scholarly journals Carbon and phosphorus biogeochemical cycles in native forest and horticultural areas in the Metropolitan Region of Curitiba, Brazil

2021 ◽  
Vol 17 (3) ◽  
pp. 01-11
Author(s):  
Tatiana Suzin Lazeris ◽  
Jéssica Pereira de Souza ◽  
Fabiane Machado Vezzan ◽  
Caroline Lima de Matos ◽  
Glaciela Kaschuk
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Organic Phosphorus ◽  
Biogeochemical Cycles ◽  
Metropolitan Region ◽  
Available Phosphorus ◽  
Native Forest ◽  
Phosphate Solubilizing Bacteria ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial

This study was carried out to understand the dynamics of carbon and phosphorus biogeochemical cycles in native forest and horticultural areas. Soilsamples were collected from native forest and horticultural areas, in four municipalities in the Metropolitan Region of Curitiba, Brazil, and evaluated for: carbon, nitrogen and phosphorus of soil microbial biomass (MBC, MBN and MBP, respectively), total organic carbon (TOC), total nitrogen (TN), total phosphorus (TP), inorganic phosphorus (iP), organic phosphorus (oP) and available phosphorus (aP. Soil suspensions diluted at 10-4were spread on plates and phosphate solubilizing bacteria (PSB) were counted. The analyses showed that horticultural areas soils accumulated 43% more TP whereas they lost 23% of TOC and 19% of TN comparing to native areas. 69% of TP in the native areas was organic (oP) whereas 59% of TP in the horticultural areas was inorganic (iP). Horticultural areas had lower numbers of colony forming unities of PSB than native areas. PSB was positively correlated with the ratio of MBC to TOC (qMic), which in turn, was negatively correlated with TOC and TN. Changes in the soil P fractions suggested a shift inthe soil community bacterial structure and in the values of soil microbial biomass of the two different soil ecosystems. The excessive P addition may stimulate soil microbial attack to soil organic matter reserves, whichmay have consequences for maintenance of soil quality and agriculture sustainability

Spatial heterogeneity of soil microbial biomass carbon, nitrogen, and phosphorus in sloping field in a groge Karst region, Southwest China

2014 ◽  
Vol 34 (12) ◽  
Author(s):  
范夫静 FAN Fujing ◽  
黄国勤 HUANG Guoqin ◽  
宋同清 SONG Tongqing ◽  
曾馥平 ZENG Fuping ◽  
彭晚霞 PENG Wanxia ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Spatial Heterogeneity ◽  
Soil Microbial Biomass ◽  
Southwest China ◽  
Microbial Biomass Carbon ◽  
Karst Region ◽  
Biomass Carbon ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial ◽  
Sloping Field

Spatial heterogeneity of soil microbial biomass carbon, nitrogen, and phosphorus in sloping farmland in a karst region on the Yunnan-Guizhou Plateau

2012 ◽  
Vol 32 (7) ◽  
pp. 2056-2065
Author(s):  
张利青 ZHANG Liqing ◽  
彭晚霞 PENG Wanxia ◽  
宋同清 SONG Tongqing ◽  
邹冬生 ZOU Dongsheng ◽  
曾馥平 ZENG Fuping ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Spatial Heterogeneity ◽  
Soil Microbial Biomass ◽  
Microbial Biomass Carbon ◽  
Karst Region ◽  
Biomass Carbon ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial ◽  
Sloping Farmland ◽  
Guizhou Plateau

CHANGES WITH TIME IN SOIL BIOMASS C, N AND P OF MINE SPOILS IN A DRY TROPICAL ENVIRONMENT

1989 ◽  
Vol 69 (4) ◽  
pp. 849-855 ◽  
Author(s):  
S. C. SRIVASTAVA ◽  
A. K. JHA ◽  
J. S. SINGH
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Native Forest ◽  
Soil N ◽  
Mine Spoils ◽  
Soil Microbial ◽  
Total Soil ◽  
Soil Biomass ◽  
Biomass N ◽  
Total Soil N

Soil biomass C, N and P were determined for a native forest site, an unmined deforested site and an age-series of adjacent coal mine spoils (5, 10, 12, 16 and 20 yr). Biomass C ranged from 209 to 867 μg g−1 soil, biomass N from 20 to 75 μg g−1 soil and biomass P from 7 to 29 μg g−1 soil. Biomass C, N and P were linearly related to each other. Biomass C was also related to the root biomass. Biomass N with a mean C:N ratio of 11.8 accounted for 2.2–4.2% of the total soil N and was positively related to the mineral N of soil. Biomass C:P ratio ranged from 27.6 to 31.0%. The biomass P was significantly related to the bicarbonate soluble soil Pi. Soil microbial biomass was characterized by a mean C:N:P ratio of 29:3:1. Soil microbial C, N and P were positively related with the age of mine spoils, the values for the youngest spoil (5 yr old) being about four times lower compared to native forest soil. Total soil N was also positively related with age of spoil. The data suggest that microbial biomass can be taken as a functional index of soil redevelopment. Key words: Surface coal mining, soil microbial biomass C, biomass N, biomass P, mine spoil

The Effect on Soil Microbial Biomass and Soil Nutrient of Interplanted in Chestnut Forest

2013 ◽  
Vol 726-731 ◽  
pp. 474-478
Author(s):  
Zhi Chen Yang ◽  
Hong Li ◽  
Lian Di Zhou ◽  
Jin Shun Bai
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Microbial Biomass Carbon ◽  
Soil Nutrient ◽  
Ammonium Nitrogen ◽  
Available Phosphorus ◽  
Biomass Carbon ◽  
Turnover Rates ◽  
Soil Microbial ◽  
Natural Grass

By analyzing the different crop interplanting test in chestnut forests, the results show that soil nitrate nitrogen, ammonium nitrogen and available phosphorus fell in October when intercropped plants, this may be related to the growth of chestnut trees absorb nutrients and microorganisms in the soil. The results of this study show that interplanting different plants had an impact on soil microbial biomass carbon and microbial biomass phosphorus. Microbial biomass carbon turnover rate in the order: ryegrass> clean tillage> natural grass> Alfalfa> flat Agropyron> soybean; turnover rates of soil microbial biomass phosphorus in the order: clean tillage> Alfalfa> ryegrass natural grass> soy> flat crested wheatgrass.

scholarly journals Soil microbial biomass under mulch types in an integrated apple orchard from Southern Brazil

2011 ◽  
Vol 68 (2) ◽  
pp. 217-222 ◽  
Author(s):  
Denice de Oliveira Almeida ◽  
Osmar Klauberg Filho ◽  
Henrique Cesar Almeida ◽  
Luciano Gebler ◽  
Aline Franciane Felipe
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Apple Orchard ◽  
Southern Brazil ◽  
Pine Needle ◽  
Nitrogen And Phosphorus ◽  
Soil Microbial ◽  
Microbial Nitrogen ◽  
Microbial Carbon ◽  
Black Plastic

The use of mulching is an alternative to control weeds but there are few studies on its effect on soil quality. In this sense, this study aimed to evaluate the effect of types of mulching on the attributes of microbial carbon, nitrogen and phosphorus in a Typic Hapludox with production of integrated apples in southern Brazil. The experiment was conducted in randomized blocks in the Vacaria, state of Rio Grande do Sul, southern Brazil. The soil mulch types studied were: pine needle, sawdust, black plastic and a control. The soil samples were collected in February (summer) and August (winter) of 2006, and the attributes related to total organic and microbial carbon, nitrogen and phosphorus were determined. Organic mulchings (pine needle and sawdust) promoted lower soil temperature, and greater moisture, microbial carbon (Cmic), microbial nitrogen (Nmic), and the ratios Cmic:Corg, Nmic:Norg and microbial C:N than black plastic. Microbial phosphorus was greater in winter. Sawdust mulching promoted the best conditions to microbial biomass in winter. The mulch types increased the microbial compartment in winter as compared to the nonweeded control .

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