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应用生态学报 ›› 2024, Vol. 35 ›› Issue (6): 1543-1552.doi: 10.13287/j.1001-9332.202406.020

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林冠穿透雨空间异质性及其时间稳定性特征的全球量化

王倩1, 袁川2,3*, 张亚峰4, 胡彦婷5, 王一6, 郭立7, 刘琴8, 蔡忠银9   

  1. 1浙江农林大学林业与生物技术学院, 杭州 311300;
    2西南大学地理科学学院, 重庆金佛山喀斯特生态系统国家野外科学观测研究站, 重庆 400715;
    3陕西延安森林生态系统国家定位观测研究站, 北京 100085;
    4中国科学院西北生态环境资源研究院沙坡头沙漠研究试验站, 兰州 730000;
    5中南林业科技大学生命科学与技术学院, 长沙 410004;
    6国际竹藤中心竹藤资源与环境研究所, 国家林业与草原局/北京市共建竹藤科学与技术重点实验室, 北京 100102;
    7四川大学山区河流保护与治理全国重点实验室, 成都 610065;
    8南京信息工程大学地理科学学院, 南京 210044;
    9云南大学国际河流与生态安全研究院, 昆明 650500
  • 收稿日期:2023-12-25 接受日期:2024-04-08 出版日期:2024-06-18 发布日期:2024-12-18
  • 通讯作者: *E-mail: yuanchuan03@163.com
  • 作者简介:王 倩, 女, 1998年生, 硕士研究生。主要从事半干旱区典型灌木降水再分配研究。E-mail: wq22085@stu.zafu.edu.cn
  • 基金资助:
    西南大学科研启动项目(SWU-KR24003)、城市与区域生态国家重点实验室开放基金项目(SKLURE2022-2-4)和国家自然科学基金项目(41901038)

Global quantification of the spatial variability and temporal stability of throughfall

WANG Qian1, YUAN Chuan2,3*, ZHANG Yafeng4, HU Yanting5, WANG Yi6, GUO Li7, LIU Qin8, CAI Zhongyin9   

  1. 1College of Forestry and Biotechnology, Zhejiang A& F University, Hangzhou 311300, China;
    2Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station, School of Geographical Sciences, Southwest University, Chongqing 400715, China;
    3Shaanxi Yan’an Forest Ecosystem National Observation and Research Station, Beijing 100085, China;
    4Shapotou Desert Research and Experiment Station, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730000, China;
    5Faculty of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China;
    6Institute of Resources and Environment, International Centre for Bamboo and Rattan, Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Beijing 100102, China;
    7State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China;
    8School of Geographic Sciences, Nanjing University of Information Science & Technology, Nanjing 210044, China;
    9Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China
  • Received:2023-12-25 Accepted:2024-04-08 Online:2024-06-18 Published:2024-12-18

摘要: 林冠穿透雨空间异质性(即不同冠层位置穿透雨量的非均一性)及其在一定时间段内的持续性(即时间稳定性)关系着土壤水分补给数量和效率,通过影响资源有效性作用于植物个体竞争和群落演替。本研究基于关键词检索并分析整理了Web of Science和中国知网数据库2000—2022年发表的554篇相关主题论文数据,量化并对比了全球不同气候带和植物功能型的穿透雨数量、空间异质性及其时间稳定性特征。结果表明: 全球范围内旱区穿透雨比例(72.0%±13.6%)小于湿润(75.1%±9.3%)和半湿润区(79.9%±10.4%),热带(80.9%±14.6%)高于暖温带(74.2%±7.5%)和冷温带(74.1%±14.6%),灌木(68.9%±14.9%)小于乔木(76.7%±9.1%),但阔叶植物(75.2%±11.1%)和针叶植物(75.1%±9.9%)、常绿植物(76.7%±10.0%)和落叶植物(74.7%±11.9%)的林冠穿透雨比例接近,其空间变异系数在上述不同干湿区、温度带和植物功能型之间差异均不显著。穿透雨空间分布格局易保持相对稳定,冠层结构是影响其时间稳定性的主导因子,但缺乏不同时间尺度上典型地理单元(即地理环境条件基本一致的空间单元)之间的对比。建议未来研究通过向上延展至基于全球的空间尺度规律汇总,向下延展至基于过程的时间尺度机制分析,刻画穿透雨空间分布动态变化,并统一观测规范来增进不同研究之间的可参比性,以高效推进林冠穿透雨研究,为保护自然、管理人工、恢复受损生态系统提供生态水文依据。

关键词: 穿透雨, 空间分布, 时间稳定性, 气候带, 植物功能型

Abstract: Spatial variability of throughfall (i.e. the non-uniform characteristics of throughfall at different canopy positions) and its temporal persistence (i.e. time stability) are related to the quantity and efficiency of soil moisture replenishment, and affect plant competition and community succession dynamics by affecting resource availability. We carried out a meta-analysis with 554 papers (from 2000 to 2022) retrieved from Web of Science and China National Knowledge Infrastructure (CNKI) based on keyword search, quantified and compared the amount, spatial heterogeneity, and temporal stability characteristics of penetrating rain in different climate zones and plant functional types. Our results that throughfall proportion was lower in arid regions (72.0%±13.6%) than humid (75.1%±9.3%) and semi-humid areas (79.9%±10.4%). Cold climates had lower values (74.1%±14.6%) than temperate (74.2%±7.5%) and tropical climates (80.9%±14.6%). Shrubs (68.9%±14.9%) generally had lower throughfall proportion than trees (76.7%±9.1%). Broad-leaved trees (75.2%±11.1%) and conifers (75.1%±9.9%) showed similar throughfall proportions, as did evergreen (76.7%±10.0%) and deciduous species (74.7%±11.9%). Additionally, spatial variability (coefficient of variation) did not significantly differ across rainfall zones, temperature zones, or vegetation types. The spatial distribution of throughfall was relatively stable. Canopy structure was the dominant factor affecting temporal stability of throughfall. However, there was a lack of comparison between typical geographic units (i.e. spatial units with basically consistent geographical environmental conditions) at various temporal scales. Future research should expand upwards to the summary of global spatial scale rules and downwards to the analysis of process based temporal scale mechanisms, to depict the dynamic distribution of penetrating rain and unify observation standards to enhance comparability of different studies, in order to efficiently promote research on canopy penetrating rain and provide ecological and hydrological basis for protecting nature, managing artificial activities, and restoring degraded ecosystems.

Key words: throughfall, spatial distribution, temporal stability, climate zone, plant functional trait