Eucalyptus globulus harvest residue management effects on soil carbon and microbial biomass at 1 and 5 years after plantation establishment

Mendham, Daniel; Sankaran, K. V.; O’Connell, A. M.; Grove, T. S.

doi:10.1016/s0038-0717(02)00205-5

Cited by 100 publications

(52 citation statements)

References 34 publications

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“…There is increasing evidence that microbial properties could be used as potential indicators of impacts of forest management practices on soil (Mendham et al, 2002;Li et al, 2004). In fact, several authors consider that the ratio of the soil microbial biomass carbon to soil organic carbon, soil microbial biomass nitrogen, the metabolic quotient and soil enzyme activities are reliable indicators of changes in soil management compared to total organic C and N, which are unresponsive over short periods (Powlson et al, 1987;Mendham et al, 2002;Li et al, 2004;Caldwell, 2005).…”

Section: Introductionmentioning

confidence: 99%

Microbial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing species

et al. 2011

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Mixed stands with nitrogen fixing secondary species can improve the vigour and the stand environment of the targeted species. The aim of this study was to better understand the effect of the consociation of a N-fixing species (black locust) with a broadleaf quality timber production (wild cherry). The study was conducted in 11 year old plantations located in the Northeast of Portugal. The treatments considered were: pure black locust, pure wild cherry and mixture of wild cherry and black locust. Each plot had six lines with 12 trees and a buffer strip line. The samplings were collected on the plantation line within a radius of 50 to 100 cm from the tree. In each plot we measured soil N mineralization dynamic, soil microbial biomass carbon (MBC) and nitrogen (MBN), microbial quotient (MBC/Corg), metabolic quotient (qCO 2 ), microbial respiration and dehydrogenase activity. Results showed a positive impact of the black locust species on the supply of nitrogen to the soil. The net N-mineralization rates were, at the end of this study, about three times greater in the pure black locust than in the pure wild cherry and about two times greater in the mixture than in the pure wild cherry. MBC and cumulative soil respiration were higher in the mixture than in the pure cherry plantation soil which may reflect positive changes in the soil environment.Key words: Prunus avium; Robinia pseudoacacia; accessory trees; soil respiration; dehydrogenase activity; metabolic quotient. ResumenLa biomasa microbiana y la mineralización de N en plantaciones mixtas de frondosas y especies fijadoras de nitrógeno Bosques mixtos con especies secundarias fijadoras de nitrógeno puede mejorar el vigor y el ambiente del rodal de las especies objetivo. El objetivo de este estudio era comprender mejor el efecto de la asociación de especies fijadoras de nitrógeno (algarrobo negro) con especies frondosas productoras de madera de calidad (cerezo silvestre). El estudio se realizó en plantaciones con una edad de 11 años situados en el nordeste de Portugal. El muestreo fue realizado en tres tipos de plantaciones: algarrobo negro, cerezo silvestre puro y una plantación mixta de ambas especies. Cada parcela tenía seis líneas con 12 árboles y una línea de borde. Los muestreos se recolectaron en la línea de plantación dentro de un radio de 50 a 100 cm del árbol. En cada parcela se midió la mineralización de nitrógeno en el suelo, el carbono en la biomasa microbiana (MBC), el nitrógeno (MBN), el cociente microbiano (MBC/Corg), el cociente metabólico (qCO 2 ) y la respiración microbiana. Los resultados mostraron un impacto positivo del algarrobo negro en el suministro de nitrógeno al suelo. Las tasas netas de mineralización de N fueron, al f inal del estudio, aproximadamente tres veces superiores en el algarrobo que en el cerezo y dos veces superiores en la plantación mixta que en cerezo. MBC y la respiración del suelo acumulada fue más elevada en las plantaciones mixtas que en el suelo de las plantaciones de cerezo puro que puede reflejar cambios po...

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Section: Introductionmentioning

confidence: 99%

Microbial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing species

et al. 2011

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“…Differences in soil bulk density between different LULC types affect comparisons of SOC and total nitrogen stocks by influencing the amount of soils that are sampled from a fixed soil depth (Mendham et al, 2002;Solomon et al, 2002). The changes in soil organic carbon as result of converting natural forests to agricultural land uses could be inflated by the differences in bulk density (Murty et al, 2002).…”

Section: Determination Of Soil Organic Carbon and Nitrogen Stocksmentioning

confidence: 99%

Soil Organic Carbon and Nitrogen Stocks Following Land Use Changes in a Sub-Humid Climate

Biazin¹,

Kim²,

Mengistu³

2018

ENRR

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There has been an incessant conversion of natural forests to agricultural land uses such as farmlands, grasslands and parkland agro-forestry in Africa during the last century. This study investigated changes in soil organic carbon (SOC) and total nitrogen (TN) stocks following the conversion of a natural forest to coffee-based agro-forestry, grazing grassland and well-managed maize farm in a sub-humid tropical climate of Ethiopia. Soil samples (up to 1m depth) were taken from each of these four land use types. Taking the natural forest as a baseline and with duration of 35 years since land use conversion, the total SOC and TN stocks were not significantly different (P > 0.05) among the different land use types when the entire 1m soil depth was considered. However, in the upper 0-10cm soil depth, the SOC and TN stocks were significantly higher (P < 0.05) in the natural forest than the agricultural land use types. There were different patterns of SOC and TN distributions along the soil depths for the different land use types. The SOC stocks decreased with depth in natural forest, but did not show any increasing or decreasing trends in maize farm, grazing grassland, and coffee-based agroforestry. The results of this study revealed that the negative effects of converting natural forests to agricultural land use types on SOC and TN can be prevented through appropriate land management practices in cultivated and grazing lands and use of proper agroforestry practices in a sub-humid tropical climate.

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“…Soil microbial biomass can also react quickly to the changes occurring in nutrient cycling, humidity, temperature, organic matter levels and soil cation availability (Peacock et al, 2001). Insam et al (1991) studied that soil Microbial Biomass Carbon (MBC) and Nitrogen (MBN) are the recycling and store pools of soil C and N. Viable soil microbial biomass is integral for aggregate formation, both a source and sink of available nutrients for plants and regulating ecosystems process such as decomposition, energy flow and trace gas fluxes in soil (Peacock et al, 2001;Haubensak et al, 2002;Mendham et al, 2002).…”

Section: Ajesmentioning

confidence: 99%

Status of Soil Microbial Population, Enzymatic Activity and Biomass of Selected Natural, Secondary and Rehabilitated Forests

Singh

Abdu

Othman

et al. 2013

American Journal of Environmental Sciences

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Substantial clearance of forests and conversion of forest into various land use types contribute to deterioration of soil fertility and associated nutrients loss. Soils from natural and rehabilitated forest in Chikus Forest Reserve and also enrichment planting forest and secondary forest of Tapah Hill Forest Reserve, Perak, Malaysia were selected in order to assess the influence of land use change on biological properties. This study was carried out to provide fundamental information on soil biological properties and also to compare the differences between natural forest, mono-rehabilitated forest, mixed planting forest and natural regenerated forest (secondary forest). Six subplots (20×20 m) were established at each study plot and soil samples were collected at the depths of 0-15 cm (topsoil) and 15-30 cm (subsoil). Soil microbial population was determined using spread-plate technique. Fluorescein Diacetate (FDA) hydrolysis was used to assess the amount of microbial enzymatic activity for each forest plot. Soil Microbial Biomass C (MBC) and N (MBN) were extracted using chloroform fumigation extraction technique and the amount of MBC was determined by dichromate digestion, while MBN via Kjeldahl digestion technique. Soil acidity was determined by pH meter and moisture content was elucidated using gravimetric method. The levels of microbial population of bacterial and fungal at natural significantly exceeded the corresponding values of rehabilitated and secondary forest. However, microbial population is much higher in rehabilitated forest of Tapah Hill compared to that of secondary forest and also Chikus Forest Reserve planted forest which proves that rehabilitation activities do help increase the level of microbial community in the soils. Longer period of time after planting as in enrichment planting compared to mono planting of S. leprosula plantation showed that restoring and recovery of the planted forest needed time. Deforestation activities decrease soil biological activities; however, proper forest management and rehabilitation activities are able to restore the condition of degraded forest land to its original state.

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Eucalyptus globulus harvest residue management effects on soil carbon and microbial biomass at 1 and 5 years after plantation establishment

Cited by 100 publications

References 34 publications

Microbial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing species

Microbial biomass and N mineralization in mixed plantations of broadleaves and nitrogen-fixing species

Soil Organic Carbon and Nitrogen Stocks Following Land Use Changes in a Sub-Humid Climate

Status of Soil Microbial Population, Enzymatic Activity and Biomass of Selected Natural, Secondary and Rehabilitated Forests

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