forest region (VA5) and the southern Himalayan montane forest region (VA6) function as high-value centers, and regions such as the Kunlun high-cold desert region (HID1) represent low-value centers. The mutual conversion between forestland and grassland and bare land constitutes a key process driving regional NPP changes, with the net expansion of forestland making a substantial contribution to NPP increases (net gain of 2606.88 TgC). Geographic detector analysis indicates that NDVI (q = 0.741) and land use type (q = 0.741) are the primary factors governing the spatial differentiation of NPP, followed by precipitation, slope, and temperature. Moreover, interactions between any two factors enhance their explanatory power, with the interaction between aspect and land use type exhibiting the strongest effect (q approaching 1). PLS-SEM path analysis further quantifies the driving pathways, revealing that mean annual precipitation and land use type are the most direct drivers of NPP, while climatic and topographic factors influence NPP indirectly through their effects on vegetation cover and land use type. This study advances the understanding of the multifactorial driving mechanisms of ecosystem productivity on the Tibetan Plateau and provides a scientific basis for zoned and differentiated ecological restoration and climate adaptation strategies. |
| URL标识 | 查看原文 |
| WOS关键词 | CHINA ; CLIMATE ; NPP |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001702362900001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221352]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Song, Wei |
| 作者单位 | 1.Beijing Normal Univ, Fac Geog Sci, Sch Nat Resources, Beijing 100875, Peoples R China; 2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.China Agr Univ, Coll Land Sci & Technol, Beijing 100193, Peoples R China; 4.Southwest Univ Sci & Technol, Sch Civil Engn & Architecture, Mianyang 621010, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wang, Jiayu,Pan, Huanli,Sheng, Shuangqing,et al. Spatiotemporal Dynamics and Multi-Path Driving Mechanisms of Vegetation Net Primary Productivity in Tibetan Plateau (2001-2022): Coupling Analysis of Geodetector and PLS-SEM[J]. LAND,2026,15(2):262. |
| APA | Wang, Jiayu,Pan, Huanli,Sheng, Shuangqing,&Song, Wei.(2026).Spatiotemporal Dynamics and Multi-Path Driving Mechanisms of Vegetation Net Primary Productivity in Tibetan Plateau (2001-2022): Coupling Analysis of Geodetector and PLS-SEM.LAND,15(2),262. |
| MLA | Wang, Jiayu,et al."Spatiotemporal Dynamics and Multi-Path Driving Mechanisms of Vegetation Net Primary Productivity in Tibetan Plateau (2001-2022): Coupling Analysis of Geodetector and PLS-SEM".LAND 15.2(2026):262. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。