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中国农学通报 ›› 2022, Vol. 38 ›› Issue (23): 70-76.doi: 10.11924/j.issn.1000-6850.casb2021-0860

所属专题: 生物技术 园艺

• 资源·环境·生态·土壤·气象 • 上一篇    下一篇

山东省赤松人工林土壤理化特性与综合肥力

程鸿雁1(), 张兰英2, 王凤3, 杜振宇4()   

  1. 1山东省地质调查院,济南 250012
    2济南市国有北郊林场,济南 250119
    3淄博市张店区园林绿化服务中心,山东淄博 255090
    4山东省林业科学研究院(山东黄河三角洲森林生态系统定位研究站),济南 250014
  • 收稿日期:2021-09-02 修回日期:2021-11-20 出版日期:2022-08-15 发布日期:2022-08-08
  • 通讯作者: 杜振宇
  • 作者简介:程鸿雁,女,1974出生,山东淄博人,高级经济师,本科,主要从事林业经济和管理方面的工作。通信地址:250012 山东省济南市荆山路17号,Tel:0531-86405698,E-mail: rblzy-002@163.com
  • 基金资助:
    山东省林业科技创新项目“山东省困难立地人工林生态稳定性评价与调控技术”(LYCX03-2018-14);山东省农业科技资金项目(林业科技创新)“山东林草自然资源生命共同体理论体系研究”(2019LY010)

Soil Physicochemical Characteristics and Comprehensive Fertility of Pinus densiflora Artificial Forests in Shandong Province

CHENG Hongyan1(), ZHANG Lanying2, WANG Feng3, DU Zhenyu4()   

  1. 1Shandong Institute of Geological Survey, Jinan 250012
    2State-owned Northern Outskirt Forest Farm, Jinan 250119
    3Zhangdian District Administration of Landscape and Greening of Zibo City, Zibo, Shandong 255090
    4Shandong Academy of Forestry (Forest Ecosystem Positioning Research Station of the Yellow River Delta), Jinan 250014
  • Received:2021-09-02 Revised:2021-11-20 Online:2022-08-15 Published:2022-08-08
  • Contact: DU Zhenyu

摘要:

土壤理化特性是土壤综合肥力的重要组成部分,对于诊断土壤质量优劣具有重要意义,可为人工林的合理经营提供参考。以山东省鲁中、鲁东山区35块典型赤松人工林样地为对象,取样测定了13个土壤指标,研究了林地土壤的物理和化学特性,并采用综合指数法评价了赤松林地的土壤综合肥力。结果表明:山东省赤松人工林土壤全氮、有机质、有效氮和有效钾含量整体上均处于中等水平,而有效磷含量较低;土壤pH均为酸性,电导率(EC)普遍很低,变幅为19.6~115.6 μS/cm,阳离子交换量(CEC)也整体较低;供试样地土壤容重和孔隙度处于“适中”等级的分别占74.54%和65.71%;所有样点的土层厚度均处于适中水平;土壤粘粒含量的平均值仅为9.35%,均处于“较低”或“很低”水平,导致粉粘比相对较高。不同样地间的土壤综合肥力存在较大差异,以烟台市昆嵛区和淄博市沂源县的赤松林土壤综合肥力最高,显著高于其它县区;鲁中山地赤松林的土壤肥力指数要高于鲁东丘陵区。林分密度与土壤综合肥力指数之间表现出显著负相关。

关键词: 赤松人工林, 土壤理化特性, 综合肥力指数, 相关分析, 林分密度, 山东省

Abstract:

Soil physicochemical characteristics are important parts of soil fertility. The research on soil physical and chemical properties and the evaluation of soil fertility are of great significance for the diagnosis of soil quality, which can provide a scientific basis for the rational management of artificial forests. The authors took 35 typical plots of Pinus densiflora forests in the mountainous area of central Shandong Province and the hilly area of eastern Shandong Province as the objects, through the combination of field investigation and indoor analysis, 13 soil indexes were sampled and determined, and the physical and chemical properties of forest soil were studied. The comprehensive index method was used to evaluate the soil fertility of P. densiflora forests. The results showed that the content of soil organic matter, total nitrogen, available nitrogen and available potassium were at the middle level, while the content of available phosphorus was relatively low. The soil pH was acidic, and the soil electrical conductivity (EC) was generally very low, ranging from 19.6 to 115.6 μS/cm, and cation exchange capacity (CEC) was also low as a whole; the soil bulk density and porosity were in the moderate grade, 74.54% and 65.71% respectively. The overall thickness of soil layer was at a moderate level. The average value of soil clay content was only 9.35%, which was at a low or very low level, resulting in a relatively high silt/clay ratio. There were great differences in soil comprehensive fertility among different plots; the comprehensive soil fertility of P. densiflora forests in Kunyu District of Yantai and Yiyuan County of Zibo were the highest, significantly higher than that in other counties. The soil fertility index of P. densiflora forests in the mountainous area of central Shandong was higher than that in the hilly area of eastern Shandong. There was a significantly negative correlation between stand density and soil comprehensive fertility index.

Key words: Pinus densiflora artificial forest, soil physicochemical characteristics, comprehensive fertility index, correlation analysis, stand density, Shandong Province

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