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对油松栓皮栎混交林,油松纯林和栓皮栎纯林三种林分的根系形态、分布和生物量分别进行了调查。研究结果表明:1.栓皮栎纯林、混交林、油松纯林的细根(<2毫米)量和粗根(2—10毫米)量分别为:2440.18公斤/公顷和3897.11公斤/公顷;1861.65公斤/公顷和3323.87公斤/公顷;1441.98公斤/公顷和1767.93公斤/公顷。2.在混交林中,栓皮栎平均单株细根量和粗根量均大于纯林栓皮栎,而油松平均单株细根量和粗根量小于纯林油松。3.在混交林中,各树种的根系分布合理,没有观察到两种林木根系间有排斥现象。
Root morphology, distribution and biomass of Pinus tabulaeformis mixed forest, Pinus tabulaeformis pure forest and Quercus variabilis forest were investigated respectively. The results showed as follows: (1) The fine root (<2 mm) and coarse root (2-10 mm) of the pure Quercus variabilis, mixed forest and pure Chinese pine were 2440.18 kg / ha and 3897.11 kg / ha respectively. 1861.65 kg / ha and 3323.87 kg / ha; 1441.98 kg / ha and 1767.93 kg / ha. In the mixed forest, the average single cotyledon per plant cotyledons and coarse roots were greater than the pure forest Quercus variabilis, while the Pinus tabulaeformis individual fine root and the amount of coarse roots is less than pure Pinus tabulaeformis. 3. In the mixed forest, the root distribution of each tree species is reasonable, no exclusion phenomenon between the two forest roots was observed.