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

Xiaohan DONG ¹Yunting FANG ²Dongwei LIU ³Xin GUAN ⁴Kai HUANG ⁵Yuqi LIU ⁵Qingkui WANG ⁴Silong WANG ⁴Weidong ZHANG⁴

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作者信息

1. 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)
2. 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)
3. 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)
4. Huitong Experimental Station of Forest Ecology,CAS Key Laboratory of Forest Ecology and Management,Institute of Applied Ecology,Shenyang 110016(China);Hunan Key Laboratory for Structure and Ecosystem Service of Subtropical Forest,Huitong National Research Station of Forest Ecosystem,Huitong 418307(China)
5. University of Chinese Academy of Sciences,Beijing 101408(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)
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Abstract

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.

Key words

13C-glucose/labelling technique/global warming/priming effect/phospholipid fatty acids/soil organic matter mineralisation/soil enzyme/soil respiration

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基金项目

National Natural science Foundation of China(U22A20612)

National Natural science Foundation of China(41877092)

National Key R&D Program of China(2022YFF-1303003)

National Key R&D Program of China(2016YFA0600802)

K.C.Wong Education Foundation,China(GJTD-2018-07)

Research and Development Project of Scientific Instruments and Equipment of Chinese Academy of Sciences(YJKYYQ20190054)

Liaoning Vitalization Talents Program,China(XLYC1902016)

出版年

2024

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

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