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黄君祥,房芳,黄勇杰,周晓果,周雪梦,蒋爱伍.引入乡土树种混交对桉树人工林土壤螨类多样性及群落结构的影响[J].广西科学,2026,33(3):643-655. [点击复制]
- HUANG Junxiang,FANG Fang,HUANG Yongjie,ZHOU Xiaoguo,ZHOU Xuemeng,JIANG Aiwu.Effects of Introducing Native Tree Species on Soil Mite Diversity and Community Structure in Eucalyptus Plantations[J].Guangxi Sciences,2026,33(3):643-655. [点击复制]
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| 引入乡土树种混交对桉树人工林土壤螨类多样性及群落结构的影响 |
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黄君祥1, 房芳1, 黄勇杰2, 周晓果2,3, 周雪梦2, 蒋爱伍1
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| (1.广西大学林学院, 广西南宁 530004;2.广西科学院生态环境研究所, 广西南宁 530007;3.崇左凭祥友谊关森林生态系统广西野外科学观测研究站, 广西凭祥 532600) |
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| 摘要: |
| 为探究引入乡土树种与桉树(Eucalyptus)混交对桉树人工林生态功能的影响，本研究以土壤螨类为指示物种，以尾巨桉(Eucalyptus urophylla×grandis)纯林(PE)、尾巨桉×红锥(Castanopsis hystrix)混交林(MEC)、尾巨桉×降香黄檀(Dalbergia odorifera)混交林(MED)、尾巨桉×望天树(Parashorea chinensis)混交林(MEP)为研究对象，以基地内保留的次生林过渡带作为自然参照组(CK)，探究引入乡土树种混交对桉树人工林土壤螨类多样性和群落结构的影响。结果显示，本研究共鉴定出有效土壤螨类标本4 581只，隶属52科82属，其中，裂甲螨属(Meristacarus)为优势属。引入乡土树种混交影响了桉树人工林土壤螨类多样性和生态功能。其中，MEC土壤螨类表现出最高的多样性(Shannon-Wiener多样性指数H=4.39)和丰富度(Margalef丰富度指数RS=6.88)，与CK最相似(H=4.28,RS=6.76)，显著高于PE (H=3.85,RS=6.20，P＜0.05)。群落相似性分析结果显示，各林分类型土壤螨类均为中等相似。引入乡土固氮树种降香黄檀混交则显著增加了土壤螨类功能性状复杂性，其中MED土壤螨类的取食偏好与PE、MEC、MEP存在极显著差异(P＜0.01)，表皮骨化程度与CK的最相似(P＜0.05)，且显著低于MEC、MEP(P＜0.05)。成熟度指数(MI)分析结果显示，各林分类型捕食性革螨(Mesostigmata:Gamasina)均为K选择型。生态类群分析结果显示，各林分类型甲螨(Oribatida)个体数均为M型，属数均为O型。综上，引入乡土树种混交虽并未显著改变桉树人工林土壤螨类群落结构，但红锥与尾巨桉混交有效提升了土壤螨类多样性，降香黄檀与尾巨桉混交显著提升了土壤螨类功能性状复杂性，望天树与尾巨桉混交则表现欠佳。 |
| 关键词: 土壤螨类 土壤动物 人工林 乡土树种 桉树 混交林 |
| DOI：10.13656/j.cnki.gxkx.20260617.001 |
| 投稿时间：2025-11-28修订日期：2026-01-14 |
| 基金项目:广西自然科学基金项目(2024GXNSFBA010328)和国家自然科学基金项目(32560283)资助。 |
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| Effects of Introducing Native Tree Species on Soil Mite Diversity and Community Structure in Eucalyptus Plantations |
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HUANG Junxiang1, FANG Fang1, HUANG Yongjie2, ZHOU Xiaoguo2,3, ZHOU Xuemeng2, JIANG Aiwu1
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| (1.School of Forestry, Guangxi University, Nanning, Guangxi, 530004, China;2.Institute of Eco-Environment Research, Guangxi Academy of Sciences, Nanning, Guangxi, 530007, China;3.Youyiguan Forest Ecosystem Observation and Research Station of Guangxi, Pingxiang, Guangxi, 532600, China) |
| Abstract: |
| To explore the effects of introducing native tree species on the ecological functions of Eucalyptus plantations,this study used soil mites as indicator species and conducted research in Eucalyptus urophylla×grandis pure forest (PE),E.urophylla×grandis with Castanopsis hystrix mixed forest (MEC),E.urophylla×grandis with Dalbergia odorifera mixed forest (MED),and E.urophylla×grandis with Parashorea chinensis mixed forest (MEP).The secondary forest in the study area was taken as the control (CK).The soil mite diversity and community structure were compared among different forest stands.The results showed that a total of 4 581 soil mite individuals were identified,belonging to 82 genera of 52 families,among which Meristacarus was the dominant genus.The introduction of native tree species for mixed planting affected the soil mite diversity and ecological functions of Eucalyptus plantations.Among all the stand type,MEC had the highest soil mite diversity and richness (Shannon-Wiener diversity index,H=4.39;Margalef richness index,RS=6.88),which was similar to those of CK (H=4.28,RS=6.76) and higher than that of PE (H=3.85,RS=6.20,P＜0.05).Community Jaccard analysis indicated that the soil mite communities among different stand types were moderate similar.The introduction of D.odorifera significantly increased the complexity of soil mite functional traits.The soil mites in MED showed different feeding preference from those in PE,MEC and MEP (P<0.01),and the sclerotization level similar to those in CK (P<0.05) and lower than those in MEC and MEP (P<0.05).The mature index analysis showed that K selected species dominated among Mesostigmata:Gamasina in all stand types.The analysis of ecological groups revealed that the number of individuals of oribatid mites in all stand types belonged to the M-type,and the number of genera belonged to the O-type.In conclusion,although the introduction of native tree species for mixed planting does not significantly change the soil mite community structure of Eucalyptus plantations,the MEC effectively improves soil mite diversity,and MED significantly enhances the complexity of soil mite functional traits.However,the MEP shows poor performance. |
| Key words: soil mites soil fauna plantation native tree species Eucalyptus mixed plantations |
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