陕北黄土丘陵区油松林枯枝落叶层蓄积量及其动态变化

›› 1993, Vol. 29 ›› Issue (1): 63-66.

• 研究简报 • Previous Articles Next Articles

LITTER AMOUNT AND ITS DYNAMIC CHANGE OF PINUS TABULAEFORMIS PLANTATION IN LOESS HILLY REGION OF NORTHERN SHANXI

Wu Qinxiao,Liu Xiangdong,Zhao Hongyan

Northwestern Institute of Soil and Water Conservation,the Chinese Academy of Sciences and the Ministry of Water Conservancy, Yangling 712100

Received:1992-01-06 Revised:1900-01-01 Online:1993-01-25 Published:1993-01-25

Abstract

Abstract: The hydrological function of litter on woodland is closely connected withits amount. It is determined that the existing amount of litter in plantation of Pinus tabulaeformis at the age of 27-29 is 17.95t/ha; the annual litterfall am-ounts to 3.24t/ha. The changes of grand total litterfall (Y) with time (t)conform to functional equation: Y=-203.10+773.65t-113.60t²+6.32t³; andthe annual litter decomposition adds up to 3.23t/ha, its decomposition processchanges with seasons, more fast in rainly season and more slowly in winter.Thus at the present age and construction state, the litterfall and its decompo-sition of Pinus tabulaeformis are in balance, and the total amount of litter isrelatively constant.

Key words: Plantation of Pinus tabulaeformis, Litter, Dynamic change of litter amount

Wu Qinxiao;Liu Xiangdong;Zhao Hongyan. LITTER AMOUNT AND ITS DYNAMIC CHANGE OF PINUS TABULAEFORMIS PLANTATION IN LOESS HILLY REGION OF NORTHERN SHANXI[J]. , 1993, 29(1): 63-66.

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LITTER AMOUNT AND ITS DYNAMIC CHANGE OF PINUS TABULAEFORMIS PLANTATION IN LOESS HILLY REGION OF NORTHERN SHANXI

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