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马尾松杜仲混交林根系特性研究
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摘要:
对马尾松杜仲混交林、马尾松纯林、杜仲纯林的根系形态、分布及其生物量进行了调查研究。结果表明:马尾松杜仲混交林、马尾松纯林、杜仲纯林根系生物量分别为30974.9、26783.4和22000.8kg/ha;细根量分别为3991.7、1177.3和5185.3kg/ha。
关键词:  马尾松 杜仲 混交林 根系分布 根量
DOI:
基金项目:
Studies on the Characteristics of Root System in Pine-eucommia Mixed Stand
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Abstract:
The root systems of pine-eucomia mixed stand ,pure pine stand and pure eucommia stand were investigated on their morphology,distribution ,and biomass.The results showed that the fine root(<2mm in diameter)biomass and total root biomass were 26783.4kg/ha and 1177.3kg/ha in a 28-year-old pure pine stand ,22000.8kg/ ha and 51 85. 4kg/ ha in a 32- year-old pure eucommia stand, 30974.9kg/ha and 3991.7kg/ha in the pine-eucommia mixed stand in the same age, respectively. The fine root biomass per pine tree in the mixed stand was 26. 97%higher than that in the pure pine stand, and the fine root biomass per eucommia tree was 3.83% higher than that in the pure eucommia stand. The root system in the mixed stand,especially fine roots,distributed more reasonably and no repellency between pine roots and eucommia roots was oberved. Some jointed roots between the two species were observed.
Key words:  Pinus massoniana,Eucommia,ulrnoides,Mixed stand,Root biomass,Root distribution

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