Soil carbon, nitrogen and microbiological characteristics during bamboo high-speed growth

Xueqin, 王雪芹 Wang; Qichun, 张奇春 Zhang; Huaiying, 姚槐应 Yao

doi:10.5846/stxb201101110047

Cited by 2 publications

(1 citation statement)

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“…The following PLFA-marks were used: (a) Gram-positive bacteria: a15:0, i15:0, i16:0, a17:0 and i17:0 [36]; (b) Gram-negative bacteria: 16:1ω7c, 16:1 2OH, cy17:0 [36,37], i17:1ω5c, 17:1ω8c [38], i17:0 3OH [39], 18:1ω5c [40], 18:1ω7c [41] and 11Me18:1ω7c [42]; 16:1ω11c was used as Nitrospira moscoviensis PLFA-mark [43,44], but can be used as an indicator for Gram-negative bacteria [45]; (c) non-specific bacteria: 15:0, 16:0 and 18:0; (d) 17:0 as general bacterial PLFAs [38]; (e) the fungi: 18:2ω6, 9c/18:0 ante [46,47] and 18:1ω9c [48,49]; (f) arbuscular mycorrhizal fungi (AMF): 16:1ω5c [50]; (g) actinomycetes was identified by 10Me16:0 [41], 10Me17:0 [49,51] and 10Me18:0 [48,49,51]. The sum of (a), (b), (c), and (d) represented total bacteria PLFA.…”

Section: Analysis Of Microbial Biomass and Structurementioning

confidence: 99%

Soil Microbial Community Structure and Physicochemical Properties in Amomum tsaoko-based Agroforestry Systems in the Gaoligong Mountains, Southwest China

Liu

Cai

et al. 2019

Sustainability

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Amomum tsaoko is cultivated in forests of tropical and subtropical regions of China, and the planting area is expanding gradually. However, little attention has been paid to the impact of A. tsaoko cultivation on the soil characteristics of the regions. We analyzed the effects of the A. tsaoko-forest agroforestry system (AFs) on the composition of soil microbial communities with increasing stand ages. We also compared the soil physicochemical properties, microbial biomass, and phospholipid fatty acid (PLFA) composition between native forest (NF) and AFs. The results showed that the level of total carbon, nitrogen, and organic matter dramatically dropped in AFs with increasing stand ages. pH affected other soil properties and showed close correlation to total carbon (P = 0.0057), total nitrogen (P = 0.0146), organic matter (P = 0.0075), hydrolyzable nitrogen (P = 0.0085), available phosphorus (P < 0.0001), and available potassium (P = 0.0031). PLFAs of bacteria (F = 4.650, P = 0.037), gram-positive bacteria (F = 6.640, P = 0.015), anaerobe (F = 5.672, P = 0.022), and total PLFA (F = 4.349, P = 0.043) were significantly affected by different treatments, with the greatest value for NF treatment, and least value for AF5. However, the microbial biomass declined during the initial 5 years of cultivation, but it reached the previous level after more than 10 years of cultivation. Our research suggests that AFs is a profitable land-use practice in the Gaoligong Mountains and that AFs showed a recovering trend of the soil nutrient condition with increasing stand ages. However, the severe loss of nitrogen in the soil of AFs requires additional nitrogen during cultivation to restore it to pre-cultivation levels.

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Section: Analysis Of Microbial Biomass and Structurementioning

confidence: 99%

Soil Microbial Community Structure and Physicochemical Properties in Amomum tsaoko-based Agroforestry Systems in the Gaoligong Mountains, Southwest China

Liu

Cai

et al. 2019

Sustainability

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Effects of moso bamboo encroachment into native, broad-leaved forests on soil carbon and nitrogen pools

Bai

Conant

Zhou

et al. 2016

Sci Rep

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Across southern China, Moso bamboo has been encroaching on most neighboring secondary broad-leaved forests and/or coniferous plantations, leading to the land cover changes that alter abiotic and biotic conditions. Little is known about how this conversion alters soil carbon (C) and nitrogen (N). We selected three sites, each with three plots arrayed along the bamboo encroachment pathway: moso bamboo forest (BF); transition zone, mixed forest plots (MF); and broad-leaved forest (BLF), and examined how bamboo encroachment affects soil organic C (SOC), soil total N, microbial biomass C (MBC), microbial biomass N (MBN), water-soluble organic C (WSOC), and water-soluble organic N (WSON) in three forests. Over nine years, moso bamboo encroachment leads to a decrease in SOC and total soil N, an increase in MBC and WSOC, and a decrease in MBN and WSON. Changes in soil C and N occurred mainly in the topsoil. We conclude that moso bamboo encroachment on broadleaved forest not only substantially altered soil C and N pools, but also changed the distribution pattern of C and N in the studied forest soils. Continued bamboo encroachment into evergreen broadleaved forests seems likely to lead to net CO2 emissions to the atmosphere as ecosystem C stocks decline.

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Soil carbon, nitrogen and microbiological characteristics during bamboo high-speed growth

Cited by 2 publications

References 0 publications

Soil Microbial Community Structure and Physicochemical Properties in Amomum tsaoko-based Agroforestry Systems in the Gaoligong Mountains, Southwest China

Soil Microbial Community Structure and Physicochemical Properties in Amomum tsaoko-based Agroforestry Systems in the Gaoligong Mountains, Southwest China

Effects of moso bamboo encroachment into native, broad-leaved forests on soil carbon and nitrogen pools

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