Comparision of Litterfall and Its Process Between Some Forest Types in Loess Platean
Comparision of Litterfall and Its Process Between Some Forest Types in Loess Platean
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发表时间：
2001
影响因子：
3.9
通讯作者：
Z. Yi
中科院分区：
文献类型：
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作者：
Z. Yi
研究了油松林、山杨林、刺槐林和沙棘林的凋落物及其动态过程。结果表明，上述林分每公顷现存凋落物量分别为17.95，8.34，5.48，4.75t，年凋落物量主要发生在秋季和初冬，但不同林型的凋落过程不尽相同，主要取决于其生物学和生态学特性。凋落物中以树叶为主，分别占91.1%、73.5%、62.0%、71.8%。林分凋落物年分解量分别为2.75，2.25，1.97，1.62t/hm 2。因此，在现有的林龄和结构条件下，各林型凋落物量仍有一定程度的逐年增加。凋落物增加量分别为0.49、0.84、1.11、0.83t/hm 2。
The litterfall and its dynamic process in the forest types of Pinus tabulaeformis, Populus davidiana, Robinia pseudoacacia and Hippophae rhamnoides are studied. The results of the study showed that the per hectare existing litter amount in above mentioned fore stands is 17.95,8.34,5.48,4.75 t, respectively, and the annual litterfall occurs mainly at autumn and early winter, but its process in different forest types is not identical, its depend mainly on their biological and ecological characteristics. In litter the main is leave, and it accounts for 91.1% ,73.5%,62.0%,71.8%, respectively. The annual litter decomposition in the fore stands is determined as 2.75 , 2.25 ,1.97,1.62 t/hm 2. So at the present conditions of stand age and structure the litter amount in each forest type is still increased every year in certain extent. The increased amount of litter is 0.49,0.84,1.11,0.83 t/hm 2, respectively.