Measuring Litter Decomposition of Cassiafistula L. in Different Land use Manafements
Abstract—Litter decomposition is a useful biological indicator involving the interaction of vegetation, soil nutrient availability and soil organisms. The present study conducted under three different sites i.e. natural forest site, and two afforested sites of MOIL, and WCL to know the effect of different management plans on soil organic formation and nutrient release. Litter bag experiment was designed with leaf litter of Cassia fistulaL. and site specific soil mesofauna for a period of one year. Litter decay and carbon sequestration capacity of soil studied and periodical changes in organic carbon, nitrogen, phosphorus, potassium, lignin, cellulose etc., were observed during the study period. The litter decay constant (klitday-1) was observed in natural forest, afforested coal mine site and afforested manganese mine site were 0.0022, 0.0020 and 0.0019 respectively. After one year, the leaf litter of Cassia fistula observed with high N mineralization from 1.9 to 0.66%; 0.99 to 0.33% and 1.6 to 0.43% in natural forest, WCL and MOIL respectively. Present work concludes that the following important process to be considered for increasing soil carbon sequestration: (1) Input rates of organic matter (type of leaf litter), (2) Migration of soil organisms (type of soil fauna) (3) Rate of litter decomposition, (4) Rate of nutrient mineralisation, (5) Improvement of Physico-chemical properties of mine restored soils. Hence, the development of productive forests on afforested mine lands could be converted into long-term sink for atmospheric carbon.
Keywords: Collembola, litter decomposition, manganese mine, coal mine, soil carbon sequestration.