陆地生态系统植物碳、氮和磷含量对增温的响应:Meta分析  

Responses of plant carbon,nitrogen,and phosphorus content in terrestrial ecosystems to warming:A Meta-analysis

作　　者：黄路路 周慧玲 王启帆 赵欣然 陈锦辉 游成铭 徐琳 谭波[1] 徐振锋[1] 徐红伟 HUANG Lulu;ZHOU Huiling;WANG Qifan;ZHAO Xinran;CHEN Jinhui;YOU Chengming;XU Lin;TAN Bo;XU Zhenfeng;XU Hongwei(Carbon Sink Research Center,College of Forestry,Sichuan Agri-cultural University/Sichuan Key Laboratory of Upper Yangtze River Forestry Ecological Engineering,Chengdu 611130,China)

机构地区：[1]四川农业大学林学院碳汇研究中心/长江上游林业生态工程四川省重点实验室,成都611130

出　　处：《应用生态学报》2024年第9期2527-2534,共8页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(42307571);四川农业大学科研启动费(2222996046)资助。

摘　　要：本研究采用Meta分析方法,整合发表在全球的55篇文章的264组数据,研究增温时间和增温强度对植物碳、氮、磷含量的影响。结果表明:增温显著降低植物地上碳(效应值为-1.7%)、地下碳(-4.0%)、枯落物碳(-3.7%)、地上氮(-7.0%)和枯落物氮(-6.4%)含量。在生态系统类型水平上,增温显著降低草地植物地上碳(-0.8%)、地上氮(-5.9%)、地下碳(-7.4%)、枯落物碳(-2.1%)和枯落物氮(-13.4%)含量,而显著增加灌丛植物地上碳(2.7%)和森林的枯落物磷(42.4%)含量。短期增温(<5年)降低植物地上碳(-0.4%)、地上磷(-0.4%)和枯落物氮(-13.4%)含量,而中长期增温(5~10年)增加植物地上碳(0.6%)、地上磷(20.2%)和枯落物氮(6.2%)含量。0~2℃增温强度增加植物地上磷(10.1%)和地下磷(27.4%)含量,而>2℃增温强度降低植物地上磷(-3.7%)和地下磷(-6.5%)含量。植物地上碳和地上氮的效应值与湿度指数呈显著正相关。增温对陆地生态系统植物碳、氮和磷含量均表现为负效应,且这种影响受增温时间和增温强度的调节。We conducted a Meta-analysis with 264 datasets from 55 publications to investigate the effects of war-ming duration and intensity on plant carbon,nitrogen and phosphorus contents.The results showed that warming significantly reduced shoot carbon(effect value of-1.7%),root carbon(-4.0%),litter carbon(-3.7%),shoot nitrogen(-7.0%)and litter nitrogen contents(-6.4%).For different ecosystem types,warming significantly de-creased shoot carbon(-0.8%),shoot nitrogen(-5.9%),root carbon(-7.4%),litter carbon(-2.1%),and lit-ter nitrogen content(-13.4%)in grasslands,while significantly increased shoot carbon(2.7%)in scrublands and litter phosphorus content(42.4%)in forests.Short-term warming(<5 years)decreased shoot carbon(-0.4%),shoot phosphorus(-0.4%)and litter nitrogen(-13.4%)contents,while medium-to long-term warming(5-10 years)increased shoot carbon(0.6%),shoot phosphorus(20.2%)and litter nitrogen(6.2%)contents.The 0-2℃warming intensity increased shoot phosphorus(10.1%)and root phosphorus(27.4%)contents of plants,while the>2℃warming intensity decreased shoot phosphorus(-3.7%)and root phosphorus(-6.5%)content.The effect values of plant shoot carbon and shoot nitrogen were significantly and positively correlated with humidity in-dex.Warming showed negative effects on plant carbon,nitrogen and phosphorus contents in terrestrial ecosystems,and such effects were moderated by the duration and intensity of warming.

关 键 词：增温 植物养分含量 养分利用效率 生态系统功能 META分析 

分 类 号：Q948[生物学—植物学]