Decomposition and nutrient release of pure Cupressus forest litter in Sichuan Basin

Abstract

Abstract: The study resucts showed that the mineralization of organic carbon and other nutrients in Cupressus litter in Sichuan Basin was very slow,with a half live of 33 weeks for organic carbon,433 weeks for nitrogen,10 weeks for phosphorus,24 weeks for potassium,86 weeks for calcium,and 12 weeks for magnesium.The nitrogen shortage induced by slow mineralization of the litter could be the main factor restricting the early growth of Cupressus.It is necessary to introduce some fast-growth broadleaf woody species in managing pure artificial Cupressus forest to improve litter property,to speed up nutrient release,turnover and cycling,and to enhance economic benefits.

Key words: North Loess Plateau, Alfalfa (Medicago sativa), Artificial grassland, Community succession, Plant diversity, Forest-steppe ecotone

CLC Number:

S718.5

TIAN Maojie. Decomposition and nutrient release of pure Cupressus forest litter in Sichuan Basin[J]. cje, 2005, (10): 1147-1150.

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