Abstract: The storage and chemical properties of the forest litter in dark coniferous forest of Sejila Mountain were studied. The results showed that the existing storage was 5.863t穐m^-2 and the annual litter fall was 0.3205 t穐m^-2. It implied that the forest litter decomposed slowly and accumulated quickly, and the turnover of nutrient circles was slow. The contents of N, Ca, Na, and Mn nutrient elements in litter layer were in the order of un-decomposed layer (U layer) abstract > semi-decomposed layer (S layer) abstract > decomposed layer (D layer) abstract, those of K, Fe, and Mg were in the order of D layer > S layer > U layer, and P element content was in the order of U layer > D layer > S layer. The pool of elements was 78.483 kg穐m^-2 N, 3.843 kg穐m^-2 P, 48.205 kg穐m^-2 K, 23.115 kg穐m^-2 Ca, 13.157 kg穐m^-2 Na, 30.554 kg穐m^-2 Fe, 2.113 kg穐m^-2 Mn and 27.513 kg穐m^-2 Mg. The turnover of forest litter was the total of nutrient release accumulation. K, Fe, and Mg were enriched, and N, Ca, Na, Mn, and P were released with the turnover rate in the order of N > Ca > Na > Mn >P.

Key words: Dark coniferous forest, Forest litter, Chemical properties, Sejila Mountains, Tibet