文献类型：期刊文献

中文题名：基于生长过程的海南桉树纸浆林土壤理化性质和植物多样性分析

英文题名：Analysis of soil physiochemical properties and understory plant diversity based on growth process of Eucalyptus pulp plantation in Hainan

作者：张沛健[1,2,3] 徐建民[1] 卢万鸿[3] 林志锋[4] 尚秀华[3]

第一作者：张沛健

机构：[1]中国林业科学研究院热带林业研究所,广东广州510520;[2]南京林业大学,江苏南京210037;[3]国家林业和草原局桉树研究开发中心,广东湛江524022;[4]海南金华林业有限公司,海南儋州578101

年份：2021

卷号：41

期号：5

起止页码：82-92

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：“十三五”国家重点研发计划项目子任务(2016YFD0600503-2)。

语种：中文

中文关键词：海南;尾细桉;生长;土壤理化性质;植物多样性

外文关键词：Hainan;E.urophylla×E.tereticornis;growth;soil physiochemical properties;plant diversity

分类号：S792.39

摘要：【目的】研究海南不同龄组桉树纸浆林的生长状况、土壤理化性质和林下植物多样性的变化及相关性,探索其在桉树生长不同阶段的动态变化趋势及其规律,旨在为桉树纸浆林可持续经营提供理论依据。【方法】选择6个不同龄组尾细桉人工林的70个标准样地和分布其中的灌草样方进行调查取样,通过方差和多重比较分析不同龄组的生长指标、土壤因子和多样性指数之间的差异,采用相关性分析了解它们之间的关联。【结果】随着尾细桉的生长发育,林木及优势木的树高、胸径和材积均呈增加趋势,其中中龄林和近熟林的增幅较大,不同龄组的土壤理化性质和林下植物多样性指标差异性显著。灌木植物丰富度指数整体呈增加趋势,草本植物整体呈减少趋势,除成熟林外,草本植物丰富度均多于灌木植物;Simpson和Shannnon-Wiener多样性指数及Pielou均匀度指数均呈先升高后降低再升高的趋势,各指数基本上在近熟林阶段达到最高值。尾细桉林的优势木胸径与土壤理化性质相关性最强,除全氮和全钾外,都达到显著水平;各生长指标与林下草本植物丰富度均呈显著负相关;灌木、草本物种丰富度和多样性指数与土壤容重、孔隙度、全钾、速效钾显著相关。【结论】土壤容重、土壤磷和钾的含量显著影响了尾细桉林木的生长和林下植物多样性,草本植物与林木生长竞争明显,经营中应注意磷肥和钾肥的施用,做好除草抚育,通过适当延长轮伐期,可维持桉树林生态群落的稳定性。
【Objective】The purpose of this study was to study the growth status,the soil physiochemical properties,the plant diversity and the correlation among them in different age groups of Eucalyptus pulp plantation in Hainan,and to explore the dynamic change trend and law in different growth stages,in order to provide theoretical basis for sustainable management of Eucalyptus pulp plantation.【Method】70 standard plots were set up in six different age groups of E.urophylla×E.tereticornis plantation.The standard plots and the shrub grass plots distributed in the standard plots were investigated and sampled.The differences among growth indexes,soil factors and diversity indexes of different age groups were analyzed by variance and multiple comparison,and the correlation between them was analyzed by correlation analysis.【Result】With the growth and development of E.urophylla×E.tereticornis,the height,diameter at breast height and volume of trees and dominant trees showed an increasing trend,among which the growth of middle-aged forest and near mature forest increased greatly.There were significant differences in soil physiochemical properties and understory plant diversity index among different age groups.With the growth and development,the richness index of the shrub layer showed an increasing trend,while the herb layer showed a decreasing trend.Except for mature forest,the richness of herbaceous plants was higher than that of shrubs.The Simpson diversity index,Shannnon-Wiener diversity index and Pielou evenness index all showed a trend of first increasing,then decreasing and then increasing,and each index basically reached the highest value in the near-mature stage.The diameter at breast height of dominant trees in E.urophylla×E.tereticornis forest had the strongest correlation with soil physiochemical properties,reaching a significant level except for total nitrogen and potassium.The growth indexes of E.urophylla×E.tereticornis forest were significantly negatively correlated with the richness of herbaceous plants,and the richness and diversity index of shrubs and herbs were significantly correlated with soil bulk density,porosity,total potassium content and available potassium content.【Conclusion】Soil bulk density,soil phosphorus and potassium content significantly affected the growth of E.urophylla×E.tereticornis and the diversity of understory plants.The competition between herbaceous plants and trees was obvious.In the management,attention should be paid to the application of phosphorus and potassium fertilizer,and weeding and tending should be done well.The stability of Eucalyptus forest ecological community can be maintained by appropriately extending the rotation period.