کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9445252 | 1304282 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microbial transformation of organic matter in soils of montane grasslands under different management
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The study compared the effects of mowing, mulching, and no-treatment, applied to a mountain grassland over five years, on microbial transformation of soil organic matter (SOM). Microbial biomass, microbial respiration, cellulose decomposition and mineralization were measured in the laboratory eight times during the three-year experiment. In addition, soil phosphatase activity and factors limiting microbial growth were assessed once to complete the results. Mowing increased soil microbial biomass and carbon use efficiency, which supported carbon sequestration in soil. In contrast, mulching led to a decrease in microbial biomass and microbial metabolic efficiency due to the limitation of easily decomposable carbon. This was a consequence of changes in temperature and light conditions under the mulch layer, which suppressed plant growth and rhizodeposition. Processes causing organic matter transformation in the mulched grassland were similar to those of the untreated grassland. Annual mowing appears to be most suitable for maintenance of SOM content and sustainability of montane grasslands.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 28, Issue 3, March 2005, Pages 225-235
Journal: Applied Soil Ecology - Volume 28, Issue 3, March 2005, Pages 225-235
نویسندگان
Eva UhlÃÅová, Miloslav Å imek, Hana Å antrůÄková,