Microbial biomass nitrogen pool in soils from a warm temperate grassland, and from deciduous and evergreen forests in Chiba, central Japan

Billore, S. K.; Ohsawa, Masahiko; Numata, Makoto; Okano, S.

doi:10.1007/bf00336147

Cited by 15 publications

(10 citation statements)

References 22 publications

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“…The large variation of microbial C:N ratio (6.0 -11.34) ( Table 2) in the present study areas may be due to low availability of total soil N, however, the present value is close to the range reported by Martikainen and Palojarvi (1990) for various forest soils (6)(7)(8)(9) …”

Section: Discussionsupporting

confidence: 74%

Seasonal and Temporal Variation in Soil Microbial Biomass C, N and P in Different Types Land Uses of Dry Deciduous Forest Ecosystem of Udaipur, Rajasthan, Western India

Patel¹,

Kumar²,

Kumar³

et al. 2010

Appl Ecol Env Res

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Patel et al.: Seasonal and temporal variation in soil microbial biomass C, N and P in different types land uses of dry deciduous forest -377 - Abstract. The soil microbial biomass of soil is being increasing recognized as sensitive indicator of soil quality. Its knowledge is fundamental for sustainable environment management. The soil microbial biomass C, N and P were studied in four different land uses of dry tropical forest of Udaipur, Rajasthan, Western India to assess the influence of abiotic, physico-chemical variables and difference in different land uses (mixed forest, butea plantation, grassland and agricultural lands) on the seasonal variation in soil microbial biomass. Microbial biomass C, N and P were highest during rainy season and lowest during winter in all the four different land use with the exception of microbial N which was lowest in summer in mixed forest and butea plantation. Microbial biomass C and N were shown to be significantly correlated to the abiotic and physico-chemical variables of the soil, such as soil temperature, relative humidity, soil moisture, organic C, total N, clay, and pH. Present study clearly shows that land use has a significant effect on microbial biomass C, N and P in soil by altering natural soil characteristics under the same ecological conditions.

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Section: Discussionsupporting

confidence: 74%

Seasonal and Temporal Variation in Soil Microbial Biomass C, N and P in Different Types Land Uses of Dry Deciduous Forest Ecosystem of Udaipur, Rajasthan, Western India

Patel¹,

Kumar²,

Kumar³

et al. 2010

Appl Ecol Env Res

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“…In addition, the effect of canopy cover type was mostly observed in the upper soil layer, while conditions were more homogeneous in the subsurface soil suggesting a plant cover effect on soil probably through differences in litter fall quantity and quality (Augusto et al 2002). Billore et al (1995) found a strong positive correlation between microbial and root biomasses, thus vegetation could have also controlled soil microbial processes through differences in the root systems. Nevertheless, not all the variability observed among microhabitats should be attributed the canopy cover type but to other belowground characteristics (e.g.…”

Section: Season Determines Canopy Cover Type Effect On Microbial Biomassmentioning

confidence: 95%

Microbial C, N and P in soils of Mediterranean oak forests: influence of season, canopy cover and soil depth

2010

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In Mediterranean ecosystems the effect of aboveground and belowground environmental factors on soil microbial biomass and nutrient immobilization-release cycles may be conditioned by the distinctive seasonal pattern of the Mediterraneantype climates. We studied the effects of season, canopy cover and soil depth on microbial C, N and P in soils of two Mediterranean forests using the fumigation-extraction procedure. Average microbial values recorded were 820 lg C g -1 , 115 lg N g -1 and 19 lg P g -1 , which accounted for 2.7, 4.7 and 8.8% of the total pools in the surface soil, respectively. Microbial N and P pools were about 10 times higher than the inorganic N and P fractions available for plants. Microbial C values differed between forest sites but in each site they were similar across seasons. Both microbial and inorganic N and P showed maximum values in spring and minimum values in summer, which were positively correlated with soil moisture. Significant differences in soil microbial properties among canopy cover types were observed in the surface soil but only under favourable environmental conditions (spring) and not during summer. Soil depth affected microbial contents which decreased twofold from surface to subsurface soil.Microbial nutrient ratios (C/N, C/P and N/P) varied with seasons and soil depth. Soil moisture regime, which was intimately related to seasonality, emerged as a potential key factor for microbial biomass growth in the studied forests. Our research shows that under a Mediterranean-type climate the interaction among season, vegetation type and structure and soil properties affect microbial nutrient immobilization and thus could influence the biogeochemical cycles of C, N and P in Mediterranean forest ecosystems.

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“…The site number is labeled near each plot. Values in common Japanese forest soils were cited from: Billore et al. 1995; Chihara et al.…”

Section: Resultsmentioning

confidence: 99%

“…The site number is labeled near each plot. Values in common Japanese forest soils were cited from: Billore et al 1995;Chihara et al 2000;Chowdhury et al 1999;Guan et al 1997;Furusawa et al 2005;Mabuhay et al 2006;Ohse et al 2003a,b;Ohya et al 2000;Oyanagi et al 2002a,b;Sato et al 2000;Sato and Seto 1995;Tamai et al 2003;Tokuchi et al 2000;Tripathi et al 2005Tripathi et al , 2006 Relationships between MBC and MBN and between TC and TN were also compared between the Osorezan acid soils and the common forest soils. In the latter, MBC was highly correlated with MBN (r = 0.934, P < 0.01, n = 27) as shown in Fig.…”

Section: Microbial Biomass C N and Smentioning

confidence: 99%

Microbial biomass and nitrogen transformations in surface soils strongly acidified by volcanic hydrogen sulfide deposition in Osorezan, Japan

Watanabe

Yamamura

Takamatsu

et al. 2010

Soil Science and Plant Nutrition

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Volcanic acidification has created unique ecosystems that have had to adapt to the acidic environments in volcanic regions. To characterize the primary microbial properties of strongly acidified soils in such environments, we investigated microbial biomass, nitrogen transformations and other relevant chemical properties in the surface soils of solfatara and forests from Osorezan, a typical volcanic region in Japan, and compared the results to common Japanese forest soils. Soil microbial biomass C (MBC) and N (MBN) were determined using the chloroform fumigation–extraction method. Potential net N mineralization and net nitrification were measured in aerobic laboratory incubations. Long‐term acidification in the Osorezan soils by volcanic hydrogen sulfide deposition caused low soil pH (3.0–3.8), base cation deficiency and increased concentrations of toxic ions such as Al3+. The proportions of MBC to total carbon (MBC/TC ratio) and MBN to total nitrogen (MBN/TN ratio) were lower than those in common Japanese forest soils. The extreme acidic conditions may have inhibited microbial survival in the Osorezan acid soils. Net N mineralization occurred at rates comparable to those in common Cryptomeria japonica forest soils, probably because of the presence of acid‐tolerant soil microorganisms. Net nitrification was completely inhibited and autotrophic ammonia oxidizers were not detected by the MPN method. The inhibition of nitrification prevents nitrogen leaching from the soils, thus maintaining a nitrogen cycle in the volcanic acid region in which (and NH3) is recycled among microorganisms and plants.

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Microbial biomass nitrogen pool in soils from a warm temperate grassland, and from deciduous and evergreen forests in Chiba, central Japan

Cited by 15 publications

References 22 publications

Seasonal and Temporal Variation in Soil Microbial Biomass C, N and P in Different Types Land Uses of Dry Deciduous Forest Ecosystem of Udaipur, Rajasthan, Western India

Seasonal and Temporal Variation in Soil Microbial Biomass C, N and P in Different Types Land Uses of Dry Deciduous Forest Ecosystem of Udaipur, Rajasthan, Western India

Microbial C, N and P in soils of Mediterranean oak forests: influence of season, canopy cover and soil depth

Microbial biomass and nitrogen transformations in surface soils strongly acidified by volcanic hydrogen sulfide deposition in Osorezan, Japan

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