[1]马骧,谷雨晴,邹朋峻,等.土壤理化性质对优势树种根系生物量的影响[J].江苏林业科技,2023,50(02):14-19.[doi:10.3969/j.issn.1001-7380.2023.02.003]
　Ma Xiang,Gu Yuqing,Zou Pengjun,et al.Effect of soil physio-chemical properties on root biomass of dominant trees[J].Journal of Jiangsu Forestry Science &Technology,2023,50(02):14-19.[doi:10.3969/j.issn.1001-7380.2023.02.003]
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土壤理化性质对优势树种根系生物量的影响()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第50卷
期数:
2023年02期
页码:
14-19
栏目:
试验研究
出版日期:
2023-04-30

文章信息/Info

Title:
Effect of soil physio-chemical properties on root biomass of dominant trees
文章编号:
1001-7380（2023）02-0014-06
作者:
马骧1;  谷雨晴2;  邹朋峻2; 徐丽丽3*
1.常州市金坛区森林资源与湿地管理中心，江苏 常州 213200；
2.南京林业大学生物与环境学院，南方现代林业协同创新中心，江苏 南京 210037；
3.江苏省林业科学研究院，江苏 南京 211153
Author(s):
Ma Xiang1;  Gu Yuqing2;  Zou Pengjun2;  Xu Lili3*
1. Forest Resources and Wetland Management Center of Jintan District, Changzhou, Changzhou 213200, China;
2. College of Biology and the Environment, Co-Innovation Center of Sustainable Forestry in Southern China,Nanjing Forest University, Nanjing 210037, China；
3. Jiangsu Academy of Forestry, Nanjing 211153, China
关键词:
细根生物量; 土壤养分; 速效养分; 有机质; 典型林分
Keywords:
Fine root biomass; Soil nutrition; Available nutrition; Organic matter; Typical forest
分类号:
S718.5
DOI:
10.3969/j.issn.1001-7380.2023.02.003
文献标志码:
A
摘要:
为了探讨土壤理化性质对优势树种根系生物量的影响，以紫金山南坡马尾松枫香混交林（Pinus massoniana×Liquidamabar formosana, PL）和枫香林（Liquidamabar formosana, LF）中马尾松、枫香等优势树种为研究对象，采用平均标准木机械布点土柱取样法获取优势树种根系生物量，分析了各优势树种根系（直径d ≤ 5 mm）生物量的差异，以及典型林分土壤理化性质对优势树种根系生物量的影响。结果表明：（1）在同一典型林分中，达到林分平均胸径的枫香比相似胸径的马尾松具有显著高的表层土（0≤h≤20 cm）细根（d ≤ 2 mm）生物量。（2）枫香在PL中比在LF中具有显著高的0<h≤40 cm土层细根生物量；而马尾松则有相反趋势，即马尾松在LF中比在PL中具有显著高的表层土以及0<h≤40 cm土层的小根（2 mm ≤ d ≤ 5 mm）和根系生物量。（3）土壤pH值、土壤含水率、土壤全磷、全钾是影响马尾松、枫香根系生物量的关键因子；典型林分中枫香根系生物量与速效磷显著正相关，马尾松根系生物量则与速效钾显著正相关。（4）马尾松、枫香根系生物量均随土壤深度增加而显著降低。
Abstract:
The effect of soil physio-chemical properties on the root biomass of dominant trees was evaluated. The root biomass (root diameter (d) less than or equal to 5 mm) of dominant trees (i.e., Pinus massoniana and Liquidamabar formosana) were determined using the Specific Sampling Method of averaged standard tree and analyzed under two typical forests, including P. massoniana×L.formosana forest (PL) and L. formosana forest (LF) in Nanjing Zijin Mountain. Effects of soil physio-chemical properties in typical forest on the root biomass of dominant trees were also analyzed. The results showed that: 1) The fine root biomass (d ≤ 2 mm) of L. formosana was higher than that of P. massoniana with similar DBH in surface soil (0＜h≤20 cm) under each typical forest. 2) The fine root biomass of L. formosana at soil depth of 0＜h≤40 cm was higher in PL forest than that in LF forest. However, the biomass of small root (2 mm ≤ d ≤ 5 mm) and all root (fine and small roots) of P. massoniana at soil depths of 0＜h≤20 cm and 0＜h≤40 cm was lower in PL forest than that in LF forest. 3) The pH, moisture content, total phosphorus and potassium were the key factors influencing root biomass of P. massoniana and L. formosana in Nanjing Zijin Mountain. Moreover, the root biomass of L. formosana was significantly and positively correlated with available phosphorus. The root biomass of P. massoniana was significantly and positively correlated with available potassium. 4) The root biomass of P. massoniana and L. formosana decreased with the increase of soil depth.

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备注/Memo

备注/Memo:
收稿日期：2023-02-04;修回日期：2023-02-28
基金项目：国家自然科学基金项目“间伐影响人工林细根动态的根际环境调控机制”（31971453）;江苏省林业科技创新与推广项目“古树名木健康诊断及保护复壮技术研究与集成”（LYKJ[2021]27）
作者简介：马骧（1983- ），男，江苏常州人，高级工程师。主要从事森林经营与管理。E-mail:20771251@qq.com
*通信作者：徐丽丽（1991- ），女，浙江台州人，硕士。主要研究方向：森林保护学。E-mail:jiangfeimeng@126.com;Tel:13913905746
更新日期/Last Update: 2023-07-07