文献类型：期刊文献

中文题名：石漠化区人工植被模式对生物多样性和土壤理化性质的影响

英文题名：Effects of artificial vegetation modes on biodiversity and soil physicochemical properties in rocky desertification areas

作者：张梅[1,2] 陈泠澜[1] 赵紫晴[3] 王藜颖[2] 刘玉国[3] 丁玉雄[2] 刘发万[4] 周金星[1] 万龙[1] 普文富[2] 张黄俊[5]

第一作者：张梅

机构：[1]北京林业大学水土保持学院,云南建水荒漠生态系统国家定位观测研究站,北京100083;[2]建水县林业和草原科技推广站,建水654399;[3]中国林业科学研究院生态保护与修复研究所,北京100091;[4]建水县国有林场,建水654399;[5]建水县退耕还林工作领导小组办公室,建水654399

年份：2025

卷号：45

期号：13

起止页码：6269-6278

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(42371066,31700640);国家重点研发计划课题(2022YFF1302901,2016YFC0502504)。

语种：中文

中文关键词：植被恢复;生物多样性;土壤理化性质;化学计量比;喀斯特断陷盆地

外文关键词：vegetation restoration;biodiversity;physical and chemical materials of soil;stoichiometry;karst graben basin area

分类号：S718.5

摘要：喀斯特断陷盆地区地处滇东-攀西一带,严重的石漠化问题导致生态环境脆弱,成为当前急需解决的生态挑战。而植被恢复是石漠化地区综合治理的重要途径,因此,聚焦于云南省建水县石漠化区,以4种不同的人工植被模式(阔叶林、针叶林、针阔混交林、灌木林)以及草地对照作为研究对象,通过植被群落和土壤调查,深入探究了不同人工植被模式对生物多样性、土壤理化性质以及化学计量特征的影响。研究结果显示,在不同的人工植被模式下,共计调查到39种被子植物,分属于21科35属。相较于灌木林和草地,阔叶林、针叶林和针阔混交林的物种丰富度显著提高,主要体现在草本植物物种的显著增加(P<0.05)。人工植被模式有助于提升石漠化区植物群落的生物多样性,其中以阔叶林模式的乔木生物多样性最高,灌木林生物多样性以阔叶林模式和针叶林模式为最高,而草本植物多样性以针阔混交林模式为较高。此外,灌木林的土壤全氮(TN)和全磷(TP)含量均低于乔木林,灌木林的植被恢复对土壤养分没有显著影响(P>0.05),且对土壤TP含量有不利影响。经过4年的乔木林人工植被恢复,土壤有机质的变化显著,阔叶林的土壤有机质含量显著高于其他模式(P<0.05),针阔混交林则显著提升了土壤TN含量(P<0.05),而阔叶林则显著提升了土壤TP含量(P<0.05)。在阔叶林、针叶林和针阔混交林中,C/N化学计量比有所降低,而C/P在针阔混交林模式下则有所下降,这有利于微生物的分解过程。研究为石漠化区的植被恢复提供了重要的参考,为喀斯特地区的生态恢复与石漠化治理提供了对策与建议。
Situated in the eastern Yunnan-Panxi belt,the karstic graben basin area is confronted with an acutely fragile ecological environment as a consequence of severe rocky desertification,emerging as an ecological challenge that demands immediate resolution.Vegetation restoration is a crucial measure for the comprehensive management of rocky desertification regions.This research centers on the rocky desertification zone in Jianshui County,Yunnan Province.Four distinct artificial vegetation models,namely broadleaf forest,coniferous forest,mixed coniferous-broadleaf forest,and shrubland,along with a natural grassland serving as a control,are taken as the research subjects.Through comprehensive vegetation community surveys and in-depth soil investigations,this study delves into the impacts of these different artificial vegetation models on biodiversity,soil physicochemical properties,and stoichiometric characteristics.The findings reveal that,across the various artificial vegetation models,a total of 39 angiosperm species,classified into 21 families and 35 genera,were identified.In comparison to shrublands and grasslands,broadleaf forests,coniferous forests,and mixed coniferous-broadleaf forests manifested a notably higher species richness.This increase was mainly embodied in the significant augmentation of herbaceous plant species(P<0.05).The artificial vegetation models effectively contribute to the enhancement of plant community biodiversity in the rocky desertification area.Specifically,the broadleaf forest model demonstrated the highest tree biodiversity.For shrubland biodiversity,the broadleaf forest and coniferous forest models ranked the highest,while the mixed coniferous-broadleaf forest model presented relatively higher herbaceous plant diversity.Regarding soil properties,the soil total nitrogen(TN)and total phosphorus(TP)contents in shrublands were lower than those in arbor-dominated forests.The vegetation restoration in shrublands exerted no significant influence on soil nutrients(P>0.05)and even had an adverse effect on soil TP content.After four years of arbor forest artificial vegetation restoration,significant changes occurred in soil organic matter.The soil organic matter content in broadleaf forests was remarkably higher than that in other models(P<0.05).The mixed coniferous-broadleaf forests significantly increased the soil TN content(P<0.05),and broadleaf forests significantly elevated the soil TP content(P<0.05).Moreover,in broadleaf,coniferous,and mixed coniferous-broadleaf forests,the C/N stoichiometric ratio decreased.In the mixed coniferous-broadleaf forest model,the C/P ratio declined as well,which was conducive to the microbial decomposition process.In conclusion,this study offers valuable insights for the vegetation restoration in rocky desertification areas and provides practical countermeasures and suggestions for ecological restoration and rocky desertification management in karst regions.It emphasizes the significance of choosing appropriate artificial vegetation models to promote ecological recovery and sustainable development in these ecologically vulnerable areas.