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应用生态学报 ›› 2018, Vol. 29 ›› Issue (3): 732-738.doi: 10.13287/j.1001-9332.201803.004

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林分密度对马尾松林林下物种多样性和土壤理化性质的影响

孙千惠1, 吴霞1, 王媚臻1, 张柳桦1, 姚小兰1, 齐锦秋1,2, 郝建锋1,3*   

  1. 1四川农业大学林学院, 成都 611130;
    2四川省木材工业与家具工程重点实验室, 成都 611130;
    3四川省水土保持与荒漠化防治重点实验室, 成都 611130
  • 收稿日期:2017-08-06 出版日期:2018-03-18 发布日期:2018-03-18
  • 通讯作者: * E-mail: haojf2005@aliyun.com
  • 作者简介:孙千惠, 女, 1996年生, 本科生. 主要从事森林生态学研究. E-mail: sunnnma@126.com
  • 基金资助:

    本文由四川省教育厅一般项目(自然科学)(15ZB0020)、国家自然科学基金项目(31370628)和四川农业大学科研兴趣培养项目(20150190)资助

Effects of stand density on understory species diversity and soil physicochemical properties of Pinus massoniana plantation.

SUN Qian-hui1, WU Xia1, WANG Mei-zhen1, ZHANG Liu-hua1, YAO Xiao-lan1, QI Jin-qiu1,2, HAO Jian-feng1,3*   

  1. 1College of Forestry, Sichuan Agricultural University, Chengdu 611130, China;
    2Sichuan Province Key Laboratory of Wood Industry and Furniture Engineering, Chengdu 611130, China;
    3Sichuan Province Key Laboratory of Soil and Water Conservation and Desertification Control, Chengdu 611130, China
  • Received:2017-08-06 Online:2018-03-18 Published:2018-03-18
  • Contact: * E-mail: haojf2005@aliyun.com
  • Supported by:

    This work was supported by the Sichuan Provincial Department of Education General Project (Natural Science) (15ZB0020), the National Natural Science Foundation of China (31370628), and the Sichuan Agricultural University Research Interest Cultivation (20150190)

摘要: 研究四川新津文峰山1057、1136、1231、1383和1515株·hm-2 5种林分密度的25年生马尾松人工公益林林下植物物种多样性、土壤理化性质及其之间的相关性.结果表明: 共发现维管植物110种,隶属57科98属;随着林分密度的增大,林下物种呈现出阳生性→中生性→阴生性的演替格局,且不同密度对马尾松公益林土壤的全钾和有机质有显著影响,随着林分密度的增大,林下植物有机质和全钾含量均呈先增大后减小的趋势;林下植物多样性指数和土壤因子含量随林分密度增大的变化趋势大致相同,且均在密度为1136株·hm-2时取得最大值.全磷、速效钾、全钾和全氮的含量与林下植物多样性指数的相关性最密切.当密度在1136株·hm-2时更利于提高文峰山马尾松公益林林下物种多样性的稳定性和土壤肥力.

Abstract: We analyzed understory species diversity, soil physicochemical traits and their relationships in the 25-year-old non-commercial Pinus massoniana plantations with five different stand densities, i.e., 1057, 1136, 1231, 1383 and 1515 trees·hm-2, in Wenfeng Mountain, Xinjin District, Sichuan Province, China. The results showed that a total of 110 species were found, belonging to 57 families and 98 genera. With the increase of tree density, the understory species showed a succession pattern from positive to moderate to shady. Different densities had significant effects on the contents of total potassium and organic matter in the soils. With the increase ofdensity, the contents of organic matter and total potassium in understory vegetation first increased and then decreased. The trends of the relationship between both diversity and soil physiochemical characteristics and tree density were similar. Both of them increased with the increase of density, with the maximum value presented at the density of 1136 trees·hm-2. The concentrations of total phosphorus, available potassium, total potassium and total nitrogen was closely related to plant diversity index. The results suggested that the density at 1136 trees·hm-2 would be more beneficial to improve the stability of species diversity and soil fertility of P. massoniana non-commercial plantations in Wenfeng Mountain.