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