In-situ warming does not change soil priming effect induced by glucose addition in a temperate forest

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外文摘要：Priming effect(PE)on soil organic carbon(SOC)decomposition caused by the addition of organic carbon(C)is an important ecological process in regulating soil C cycle.Additionally,most priming studies are confined to laboratory trials,while the assessment of soil PE under field conditions with variable weather conditions is scarce.This study assessed the direct effects of glucose addition and in-situ warming on the extent of PE under field conditions in a temperate forest.We evaluated soil PE using 13C-glucose labelling,a simple and novel technique,based on the Keeling plot method.Glucose addition significantly enhanced native SOC decomposition and induced strong PE.However,the effect of in-situ warming on the extent of PE was not significant.This study confirms the importance of PE in regulating SOC turnover under field conditions.

外文关键词：

13C-glucoselabelling techniqueglobal warmingpriming effectphospholipid fatty acidssoil organic matter mineralisationsoil enzymesoil respiration

作者：

Xiaohan DONG、Yunting FANG、Dongwei LIU、Xin GUAN、Kai HUANG、Yuqi LIU、Qingkui WANG、Silong WANG、Weidong ZHANG

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作者单位：

Huitong Experimental Station of Forest Ecology,CAS Key Laboratory of Forest Ecology and Management,Institute of Applied Ecology,Shenyang 110016(China)

University of Chinese Academy of Sciences,Beijing 101408(China)

Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical Forest,Huitong National Research Station of Forest Ecosystem,Huitong 418307(China)

Qingyuan Forest Chinese Ecosystem Research Network(CERN),National Observation and Research Station,Shenyang 110016(China)

Key Laboratory of Forest Ecology and Management,Institute of Applied Ecology,Chinese Academy of Sciences,Shenyang 110016(China)

Key Laboratory of Stable Isotope Techniques and Applications,Shenyang 110016(China)

Key Laboratory of Terrestrial Ecosystem Carbon Neutrality,Shenyang 110016(China)

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基金：

National Natural science Foundation of ChinaNational Natural science Foundation of ChinaNational Key R&D Program of ChinaNational Key R&D Program of ChinaK.C.Wong Education Foundation,ChinaResearch and Development Project of Scientific Instruments and Equipment of Chinese Academy of SciencesLiaoning Vitalization Talents Program,China

项目编号：

U22A20612418770922022YFF-13030032016YFA0600802GJTD-2018-07YJKYYQ20190054XLYC1902016

出版年：

2024

DOI：

10.1016/j.pedsph.2023.06.003

土壤圈(英文版)

中国土壤学会,中科院南京土壤研究所和土壤与农业可持续发展国家重点实验室

土壤圈(英文版)

CSTPCD

影响因子：0.477

ISSN：1002-0160

年,卷(期)：2024.34(4)