浙江乌岩岭国家级自然保护区山豆根分布生境特征及生长特性研究  

Habitat and Growth Characteristics of Euchresta japonica in Wuyanling National Nature Reserve

作　　者：夏丽芝[1] 刘西 雷祖培 潘向东 权伟 XIA Li-zhi;LIU Xi;LEI Zu-pei;PAN Xiang-dong;QUAN Wei(Wenzhou Key Lab of Adding Carbon Sinks and Reducing Carbon Emissions of Agriculture,Forestry and Fishery Ecosystem,Wenzhou Vocational College of Science and Technology,Wenzhou 325006,China;Wuyanling National Nature Reserve Administration of Zhejiang,Taishun 325500,China;Zhejiang College of Security Technology,Wenzhou 325016,China)

机构地区：[1]温州科技职业学院,温州市农林渔生态系统增汇减排重点实验室,浙江温州325006 [2]浙江乌岩岭国家级自然保护区管理中心,浙江泰顺325500 [3]浙江安防职业技术学院,浙江温州325016

出　　处：《浙江林业科技》2022年第6期28-33,共6页Journal of Zhejiang Forestry Science and Technology

基　　金：浙江省林业局2019年第二批省林业发展和资源保护专项“山豆根珍稀濒危野生植物保护”。

摘　　要：2020年7月20—30日,调查了浙江乌岩岭国家级自然保护区山豆根Euchresta japonica 5个分布区域的生境特征及其生长特性。结果表明,山豆根主要沿溪谷分布,海拔为830~1 078 m,林分平均郁闭度约70.6%,平均土层厚度为14.34 cm,平均土壤pH为4.49,平均土壤有机质含量为151.02 g·kg^(-1);伴生植物主要为深山含笑Michelia maudiae、荚蒾Viburnum dilatatum、花葶薹草Carex scaposa.、尾叶挪藤Stauntonia obovatifoliola ssp urophylla等;山豆根合计分布面积为3 900 m^(2),其中大湖区域的分布面积最大,为2 000 m^(2),平均分布密度为2 372株·hm^(-2);山豆根平均地径为3.87 mm,平均株高为40.16 cm,平均单株叶片数量为3.51片;在5个分布区域,山豆根地径差异极显著(P<0.01),叶片数量差异显著(P<0.05),株高无显著差异(P>0.05),主要受土壤pH、容重、含水量及土层厚度的影响。以上研究结果可为浙江乌岩岭国家级自然保护区开展山豆根就地保护及野外回归提供科学依据。During 20th-30th July, 2020, investigations were carried out on habitat and growth characteristics of 5 distribution areas of Euchresta japonica in Wuyanling Nature Reserve, Zhejiang province. The results showed that Eu. japonica mainly distributed along the stream, at altitude of 830 m-1 078 m, with average canopy density of 70.6%, in average depth of stand soil layer of 14.34 cm, average pH of 4.49, and the average content of soil organic matter of 151.02 g/kg. Associated plant species were mainly Michelia maudiae, Viburnum dilatatum, Carex scaposa, Stauntonia obovatifoliola ssp. urophylla, etc. The total area of Eu. japonica distribution was 3900 m^(2) in the Reserve. Their mean ground diameter was 3.87 mm,mean height of 40.16 cm, average number of leaves per plant of 3.51. It had extremely significant different of ground diameter of Eu. japonica among the 5 distribution areas(P < 0.01), significant difference of leaf number(P < 0.05), and no significant difference of height(P > 0.05). They were mainly affected by soil pH, soil bulk density, soil water content and soil thickness.

关 键 词：山豆根 分布 生境 生长特性 浙江乌岩岭国家级自然保护区 

分 类 号：S718.53[农业科学—林学]