RESEACHES ON LITTERFALL DISTRIBUTED IN SEVEN FORESTS AT VARIED ALTITUDES, ON AILAO MOUNTAIN, YUNAN
哀牢山北段主要森林类型凋落物的研究

In this paper, the litterfall productions, compositions. Seasonal distribu- tions and nutrient element tumovers were compared on the seven forest types distributed on the east and the west vertical zones in Ailao Mountain. The results are useful for recognizing litterfall element returns in the forests in Southwest monaoon area, subtropical montane forests manergement, rational exploitation and protection of soil source, and enhance of produ- ctivity.