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[1]刘 政 田 地 黄梓敬 傅仲豪 刘 骏 胡亚林**.南方红壤侵蚀区不同恢复年限马尾松人工林土壤和叶片N、P养分含量及生态化学计量特征*[J].应用与环境生物学报,2019,25(04):1-16.[doi:10.19675/j.cnki.1006-687x.2018.10022]
 LIU Zheng,TIAN Di,HUANG Zijing,et al.Characteristics of soil and foliar N, P concentrations and stoichiometric ratio along restoration ages of Pinus massoniana plantations in red soils erosion regions at southern China[J].Chinese Journal of Applied & Environmental Biology,2019,25(04):1-16.[doi:10.19675/j.cnki.1006-687x.2018.10022]
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南方红壤侵蚀区不同恢复年限马尾松人工林土壤和叶片N、P养分含量及生态化学计量特征*()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
25卷
期数:
2019年04期
页码:
1-16
栏目:
研究论文
出版日期:
2019-07-30

文章信息/Info

Title:
Characteristics of soil and foliar N, P concentrations and stoichiometric ratio along restoration ages of Pinus massoniana plantations in red soils erosion regions at southern China
文章编号:
201810022
作者:
刘 政 田 地 黄梓敬 傅仲豪 刘 骏 胡亚林**
福建农林大学林学院森林生态-稳定同位素研究中心 福州 350002
Author(s):
LIU Zheng TIAN Di HUANG Zijing FU Zhonghao LIU Jun & HU Ya lin**
Forest Ecology and Stable Isotope Centre, Forestry College, Fujian Agriculture and Forestry University, FuZhou 350002, China
关键词:
红壤侵蚀区植被恢复 土壤养分限制生态化学计量比马尾松人工林
Keywords:
red soil erosion region vegetation restoration soil nutrient limit stoichiometric ratio Masson pine plantation
DOI:
10.19675/j.cnki.1006-687x.2018.10022
摘要:
植被恢复是我国水土侵蚀地区治理的重要措施。南方红壤丘陵区是我国第二大水土流失区,但针对该地区植被恢复过程中土壤氮(N)和磷(P)养分动态研究依然不足,尤其关于1 m深土壤N和P养分特征未见报道。因此,本研究以南方红壤严重水土侵蚀区不同植被恢复年限林地(裸地、10年、20年、30年生马尾松人工林和天然次生林)为研究对象,比较植物叶片和1 m深度土壤N和P含量及生态化学计量比特征。结果显示:随着马尾松人工林恢复年限增加,0-10 cm土壤N含量显著提高,但深层(>10 cm)土壤N含量并无显著差异,与地带性天然次生林相比,马尾松人工林各土层土壤N含量依然显著偏低;随着恢复年限增加,马尾松人工林各层土壤全P含量未显著提高,且裸地、10年、20年生马尾松人工林和天然次生林各土层土壤全P含量差异不显著;随着恢复年限增加,植物叶片N和P含量呈现出增加趋势,其中与未经治理的裸地相比,30年生马尾松人工林叶片N和P含量分别增加42.26%和27.17%,且植物叶片N和P含量与各层土壤N和P养分存在显著正相关关系。本研究表明,南方红壤严重土壤侵蚀区土壤N和P养分对植被林恢复的响应存在差异;与土壤P养分相比,土壤N养分能够不断增加。今后为更好促进红壤水土侵蚀区植被恢复应辅以施加磷肥措施,并促进单一马尾松人工林转变为地带性天然次生林植被。
Abstract:
Vegetation restoration is one of the most important practices to control soil erosion. Red soil regions as the secondly large erosion region in China, however the impacts of vegetation restoration on the dynamics of soil nitrogen(N)and phosphorus(P)nutrients at 1-m depth are not yet well studied. In this study we evaluated soil and foliar N and P concentrations and its stoichiometric ratios in bare land, and 10-, 20- and 30-year old Masson pine (Pinus massoniana Lamb.) plantations, and natural secondary forest in the eroded red soils at southern China. Our results showed that soil N concentration at 0-10cm increased significantly with increasing stand age of Masson pine plantations, but not for deep (>10 cm) soils. Soil N concentrations over 1 m depth were still lower in 30-year old Masson pine plantation compared to natural secondary forest. Soil P concentration were not yet increased after vegetation restoration of Masson pine plantations. Moreover, there were no differences of soil P concentrations along soil layers in bare land, 10- and 20-year old plantations and natural secondary forest. There was a gradual increase trend of foliar N and P concentration after vegetation restoration, and foliar N and P concentrations increased by 42.26% and 27.17% in 30-year old plantations compared to bare land. Foliar N and P were positively related to soil N and P nutrients, respectively. Our results indicated that there were different responses of soil N and P nutrients following vegetation restoration in the red soil erosion regions, and soil P nutrient became more limit with the gradual increase of soil N nutrient. In future we could apply phosphorus fertilizer to relieve soil P limit during vegetation restoration, and promote vegetation change from single Masson pine plantations to natural secondary forest.

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备注/Memo

备注/Memo:
收稿日期:2018-10-25 接受日期 Accepted: 2018-11-08*福建省科技计划对外合作项目(201710001)、土壤与农业可持续发展国家重点实验室开放基金课题(Y20160022)、福建省高等学校新世纪优秀人才支持计划(KLa16056A)资助 **通讯作者(E-mail: huyl@iae.ac.cn)点击摘要页题目后的“PDF”可下载阅读全文;本文为已录用的作者修定稿,尚未经编辑全面修改。引用本文请注明出处本刊;发表刊期和页码将以正式出版时的安排为准,但DOI确定不变。
更新日期/Last Update: 2018-12-28