[PDF] Top 20 Microbial biomass C and N and mineraliza

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... + and P, showing close microbial control of nutrient ...increase, and to labile C addition with a strong decrease in cover, providing the first direct field evidence that nutrient limitation ... Lihat dokumen lengkap

... soil and ingest large amounts of soil, organic matter and leaf ...measured microbial biomass C, N and P and the fungal-to-bacterial ratios in worm- worked soil ... Lihat dokumen lengkap

... in microbial C after 5 yr labile C addition ...suggests C limitation of the microbial biomass in the longer ...Such C limitation of soil microbial biomass is ... Lihat dokumen lengkap

... urease and dehydrogenase) proved to have serious limitations with respect to their abil- ity to reflect soil degradation caused by the pollution inci- dents that had occurred at the sampling ...soil C or ... Lihat dokumen lengkap

... of microbial activity such as min- eralization of C or N (DeLuca et ...Schimel and Clein, 1996; Skogland et ...Soulides and Allison, 1961). However, previous work showed that the soil ... Lihat dokumen lengkap

... that microbial N utili- zation had a lower response threshold to C and N supply than did ...(1) microbial N storage; (2) N uptake and release of ... Lihat dokumen lengkap

... (8 N treatments × 4 replicates) at the beginning of the growing season in May ...diameter and 15 cm in depth) were collected along a diagonal line in each plot, and then completely mixed into one ... Lihat dokumen lengkap

... acids and dissolved or- ganic matter has a high energy requirement (Wareing and Patrick, 1975), which increases ...the C-to-N ratio of the detritus is high, the decompo- sers probably have no ... Lihat dokumen lengkap

... soil microbial biomass carbon than long-term N ...Zhong and Cai (2007) studied that a long-term application of inorganic fertilizers (13 years) for flooded double rice crops, the number of ... Lihat dokumen lengkap

... larger microbial communities and stabilization of enzymes on humic materials (Burns, 1982; Bending et ...energy and nutrients present in complex substrates and catalyze decomposition ... Lihat dokumen lengkap

... ammonium and nitrate content in relation to the pasture age is comparable with the data reported by Hassink [36], who found an increase in the total available N and a decrease in the ... Lihat dokumen lengkap

... starch and wheat straw after seven days of ...Setälä and Huhta, 1991; McGo- nigle, ...on microbial growth and respiration may involve (1) the release of nutrients from the grazed, either ... Lihat dokumen lengkap

... extracted microbial quinone was analysed using high performance liquid chromatography, HPLC (Shimadzu, ...types and concentrations of quinones were determined with HPLC equipped with an ODS column ... Lihat dokumen lengkap

... measured and the possibility of correlations between these variates, MANOVA ana- lyses were ...ANOVAs and Tukey tests were performed to con®rm the source of these ...Materials and methods section, ... Lihat dokumen lengkap

... bulked and mixed ...taken and diluted with water threefold, filtered through surgical gauze and stored at ±20 8 ...bulked and a representative sample (40 ml) taken and stored at ±20 8 ... Lihat dokumen lengkap

... Much more uncertain is the question whether the transition of any form of CT to a form of conservation tillage will increase the mass of soil organic matter per unit area, giving chance to sequester C and ... Lihat dokumen lengkap

... sinks and sources to the atmosphere. Accurate estimation of forest biomass is required for greenhouse gas inventories and terrestrial carbon accounting (Muukkonen and Heiskanen, ...The ... Lihat dokumen lengkap

... 15 N and 13 ...soil and feeding them on a diet of 15 N/ 13 C labelled ...washed and starved overnight to void their guts before being killed by ...earthworm and grass were ... Lihat dokumen lengkap

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