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- Title
Effects of different litter treatments on soil microbial biomass carbon and nitrogen in temperate grassland.
- Authors
Zhidan Ba; Geer, Teni; Huishi Du; Huanhuan Zhao; Han Bao
- Abstract
Soil microbial biomass carbon (SMBC) and soil microbial biomass nitrogen (SMBN) are important indicators of ecological function. In this study, the surface layers of the temperate grassland 0-10, 10-20, 20-30, and 30-40 cm were selected as the research objects. The relationships between soil microbial biomass (SMB) and the different treatments as well as the soil depth were discussed to provide a scientific basis for the sustainable development of grassland ecosystems. This study took Changling Grassland Agriculture and Animal Husbandry Ecological Experiment Station as the research sites. Experiments were conducted with different litter treatments at different soil depths on SMBC and SMBN contents including (1) keeping the litter and biomass untouched when vegetation falls in autumn (WL); (2) not supplying Leymus chinensis and harvesting around biomass, i.e. harvesting the litter on the ground without retaining the litter and biomass on the ground and without adding Leymus chinensis (WG); (3) retaining over ground biomass and supplying Leymus chinensis, which was to retain the litter and add Leymus chinensis to the ground when the original litter remains unchanged (ZL); (4) grounding biomass supplementation with seeded Leymus chinensis by adding Leymus in the soil while retaining the original litter (ZG). The results showed that the contents of SMBC, SMBN, and the carbon (C)/nitrogen (N) ratio demonstrated decreasing trends with the increase of soil depth. ZL had the highest SMBC and SMBN with the highest concentrations of 133.87 and 309.69 mg/kg, respectively. At profile depths of 0-10 cm, SMBC and SMBN decreased with increasing soil depth in various treatments except in WG. When soil depth increased, the C/N ratio decreased with the highest in WG and the lowest in WL.
- Subjects
BIOMASS; GRASSLANDS; SOIL depth; SUSTAINABLE development; SOILS; GRASSLAND soils
- Publication
Journal of Biotech Research, 2022, Vol 13, p260
- ISSN
1944-3285
- Publication type
Article