广西防城季节性雨林凋落物量时空动态及驱动因素

doi:10.17520/biods.2025326

生物多样性 ›› 2026, Vol. 34 ›› Issue (1): 25326. DOI: 10.17520/biods.2025326 cstr: 32101.14.biods.2025326

• 研究报告: 植物多样性 • 上一篇下一篇

广西防城季节性雨林凋落物量时空动态及驱动因素

高雅^1,2,3, 刘绮³, 刘民峰⁴, 马瑞霞³, 黄甫昭³, 李冬兴³, 向悟生³, 丁涛³, 王斌³, 李先琨³, 郭屹立^2,3*

1. 广西师范大学珍稀濒危动植物生态与环境保护教育部重点实验室, 广西桂林 541006; 2. 广西师范大学广西生态脆弱区环境过程与修复重点实验室, 广西桂林 541006; 3. 广西壮族自治区中国科学院广西植物研究所广西喀斯特植物保育与恢复生态学重点实验室, 广西桂林 541006; 4. 山东省地质测绘院, 济南 250003

收稿日期:2025-08-17 修回日期:2025-11-28 接受日期:2025-12-27 出版日期:2026-01-20 发布日期:2026-01-21
通讯作者: 郭屹立
基金资助:
广西自然科学基金项目(2022GXNSFDA035076); 国家自然科学基金(32071540, 31760141)

Spatiotemporal dynamics of litterfall production and driving factors in the Fangcheng seasonal rainforest, Guangxi

Ya Gao^1,2,3, Qi Liu³, Minfeng Liu⁴, Ruixia Ma³, Fuzhao Huang³, Dongxing Li³, Wusheng Xiang³, Tao Ding³, Bin Wang³, Xiankun Li³, Yili Guo^2,3*

1 Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection of Ministry of Education, Guangxi Normal University, Guilin, Guangxi 541006, China

2 Guangxi Key Laboratory of Environmental Processes and Remediation in Ecologically Fragile Regions, Guangxi Normal University, Guilin, Guangxi 541006, China

3 Guangxi Key Laboratory of Plant Conservation and Restoration Ecology in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi 541006, China

4 Shandong GEO-Surveying and Mapping Institute, Jinan 250003, China

Received:2025-08-17 Revised:2025-11-28 Accepted:2025-12-27 Online:2026-01-20 Published:2026-01-21
Contact: Yili Guo

摘要/Abstract

摘要： 森林凋落物作为森林生态系统物质循环、能量流动和养分平衡的载体, 是森林生态系统的重要组成部分。本研究以广西防城金花茶国家级自然保护区1 ha森林动态监测样地为研究对象, 在其中布设了40个凋落物收集器, 通过6年的连续监测, 分析了该地区凋落物的组成、时空分布特征及驱动因素。结果表明: 广西防城金花茶国家级自然保护区2019–2024年连续6年平均年凋落物量为7,506.38 ± 766.94 kg/ha, 年际波动明显。各组分所占比例大小依次为叶(60.24%) > 枝(19.34%) > 杂物(17.70%) > 繁殖组织(2.72%)。凋落物总量及各组分凋落物量月动态变化规律相似, 均呈三峰型, 峰值分别出现在4月、8月和10月。凋落物收集器5 m邻域范围内, 坡向、土壤温度、树木多样性和胸高断面积之和是该地区森林凋落物总量的主要驱动因素, 且直接正向影响凋落物总量, 而土壤养分通过胸高断面积之和间接影响凋落物总量。连续6年监测结果显示: 广西防城金花茶国家级自然保护区凋落物量季节变化明显, 生物、非生物和土壤因子共同影响着凋落物量的空间分布。

关键词: 季节性雨林, 凋落物量, 凋落物动态, 气候因子, 驱动因素

Abstract

Aims: Forest litterfall, serving as a vector for material cycling, energy flow, and nutrient balance within forest ecosystems, is a vital component of these systems. This study aims to investigate the seasonal dynamics of litterfall production and the drivers of its spatial distribution in the seasonal rainforest of Fangcheng, Guangxi.

Methods: Utilizing a 1-ha forest dynamics plot in Guangxi Fangcheng Golden Camellia National Nature Reserve, as the study site, 40 litterfall collectors were deployed. Through 6 years of continuous monitoring data, we analyzed the region’s litterfall composition, spatiotemporal distribution characteristics, and influencing factors.

Results: The results indicate that the average annual forest litterfall production over the six consecutive years (2019–2024) in Guangxi Fangcheng Golden Camellia National Nature Reserve was 7,506.38 ± 766.94 kg/ha, exhibiting significant interannual fluctuations. The proportion of each component was as follows: leaf (60.24%) > twig (19.34%) > debris (17.70%) > reproductive structures (2.72%). The monthly dynamics of total litterfall and each component showed similar patterns, all exhibiting a tri-modal distribution with peaks observed in April, August, and October. Within a 5 m neighborhood of the litterfall collectors, aspect, soil temperature, tree diversity, and sum of basal area were identified as the primary drivers of forest total litterfall production in this region. These factors exert a direct positive influence on the total litterfall production. In contrast, soil nutrients indirectly impact total litterfall production through their relationship with the sum of basal area.

Conclusion: Continuous 6-year monitoring results reveal that forest litterfall production in Guangxi Fangcheng Golden Camellia National Nature Reserve undergoes pronounced seasonal variation, and that biotic factors, abiotic factors, and soil factors collectively influence the spatial distribution of litterfall.

Key words: seasonal rainforest, litterfall production, litterfall dynamics, climatic factors, driving factors

高雅, 刘绮, 刘民峰, 马瑞霞, 黄甫昭, 李冬兴, 向悟生, 丁涛, 王斌, 李先琨, 郭屹立 (2026) 广西防城季节性雨林凋落物量时空动态及驱动因素. 生物多样性, 34, 25326. DOI: 10.17520/biods.2025326.

Ya Gao, Qi Liu, Minfeng Liu, Ruixia Ma, Fuzhao Huang, Dongxing Li, Wusheng Xiang, Tao Ding, Bin Wang, Xiankun Li, Yili Guo (2026) Spatiotemporal dynamics of litterfall production and driving factors in the Fangcheng seasonal rainforest, Guangxi. Biodiversity Science, 34, 25326. DOI: 10.17520/biods.2025326.

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链接本文: https://www.biodiversity-science.net/CN/10.17520/biods.2025326

https://www.biodiversity-science.net/CN/Y2026/V34/I1/25326

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广西防城季节性雨林凋落物量时空动态及驱动因素

Spatiotemporal dynamics of litterfall production and driving factors in the Fangcheng seasonal rainforest, Guangxi

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