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.

陕北黄土丘陵区油松林枯枝落叶层蓄积量及其动态变化

吴钦孝刘向东赵鸿雁

中国科学院水利部西北水土保持研究所,杨陵712100

收稿日期:1992-01-06 修回日期:1900-01-01 出版日期:1993-01-25 发布日期:1993-01-25

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

摘要/Abstract

关键词: 油松林, 枯枝落叶层, 蓄积动态

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

吴钦孝刘向东赵鸿雁. 陕北黄土丘陵区油松林枯枝落叶层蓄积量及其动态变化[J]. , 1993, 29(1): 63-66.

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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