Effect of Land Use on Microbial Biomass-C, -N and -P in Red Soils

2004 ◽  
pp. 315-322 ◽  
Author(s):  
G. C. Chen ◽  
Zhenli He
Keyword(s):  
Land Use ◽  
Microbial Biomass ◽  
Microbial Biomass C ◽  
Red Soils

Effect of land uses and elevation on microbial biomass carbon, nitrogen and water extractable carbon in Kumaon Himalaya, India

2018 ◽  
Vol 3 (02) ◽  
pp. 129-131
Author(s):  
R. P. Yadav ◽  
B. Gupta ◽  
P. L. Bhutia ◽  
J. K. Bisht ◽  
V. S. Meena ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Biomass ◽  
Microbial Population ◽  
Microbial Biomass Carbon ◽  
Microbial Biomass C ◽  
Strong Positive Correlation ◽  
Biomass Carbon ◽  
Land Uses ◽  
Kumaon Himalaya ◽  
Water Extractable

The change in land use as well as elevation changes microbial biomass carbon (C), nitrogen (N) and water extractable organic carbons (WOC), which are important parameters of soil fertility and essential for sustainable management of any land use. In Central Himalaya watershed (2B4D6) the land use pattern varies with elevation. The present study aims to examine the soils (0-30 cm depth) of different land uses i.e. agroforestry, silvipastoral and grassland for microbial biomass C, N, microbial population and WOC along the elevation. Microbial biomass C, N, microbial population and WOC contents varied significantly (less than 0.005) among land uses and it increased along the elevation. Maximum microbial biomass C and N was recorded in agroforestry, silvipastoral and minimum in grassland. While, WOC highest in silvipasture, agroforestry and grassland. Land uses along elevation had strong positive correlation with microbial biomass C, N and WOC. Thus it is concluded that microbial biomass C, N, microbial population and WOC changes significantly (less than 0.05) in different land uses and along elevation gradient.

Effects of land use on soil total and light fraction organic, and microbial biomass C and N in a semi-arid ecosystem of northwest China

Geoderma ◽  
2009 ◽  
Vol 153 (1-2) ◽  
pp. 285-290 ◽  
Author(s):  
Xiao-Ling Wang ◽  
Yu Jia ◽  
Xiao-Gang Li ◽  
Rui-Jun Long ◽  
Qifu Ma ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Biomass ◽  
Northwest China ◽  
Light Fraction ◽  
Microbial Biomass C ◽  
Arid Ecosystem ◽  
C And N ◽  
Effects Of Land Use ◽  
Semi Arid

Variation in soil microbial biomass in the dry tropics: impact of land-use change

Soil Research ◽  
2014 ◽  
Vol 52 (3) ◽  
pp. 299 ◽  
Author(s):  
Mahesh Kumar Singh ◽  
Nandita Ghoshal
Keyword(s):  
Land Use ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Depth ◽  
Natural Forest ◽  
Microbial Biomass C ◽  
Soil Microbial Biomass C ◽  
Soil Microbial ◽  
Land Use Types ◽  
C And N

The impact of land-use change on soil microbial biomass carbon (C) and nitrogen (N) was studied through two annual cycles involving natural forest, degraded forest, agroecosystem and Jatropha curcas plantation. Soil microbial biomass C and N, soil moisture content and soil temperature were analysed at upper (0–10 cm), middle (10–20 cm) and lower (20–30 cm) soil depths during the rainy, winter and summer seasons. The levels of microbial biomass C and N were highest in the natural forest, followed in decreasing order by Jatropha curcas plantation, degraded forest and the agroecosystem. The highest level of soil microbial biomass C and N was observed during summer, decreasing through winter to the minimum during the rainy season. Soil microbial biomass C and N decreased with increasing soil depth for all land-use types, and for all seasons. Seasonal variation in soil microbial biomass was better correlated with the soil moisture content than with soil temperature. The microbial biomass C/N ratio increased with the soil depth for all land-use types, indicating changes in the microbial community with soil depth. It is concluded that the change in land-use pattern, from natural forest to other ecosystems, results in a considerable decrease in soil microbial biomass C and N. Jatropha plantation may be an alternative for the restoration of degraded lands in the dry tropics.

Effects of land-use change from grassland to forest on soil sulfur and arylsulfatase activity in New Zealand

Soil Research ◽  
2001 ◽  
Vol 39 (4) ◽  
pp. 749 ◽  
Author(s):  
C. R. Chen ◽  
L. M. Condron ◽  
M. R. Davis ◽  
R. R. Sherlock
Keyword(s):  
Land Use ◽  
Enzyme Activity ◽  
Microbial Biomass ◽  
Land Use Change ◽  
Water Soluble ◽  
Microbial Biomass C ◽  
Organic S ◽  
Arylsulfatase Activity ◽  
Soil Sulfur ◽  
Effects Of Land Use

The effects of land-use change from grassland to forest on soil sulfur (S) and arylsulfatase enzyme activity were investigated by comparing soils under unimproved grassland and an adjacent 19-year-old exotic forest stand (mixture of Pinus ponderosa and P. nigra). Results showed that concentrations of organic S in topsoil under forest were significantly lower [418 µg/g (0–5 cm), 398 µg/g (5–10 cm)] than corresponding soil depths under grassland [541 µg/g (0–5 cm), 468 µg/g (5–10 cm)]. On the other hand, inorganic S concentrations were significantly higher in soil under forest at all depths compared with grassland. The inorganic S concentration in soil under grassland increased with depth, but there was no significant difference observed at different depths under forest. The decrease in organic S [and organic carbon (C)] in soil under forest was due to the enhanced mineralisation of organic components. The accumulation of inorganic S in the soil profile under forest was mainly attributed to enhanced mineralisation, although decreased leaching, increased sulfate-S adsorption, and increased atmospheric inputs by canopy interception of aerosols could have contributed. Microbial biomass C and S and arylsulfatase activity were higher in topsoil under grassland than forest. Lower arylsulfatase activities under forest compared with grassland at the time of sampling suggest that mineralisation of organic S under forest was not currently mediated primarily by enzyme activity, although enzyme activity may have been important at earlier stages of forest development. Arylsulfatase activity was significantly correlated with soil organic C, water-soluble C, microbial biomass C, total S, organic S, and microbial biomass S in soil under grassland and forest. Significant concentrations of organic S and microbial biomass S were present in the forest floor (litter and fermentation layers). These pools would be important for S cycling and availability in forest ecosystems. S mineralisation, S fractions, microbial biomass S, microbial biomass C.

Sign in / Sign up

Export Citation Format

Share Document