Root contribution to total soil metabolism in a tropical forest soil from Orissa, India

Behera, Niranjan; Joshi, Sushila; Pati, D. P.

doi:10.1016/0378-1127(90)90020-c

Cited by 90 publications

(49 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The root biomass regression was used to estimate root respiration in some studies (e.g. Beheraa et al 1990;Rodeghiero and Cescatti 2006;Wang et al 2008). High root density would result in a high contribution of root respiration to the upper slope (Table 3).…”

Section: Variation Of Carbon Dioxide Sources In Different Slope Positmentioning

confidence: 99%

Topographic variation in heterotrophic and autotrophic soil respiration in a tropical seasonal forest in Thailand

Takahashi

Hirai

Limtong³

et al. 2011

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

Soil respiration is a carbon flux that is indispensable for determining carbon balance despite variations over time and space in forest ecosystems. In Kanchanaburi, western Thailand, we measured the soil respiration rates at different slope positions-ridge (plot R), upper slope (plot U), and lower slope (plot L)-on a hill in a seasonal tropical forest [mixed deciduous forest (MDF)] to determine the seasonal and spatial variations in soil respiration on the slope. The heterotrophic (organic layer and soil) and autotrophic (root) respiration was differentiated by trenching. Soil respiration rates showed clear seasonal patterns: high and low rates in rainy and dry seasons respectively, at all plots, and tended to decrease up the slope. Soil respiration rates responded significantly to soil water content in the 0-30 cm layer, but the response patterns differed between the lower slope (plot L) and the upper slope (plots R and U): a linear model could be applied to the lower slope but exponential quadratic models to the upper slope. The annual carbon dioxide (CO 2 ) efflux from the forest floor was also associated with the slope position and ranged from 1908 gC m À2 year À1 in plot L to 1199 gC m À2 year À1 in plot R. With ascending position from plot L to R, the contribution of autotrophic respiration increased from 19.4 to 36.6% of total soil respiration, while that of the organic layer decreased from 26.2 to 9.4%. Mineral soil contributed to 46.3 to 54.4% of the total soil respiration. Soil water content was the key factor in controlling the soil respiration rate and the contribution of the respiration sources. However, the variable responses of soil respiration to soil water content create a complex distribution of soil respiration at the watershed scale.

show abstract

Section: Variation Of Carbon Dioxide Sources In Different Slope Positmentioning

confidence: 99%

Topographic variation in heterotrophic and autotrophic soil respiration in a tropical seasonal forest in Thailand

Takahashi

Hirai

Limtong³

et al. 2011

Soil Science and Plant Nutrition

View full text Add to dashboard Cite

show abstract

“…The regression approach was first suggested by Kucera and Kirkham (1971) and was applied in some later studies (Behera et al 1990, Jia et al 2006, Wang et al 2009). Kuzyakov (2006) listed several methods for separating the components of soil respiration in his review.…”

Section: Resultsmentioning

confidence: 99%

“…By comparing the methods, he concluded that the regression technique is the most suitable because of the lowest disturbance and highest universality. This approach is also rather simple and cheap, and can be used in several ecosystems, such as forests (Behera et al 1990), agricultural fields ) and grasslands (Wang et al 2009). During soil respiration measurements, multiple samples can be taken by placing several sampling collars simultaneously, thereby reducing the bias caused by soil heterogeneity.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the basic assumption of this study is valid. The other shortcoming is that increasing root biomass is strongly correlated with the quantity of large, older roots, which respire and exude much less C than fine, young roots (Behera et al 1990). However, Kuzyakov (2006) remarked that this shortcoming was actually minor compared to those of other methods (e.g.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Contribution of root respiration to soil respiration in a rape (Brassica campestris L.) field in Southwest China

Hao

Jiang

2014

Plant Soil Environ.

View full text Add to dashboard Cite

This study aimed to separate the respective contributions of root and microbial respiration to soil respiration in a rape field in Southwest China. The soil respiration was measured with a closed chamber technique and a regression method was used to apportion root and microbial respiration. Microbial and root respiration ranged from 70.67 to 183.77 mg CO 2 /m 2 /h and 21.99 to 193.09 mg CO 2 /m 2 /h, averaged 127.16 and 116.66 mg CO 2 /m 2 /h during the rape growing season, respectively. Root respiration coefficient ranged from 0.41 to 5.39 mg C-CO 2 /g C/h and was negatively correlated with root/shoot ratio, aboveground and belowground biomass, but positively correlated with root N content. The contribution of root respiration to soil respiration averaged 44.2%, ranging from 14.5% to 62.62%.

show abstract

“…These large coefficients of variance caused the largest standard error value in the Rh/Rs assessment (54 ±41 %, Table 6). The uncertainty in the regression fit was likely caused in large part by the older roots which are 265 bulkier but respire less than fine and young roots (Behera et al, 1990). However, this method had the closest average Rh/Rs to the δ 13 C natural abundance technique.…”

mentioning

confidence: 99%

Separation of soil respiration; a site-specific comparison of partition methods

Comeau¹,

Lai²,

Cui³

et al. 2018

Preprint

View full text Add to dashboard Cite

Abstract. Without accurate data on soil heterotrophic respiration (Rh), assessments of soil carbon (C) 10 sequestration rate and C balance are challenging to produce. Accordingly, it is essential to determine the contribution of the different sources of the total soil CO 2 efflux (Rs) in different ecosystems, but to date, there are still many uncertainties and unknown regarding the soil respiration partitioning procedures currently available.This study compared the suitability and accuracy of five different Rh/Rs partitioning methods in a subtropical forest: (1) regression between root mass and root derived CO 2 ; (2)

show abstract

Root contribution to total soil metabolism in a tropical forest soil from Orissa, India

Cited by 90 publications

References 14 publications

Topographic variation in heterotrophic and autotrophic soil respiration in a tropical seasonal forest in Thailand

Topographic variation in heterotrophic and autotrophic soil respiration in a tropical seasonal forest in Thailand

Contribution of root respiration to soil respiration in a rape (Brassica campestris L.) field in Southwest China

Separation of soil respiration; a site-specific comparison of partition methods

Contact Info

Product

Resources

About