Chemical properties of litter in dark coniferous forest of Sejila Mountains in Tibet
Zhong, G.; Xin, X.
Ying Yong Sheng Tai Xue Bao 15(1): 167-169
2004
ISSN/ISBN: 1001-9332 PMID: 15139213 Document Number: 568551
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. 863 t . hm2 and the annual litter fall was 0. 3205 t . hm-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) > semi-decomposed layer (Slayer) > decomposed layer (D layer), 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 . hm-2 N, 3. 843 kg . hm-2 P, 48. 205 kg . hm-2 K, 23. 115 kg . hm-2 Ca, 13. 157 kg . hm-2 Na, 30. 554 kg . hm-2 Fe, 2. 113 kg . hm-2 Mn and 27. 513 kg . hm-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.