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Productivity and Seasonality Drive Total Soil Respiration in Semi-Arid Juniper Woodlands (Juniperus thurifera L., Southern Spain)

Garcia Morote, Francisco Antonio and Andres Abellan, Manuela and Rubio, Eva and Martínez García, Eduardo and Garcia Saucedo, Francisco and Picazo Cordoba, Marta Isabel and Lopez Serrano, Francisco Ramon (2022). Productivity and Seasonality Drive Total Soil Respiration in Semi-Arid Juniper Woodlands (Juniperus thurifera L., Southern Spain). Forests. 13 :4 , 538
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Abstract

We analyzed the relationship between forest productivity (joint effect of forest maturity and soil quality) and total soil respiration (mu mol CO2 m(-2) s(-1)) in semi-arid juniper woodlands (young woodlands growing in abandoned farmlands with deeper soils, and mature woodlands in lithic soils), and investigated the seasonal variation in soil CO2 efflux as a function of soil temperature and the soil water content. We measured the soil CO2 efflux from twelve cylinders in the soil over a three-year period using LI-6400 equipment. The results show that, in the more productive site (young woodland), soil CO2 efflux was higher due to greater respiration, mainly in the driest periods. Soil respiration followed a seasonal trend, being higher in spring and decreasing in cold periods. In both juniper woodlands and especially in the older forest, the CO2 efflux rates were low (<2.5 for Q(10)), typical of slow-growing species. Soil respiration was controlled by soil temperature without drought and in the temperate-warm season, whereas respiration showed sensitivity to soil water content in periods when edaphic humidity was low (but only in the more productive, young forest, which seemed to show better adaptation to drought), and under high soil moisture (soil water > 25%) for both woodlands, coinciding with warm temperatures in the spring. This period also corresponded to the highest CO2 efflux recorded in both woodlands. The accumulation of organic C seems to also be important to maintain elevated soil respiration in summer, especially in young woodlands. Thus, apart from microclimatic conditions, factors related to productivity regulate respiratory activity.

Authors/Creators:Garcia Morote, Francisco Antonio and Andres Abellan, Manuela and Rubio, Eva and Martínez García, Eduardo and Garcia Saucedo, Francisco and Picazo Cordoba, Marta Isabel and Lopez Serrano, Francisco Ramon
Title:Productivity and Seasonality Drive Total Soil Respiration in Semi-Arid Juniper Woodlands (Juniperus thurifera L., Southern Spain)
Series Name/Journal:Forests
Year of publishing :2022
Volume:13
Number:4
Article number:538
Number of Pages:18
Publisher:MDPI
ISSN:1999-4907
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:soil CO2 efflux, Spanish juniper, temperature coefficient, Q(10), slow-growing species, soil moisture, soil organic C, semi-arid climate
URN:NBN:urn:nbn:se:slu:epsilon-p-117012
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117012
Additional ID:
Type of IDID
DOI10.3390/f13040538
Web of Science (WoS)000786913000001
ID Code:27814
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:13 May 2022 13:25
Metadata Last Modified:13 May 2022 13:31

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