山杜英人工林生长特性及对土壤的影响分析

Growth Characteristics of Elaeocarpus sylvestris Plantation and its Influence on the Soil

通过树干解析及对土壤理化性质的分析,研究了山杜英人工林的生长特性及对土壤性能的改良影响。结果表明,山杜英树高、胸径生长呈现出极为相似的生长特征,即随着年龄增长而增长,12年生时,树高可达11.5m,去皮胸径可达12cm。而材积生长在12a期间一直处于速生期;山杜英混交林较其他混交林土壤除pH值相似之外,其他养分含量均不同,尤其氮与磷元素含量有所提升,山杜英混交林对土壤具有良好的改善土壤性能。

Through the analysis of stem analysis and soil physical and chemical properties, the growth characteristics of Elaeocarpus sylvestris plantation & improvement of soil properties were studied. Result shows that the height & DBH growth of Elaeocarpus sylvestris shows very similar growth characteristics, that is, which increase with the increase of age;for 12-year-old Elaeocarpus sylvestris , tree height &peeling breast diameter reach 11.5 m & 12 cm,respectively;the volume growth of 12-year-old Elaeocarpus sylvestris has been in the fast-growing period;the soil of the mixed forest of Elaeocarpus sylvestris compared with the soil of other mixed forest,the other nutrient contents are different except the similar Ph value, especially the content of nitrogen and phosphorus were improved. The mixed forest of Elaeocarpus sylvestris has optimal soil properties for soil improvement.