文献类型：期刊文献

英文题名：Spatiotemporal variation in carbon sequestration in the forest ecosystem of Hainan Island over a 30-year period and its driving factors

作者：Pi, Zhihao[1] Liu, Xinyi[2] Wei, Yuan[2] Wang, Xu[1] Zang, Zhuo[3] Song, Xiqiang[4]

第一作者：Pi, Zhihao

通信作者：Wang, X[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guang Zhou, Guang Dong, Peoples R China;[2]Chengdu Technol Univ, Chengdu, Sichuan, Peoples R China;[3]Cent South Univ Forestry & Technol, Changsha, Hunan, Peoples R China;[4]Hainan Univ, Sch Trop Agr & Forestry, Hainan, Hai Kou, Peoples R China

年份：2026

卷号：182

外文期刊名：ECOLOGICAL INDICATORS

收录：;EI(收录号：20260219879641);Scopus(收录号：2-s2.0-105026748416);WOS:【SCI-EXPANDED(收录号:WOS:001661792500001)】；

基金：The authors would like to thank Editage ( www.editage.cn) for En-glish language editing. This research is supported by the Special Fund for Basic Research Expenses of Central public welfare research institutes; the grant number is (CAFYBB2021ZE001) . Xu Wang received financial support from the project.

语种：英文

外文关键词：Tropical forest carbon sequestration; Spatiotemporal dynamics; Driving mechanism; InVEST model; Geographic detector; Dual carbon goals

摘要：Tropical forest ecosystems are critical for global carbon cycling, yet long-term spatiotemporal dynamics of their carbon sequestration and driving mechanisms remain unclear in island ecosystems-particularly for Hainan Island, China's largest tropical forest stronghold. This knowledge gap limits the formulation of targeted forest carbon management strategies to achieve national"dual carbon"goals. To fill this gap, we analyzed the spatiotemporal variation in forest ecosystem carbon sequestration on Hainan Island from 1990 to 2020 and its driving factors, using 30 m land use data, 1 km resolution NDVI/meteorological/human activity data, and field-measured carbon density data as inputs. Methodologically, we integrated the InVEST model, Local Moran's I, and geographic detector techniques.Model accuracy was validated through multiple approaches: (1) The 30 m land use data showed >90 % overall classification accuracy; (2) Forest area derived from land use data was highly consistent with the 2021 Hainan Forest Resource Survey; (3) Carbon storage results overlapped with regional studies with a relative difference < 5 %.Our results showed that: (1) Land use changed substantially-forested land decreased by 3.62 %, agricultural land expanded by 5.27 %, and urbanized land increased by 4.01 % annually; (2) Forest carbon sequestration exhibited a "double-peak" trend, with five stages of change closely linked to forestry policies; (3) Spatially, carbon sequestration showed significant clustering, with high values in central mountainous regions and low values in coastal areas; (4) NDVI, elevation, and slope were the dominant drivers, and the nonlinear enhancement effect of NDVI and elevation had the strongest synergistic impact.This study not only clarifies the long-term dynamics and driving mechanisms of forest carbon sequestration on Hainan Island but also provides a scientific basis for optimizing tropical island forest carbon management and supporting the achievement of national carbon neutrality goals.