Contributions of aboveground litter, belowground litter, and root respiration to total soil respiration in a temperate mixed hardwood forest

1993 ◽  
Vol 23 (7) ◽  
pp. 1402-1407 ◽  
Author(s):  
Richard D. Bowden ◽  
Knute J. Nadelhoffer ◽  
Richard D. Boone ◽  
Jerry M. Melillo ◽  
Jason B. Garrison
Keyword(s):  
Carbon Dioxide ◽  
Soil Respiration ◽  
Root Respiration ◽  
Root Activity ◽  
Hardwood Forest ◽  
Total Soil ◽  
Root Litter ◽  
Wide Range ◽  
Total Soil Respiration ◽  
Aboveground Litter

Estimating contributions by root respiration and root litter to total soil respiration is difficult owing to problems in measuring each component separately. In a mixed hardwood forest in Massachusetts, we added or removed aboveground litter and terminated live root activity through construction of trenches and root barriers to determine the contribution of aboveground litter, belowground litter, and root respiration to total soil respiration. Annual soil respiration at control plots, measured by the soda-lime technique, was 371 g C•m−2-year−1. We used aboveground litter inputs (138 g C•m−2year−1) and differences in carbon dioxide effluxes among treatment plots to calculate contributions to total soil respiration by live root respiration (33%) and by organic matter derived from aboveground (37%) and belowground (30%) litter. Newly deposited aboveground litter contributed 31% of the carbon dioxide emitted by total aboveground litter. This estimate is consistent with values published in litter decomposition studies. Nearly two thirds of soil respiration in this forest can be attributed to root activity, comparable with a previous study suggesting that live root respiration plus decomposition of root litter contributes 70–80% of total soil respiration across a wide range of forests.

scholarly journals Contribution of root respiration to total soil respiration during non-growing season in mine reclaimed soil with different covering soil thicknesses

2020 ◽  
Author(s):  
Min Chen ◽  
Xiaoyang Chen ◽  
Zhiyong Hu ◽  
Tingyu Fan ◽  
Shiwen Zhang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Root Respiration ◽  
Growing Season ◽  
Growth Season ◽  
Soil Thickness ◽  
Total Soil ◽  
Reclaimed Soil ◽  
Total Soil Respiration ◽  
Monthly Variations

Abstract An accurate assessment of root respiration in mine reclaimed soil is important for effectively evaluating mining area ecosystem. This study investigated dynamic changes in root respiration and contribution of root respiration to total soil respiration (Rr/Rt ratio) during the non-growth season in mine reclaimed soil with different covering soil thicknesses. According to covering soil thicknesses, the study area was divided into four sites: 10-25 cm (site A), 25-45 cm (site B), 45-55 cm (site C) and 55-65 cm (site D). From November 2017 to April 2018 (except February in 2018), the soil respiration, root respiration, temperature at 5 cm, water content and root biomass were measured. The results showed that soil temperature and root respiration exhibited similar diurnal and monthly variations. The root respiration was strongly influenced by soil temperature during the non-growing season, which showed an exponential and positive relationship with soil temperature (P<0.001). The root respiration varied with the covering soil thickness and was the greatest with the covering soil thickness at 25–45 cm. The Rr/Rt ratio also exhibited monthly variations. During the non-growth season, the mean value of the Rr/Rt ratio were 51.15% in mine reclaimed soil. The study indicated that root respiration was the primary source of soil respiration and important to estimate the potential of emission of soil CO 2 at regional scale in mine reclaimed soil.

scholarly journals Contribution of root respiration to total soil respiration during non-growing season in mine reclaimed soil with different covering soil thicknesses

2020 ◽  
Author(s):  
Min Chen ◽  
Xiaoyang Chen ◽  
Zhiyong Hu ◽  
Tingyu Fan ◽  
Shiwen Zhang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Root Respiration ◽  
Regional Scale ◽  
Growing Season ◽  
Soil Thickness ◽  
Total Soil ◽  
Reclaimed Soil ◽  
Total Soil Respiration ◽  
Monthly Variations

Abstract An accurate assessment of root respiration in mine reclaimed soil is important for effectively evaluating mining area ecosystem. This study investigated dynamic changes in root respiration and contribution of root respiration to total soil respiration (Rr/Rt ratio) during the non-growing season in mine reclaimed soil with different covering soil thicknesses. According to covering soil thicknesses, the study area was divided into four sites: 10-25 cm (site A), 25-45 cm (site B), 45-55 cm (site C) and 55-65 cm (site D). From November 2017 to April 2018 (except February in 2018), the soil respiration, root respiration, temperature at 5 cm, water content and root biomass were measured. The results showed that soil temperature and root respiration exhibited similar diurnal and monthly variations. The root respiration was strongly influenced by soil temperature during the non-growing season, which showed an exponential and positive relationship with soil temperature (P<0.001). The root respiration varied with the covering soil thickness and was the greatest with the covering soil thickness at 25–45 cm. The Rr/Rt ratio also exhibited monthly variations. During the non-growing season, the mean value of the Rr/Rt ratio was 51.15% in mine reclaimed soil. The study indicated that root respiration was the primary source of soil respiration and important to estimate the potential emission of soil CO2 at regional scale in mine reclaimed soil.

Partitioning of total soil respiration into root, rhizosphere and basal-soil CO2 fluxes in contrasting rice production systems

Soil Research ◽  
2020 ◽  
Vol 58 (6) ◽  
pp. 592
Author(s):  
S. Neogi ◽  
P. K. Dash ◽  
P. Bhattacharyya ◽  
S. R. Padhy ◽  
K. S. Roy ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Dehydrogenase Activity ◽  
Root Respiration ◽  
Production Systems ◽  
Rice Production ◽  
Carbon Pools ◽  
Labile Carbon ◽  
Basal Soil Respiration ◽  
Total Soil ◽  
Total Soil Respiration

Soil respiration contributes significantly to ecosystem respiration and is vital in the context of climate change research. In a season-long experiment we studied total soil respiration (TSR) and its partitioning into root respiration, rhizospheric respiration (RhR) and basal-soil respiration in four contrasting rice production systems: irrigated lowland (IL) (cv. Gayatri); organic nutrient managed irrigated lowland (OIL) (cv. Geetanjali); system of rice intensification (SRI) (cv. Swarna); and aerobic rice system (Aerobic) (cv. APO). We considered TSR to be the sum of root respiration, RhR and basal-soil respiration. Irrespective of the rice production system, TSR was higher at panicle initiation stage. Considering all four systems, the RhR contributed the most (59–83%) and basal-soil respiration the least (10–19%) to the TSR. Mean RhR showed the trend of Aerobic &gt; SRI &gt; IL &gt; OIL across the growing seasons and indicated higher rhizosphere activities in the aerobic system. Mean root respiration showed a trend of IL &gt; OIL &gt; SRI &gt; Aerobic and mean basal-soil respiration had SRI &gt; IL &gt; OIL &gt; Aerobic. Soil labile carbon pools and heterotrophic populations were higher in OIL and dehydrogenase activity was higher in SRI. Microbial biomass carbon, readily mineralisable carbon, dehydrogenase activity and the heterotroph population showed positive correlations with RhR. Hence, regulation of RhR is crucial and can be achieved through rhizosphere modifications linked with labile carbon pools and soil enzymatic activities by plant physiological modification or through soil carbon stabilisation.

Field measurements of root respiration and total soil respiration in an alder forest

2001 ◽  
Vol 150 (1) ◽  
pp. 157-168 ◽  
Author(s):  
Werner L. Kutsch ◽  
Arne Staack ◽  
Jörg Wötzel ◽  
Ulrike Middelhoff ◽  
Ludger Kappen
Keyword(s):  
Soil Respiration ◽  
Root Respiration ◽  
Field Measurements ◽  
Alder Forest ◽  
Total Soil ◽  
Total Soil Respiration

Contribution of Root Respiration to Total Soil Respiration in a Cotton Field of Northwest China

Pedosphere ◽  
2013 ◽  
Vol 23 (2) ◽  
pp. 223-228 ◽  
Author(s):  
Zhi-Min ZHAO ◽  
Cheng-Yi ZHAO ◽  
Y. YILIHAMU ◽  
Ju-Yan LI ◽  
Jim LI
Keyword(s):  
Soil Respiration ◽  
Root Respiration ◽  
Northwest China ◽  
Cotton Field ◽  
Total Soil ◽  
Total Soil Respiration

scholarly journals Contribution of root respiration to total soil respiration during non-growing season in mine reclaimed soil with different covering-soil thicknesses

2021 ◽  
Author(s):  
Min Chen ◽  
Xiaoyang Chen ◽  
Zhiyong Hu ◽  
Tingyu Fan ◽  
Shiwen Zhang ◽  
...  
Keyword(s):  
Soil Respiration ◽  
Soil Temperature ◽  
Root Respiration ◽  
Regional Scale ◽  
Growing Season ◽  
Soil Thickness ◽  
Total Soil ◽  
Reclaimed Soil ◽  
Total Soil Respiration ◽  
Monthly Variations

AbstractAn accurate assessment of root respiration in mine reclaimed soil is important for effectively evaluating mining area ecosystems. This study investigated dynamic changes in root respiration and the contribution of root respiration to total soil respiration (Rr/Rt ratio) during the non-growing season in mine reclaimed soil, with different covering-soil thicknesses. According to the covering-soil thicknesses, the study area was divided into four sites: 10–25 cm (site A), 25–45 cm (site B), 45–55 cm (site C), and 55–65 cm (site D). From November 2017 to April 2018 (except February in 2018), the soil respiration, root respiration, temperature at 5 cm, water content, and root biomass were measured. The results show that soil temperature and root respiration exhibited similar diurnal and monthly variations. The root respiration is strongly influenced by soil temperature during the non-growing season, with an exponential and positive relationship (P < 0.001). Root respiration varies with the covering-soil thickness and is greatest with a covering-soil thickness of 25–45 cm. The Rr/Rt ratio also exhibits monthly variations. During the non-growing season, the mean value of the Rr/Rt ratio is 51.15% in mine reclaimed soil. The study indicates that root respiration is the primary source of soil respiration and is an important factor for estimating the potential emission of soil CO2 from mine reclaimed soil at the regional scale.

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