Yu Manman,Yu Shuiqiang,Shi Shang,et al.Impact of understory vegetation management on composition and stability of soil aggregates in poplar plantations[J].Research of Soil and Water Conservation,2025,32(05):183-190.[doi:10.13869/j.cnki.rswc.2025.05.035]
林下植被管理对杨树人工林土壤团聚体组成及稳定性的影响
- Title:
- Impact of understory vegetation management on composition and stability of soil aggregates in poplar plantations
- 文章编号:
- 1005-3409（2025）05-0183-08
- Keywords:
- soil aggregate distribution; soil aggregate stability; understory vegetation management; soil properties
- 分类号:
- S714.2
- 文献标志码:
- A
- 摘要:
- [目的] 研究不同林下植被管理策略对土壤理化性质、团聚体组成及其稳定性的影响，为提升杨树人工林的土壤质量和增强森林土壤的固碳能力提供科学依据。[方法] 以苏北地区的杨树人工林为研究对象，设置4种林下植被处理，即保留自然植被（B）、保留单一植被（D）、种植固氮植物（N）和清除林下植被（Q），探讨不同林下植被管理模式下土壤性质、土壤团聚体组成及其稳定性的变化。[结果] N处理能显著提高上层土壤有机碳（SOC）、有效磷（AP）、无定形态氧化铁（Feo）和络合态氧化铁（Fep）含量，保持较高的速效氮含量，而Q处理则显著降低上层土壤水分（SWC）、SOC、铵态氮（NH+4-N）、硝态氮（NO3 - -N）以及下层NO3 - -N和游离态氧化铁（Fed）含量。上层土壤团聚体以大团聚体（>2 mm），下层以小团聚体（0.25~2 mm）为主；与Ｂ处理相比，D、N、Q处理显著降低了大团聚体比例并增加了小团聚体所占比例，其中Q处理变化最为明显，且微观团聚体（<0.25 mm）比例也显著增加。在团聚体稳定性方面，Q处理的平均重量直径（MWD）和几何平均直径（GMD）最低，团聚体破坏率（PAD）最高，表明其土壤团聚体稳定性最差。SWC、SOC、pH、NH+4 -N、NO3 - -N、AP、Feｏ和Fep是显著影响土壤团聚体组成或稳定性的关键因素。[结论] N处理可以提升SOC和土壤养分含量，且土壤团聚体稳定性中等；而Q处理通常降低土壤SWC、SOC和养分含量，且团聚体结构最不稳定；B处理的土壤团聚体稳定最高，破坏率最低。总体而言，B处理和N处理有利于提高杨树人工林的土壤质量和团聚体稳定性。
- Abstract:
- [Objective] The effects of different understory vegetation management practices on soil physicochemical properties, aggregate composition, and stability are investigated to provide a scientific basis for improving soil quality and enhancing the carbon sequestration capacity of forest soils in poplar plantations. [Methods] Poplar plantations in northern Jiangsu were studied, and four understory vegetation treatments were applied. Treatments included natural vegetation retention(B), single-species vegetation retention(D), planting nitrogen-fixing plants (N), and understory vegetation removal(Q). Changes in soil properties, aggregate composition, and stability under these management patterns were explored. [Results] Treatment N significantly increased the content of soil organic carbon (SOC), available phosphorus (AP), amorphous iron oxide (Feo), and complexed iron oxide (Fep) in the upper soil layer, while maintaining high available nitrogen content. In contrast, Treatment Q significantly reduced soil water content (SWC), SOC, ammonium nitrogen (NH+4 -N), nitrate nitrogen(NO3 --N) in the upper layer, and the NO3 --N and free iron oxide (Fed) in the lower layer. Macroaggregates(>2 mm) dominated in the upper soil layer, whereas small aggregates(0.25~2 mm) were predominant in the lower layer. Compared to Treatment B, Treatments D, N, and Q significantly reduced the proportion of macroaggregates and increased the proportion of small aggregates, with Treatment Q showing the most pronounced changes and a significant increase in the proportion of microaggregates(<0.25 mm). Regarding aggregate stability, Treatment Q had the lowest mean weight diameter(MWD) and geometric mean diameter(GMD), and the highest percentage of aggregates destroyed(PAD), indicating the poorest stability. The SWC, AP, SOC, NO3 --N, NH+4-N, pH, Feo, and Fep were identified as key factors significantly affecting soil aggregate composition and stability. [Conclusion] Treatment N can improve SOC, soil nutrient contents, with soil aggregate stability at a moderate level. Treatment Q generally reduces SWC, SOC, and soil nutrient contents, and has the most unstable aggregate structure. Treatment B demonstrates the highest stability and lowest destruction rate. Overall, Treatment B and N are conducive to improving soil quality and aggregate stability in poplar plantations.
参考文献/References:
[1]刘鸿宇. 泡桐人工林土壤团聚体稳定性及其影响因素研究[D]. 长沙：中南林业科技大学，2020. Liu H Y. Study on the stability of soil aggregates in Paulownia plantation and its influencing factors[D]. Changsha：Central South University of Forestry & Technology，2020.
[2]潘嘉琛，刘超，董智，等. 黄泛沙地不同林龄杨树人工林土壤团聚体及有机碳特征[J]. 水土保持研究，2022，29（3）：25-30，37. Pan J C，Liu C，Dong Z，et al. Distribution characteristics of soil aggregates and soil organic carbon in Populus artificial forest with different forest ages in Yellow River flood plain[J]. Research of Soil and Water Conservation，2022，29（3）：25-30，37.
[3]张贾宇，佘婷，鄂晓伟，等. 杨树人工林幼林阶段林下植被管理对土壤微生物生物量碳、氮酶活性的影响[J]. 生态学报，2021，41（24）：9898-9909. Zhang J Y，She T，E X W，et al. Effects of understory vegetation management on soil microbial biomass carbon and nitrogen and extracellular enzyme activities in the early stages of poplar plantation[J]. Acta Ecologica Sinica，2021，41（24）：9898-9909.
[4]Zhao J，Wan S Z，Li Z A，et al. Dicranopteris-dominated understory as major driver of intensive forest ecosystem in humid subtropical and tropical region[J]. Soil Biology and Biochemistry，2012，49：78-87.
[5]李玮，郑子成，李廷轩，等. 不同植茶年限土壤团聚体及其有机碳分布特征[J]. 生态学报，2014，34（21）：6326-6336. Li W，Zheng Z C，Li T X，et al. Distribution characteristics of soil aggregates and its organic carbon in different tea plantation age[J]. Acta Ecologica Sinica，2014，34（21）：6326-6336.
[6]甘安琪，姜佳昌，李霞，等. 放牧强度对高寒草地土壤团聚体稳定性及有机碳含量影响[J]. 草地学报，2024，32（6）：1832-1842. Gan A Q，Jiang J C，Li X，et al. Effects of grazing intensity on soil aggregate stability and its associated organic carbon content in alpine grassland[J]. Acta Agrestia Sinica，2024，32（6）：1832-1842.
[7]李天娇，张乃于，申文艳，等. 长期施肥对黑土和棕壤团聚体稳定性的影响及驱动因素[J]. 中国农业科学，2024，57（19）：3835-3847. Li T J，Zhang N Y，Shen W Y，et al. Effects of longterm fertilization on soil aggregate stability and its driving factors in black soil and brown soil[J]. Scientia Agricultura Sinica，2024，57（19）：3835-3847.
[8]王平，丁智强，李璐杉，等. 滇中主要森林类型土壤团聚体稳定性及其变化机制[J]. 水土保持研究，2024，31（5）：232-242. Wang P，Ding Z Q，Li L S，et al. Stability and mechanisms of soil aggregates in major forest types in central Yunnan[J]. Research of Soil and Water Conservation，2024，31（5）：232-242.
[9]杨江怡. 基于流域监测技术的浊度与泥沙响应及其影响因素[D]. 南宁：广西大学，2023. Yang J Y. Turbidity and sediment response and its influencing factors based on watershed monitoring technology[D]. Nanning：Guangxi University，2023.
[10]Kumar A，Dorodnikov M，Splettst??er T，et al. Effects of maize roots on aggregate stability and enzyme activities in soi[l J]. Geoderma，2017，306：50-57.
[11]刘讯，石燕，姚思雨，等. 贵州脆弱生态区不同龄组马尾松人工林土壤团聚体稳定性与养分含量[J]. 中南林业科技大学学报，2024，44（8）：104-113. Liu X，Shi Y，Yao S Y，et al. Soil aggregate stability and nutrient content of Pinus massoniana plantation at different age groups in fragile ecological area of Guizhou[J]. Journal of Central South University of Forestry & Technology，2024，44（8）：104-113.
[12]何欢，康必均，尹婧，等. 不同营林措施对川东华蓥山杉 木林土壤团聚体稳定性及细根分布的影响[J]. 土壤通报，2024，55（2）：351-359. He H，Kang B J，Yin J，et al. Effects of forest management measurements on soil aggregate stability and fine root distribution of Chinese fir in Huaying Mountains of east Sichuan[J]. Chinese Journal of Soil Science，2024，55（2）：351-359.
[13]葛晓敏，唐罗忠，王瑞华，等. 杨树人工林生态系统凋落 物生物量及其分解特征[J]. 生态环境学报，2017，26（9）：1457-1464. Ge X M，Tang L Z，Wang R H，et al. Litterfall biomass and decomposition characteristics in a poplar plantation ecosystem[J]. Ecology and Environmental Sciences，2017，26（9）：1457-1464.
[14]张贾宇，徐叶宁，陶慧颖，等. 杨-桤短期混交的林地土壤养分异质性[J]. 生态环境学报，2018，27（2）：216-223. Zhang J Y，Xu Y N，Tao H Y，et al. Short-term effects on the heterogeneity of soil nutrients in mixed poplar-alder plantation[J]. Ecology and Environmental Sciences，2018，27（2）：216-223.
[15]杨洪炳，肖以华，许涵，等. 城乡梯度下不同林分类型土壤团聚体分布及其稳定性[J]. 林业科学研究，2022，35（3）：82-92. Yang H B，Xiao Y H，Xu H，et al. Distribution and stability of soil aggregates in different forest types under an urban-rural gradient[J]. Forest Research，2022，35（3）：82-92.
[16]刘仁，袁小兰，刘俏，等. 林下植被去除对杉木人工林土壤酶活性及其化学计量比的影响[J]. 林业科学研究，2020，33（5）：121-128. Liu R，Yuan X L，Liu Q，et al. Effects of understory vegetation removal on soil hydrolytic enzyme activity and stoichiometric ratio of Chinese fir plantation[J]. Forest Research，2020，33（5）：121-128.
[17]韦建杏，陈海辉，农寿千，等. 海南中部丘陵区3种人工林林下植物物种多样性及其与土壤养分的关系[J]. 南方农业学报，2023，54（12）：3641-3649. Wei J X，Chen H H，Nong S Q，et al. Species diversity of understory plants and its relationship with soil nutrients in three plantations in the hilly area of central Hainan[J]. Journal of Southern Agriculture，2023，54（12）：3641-3649.
[18]张文，李佳君，向明珠，等. 固氮树种马占相思对巨尾桉人工林土壤团聚体粒径分布及稳定性的影响[J]. 广西植物，2024，44（7）：1245-1256. Zhang W，Li J J，Xiang M Z，et al. Effects of nitrogenfixing tree species Acacia mangium on particle size distribution and stability of soil aggregates in Eucalyptus grandis×urophylla plantations[J]. Guihaia，2024，44（7）：1245-1256.
[19]张贾宇. 林下植被对杨树人工林生长与氮素供应的影响[D]. 南京：南京林业大学，2021. Zhang J Y. Effects of understory vegetation on the growth and nitrogen supply of poplar plantations[D]. Nanjing：Nanjing Forestry University，2021.
[20]Ye X D，Luan J W，Wang H，et al. Tree species richness and N-fixing tree species enhance the chemical stability of soil organic carbon in subtropical plantations[J]. Soil Biology and Biochemistry，2022，174：108828.
[21]陈红，马文明，周青平，等. 高寒草地灌丛化对土壤团聚体稳定性及其铁铝氧化物分异的研究[J]. 草业学报，2020，29（9）：73-84. Chen H，Ma W M，Zhou Q P，et al. Shrub encroachment effects on the stability of soil aggregates and the differentiation of Fe and Al oxides in Qinghai-Tibet alpine grassland[J]. Acta Prataculturae Sinica，2020，29（9）：73-84.
[22]Pu Y L，Lang S X，Wang A B，et al. Distribution and functional groups of soil aggregate-associated organic carbon along a marsh degradation gradient on the Zoige Plateau，China[J]. Catena，2022，209：105811.
[23]Zhou M，Liu C Z，Wang J，et al. Soil aggregates stability and storage of soil organic carbon respond to cropping systems on Black Soils of Northeast China[J]. Scientific Reports，2020，10（1）：265.
[24]李冰，庞丹波，陈林，等. 贺兰山不同海拔土壤团聚体有机碳稳定性[J]. 生态学报，2024，44（24）：11241-11253. Li B，Pang D B，Chen L，et al. Stability of organic carbon in soil aggregates at different elevations in Helan Mountain[J]. Acta Ecologica Sinica，2024，44（24）：11241-11253.
[25]Li J W，Zhong S Q，Han Z，et al. The relative contributions of soil hydrophilicity and raindrop impact to soil aggregate breakdown for a series of textured soils[J]. International Soil and Water Conservation Research，2022，10（3）：433-444.
[26]Caron J，Espindola C R，Angers D A. Soil structural stability during rapid wetting：influence of land use on some aggregate properties[J]. Soil Science Society of America Journal，1996，60（3）：901-908.
[27]都江雪. 施磷对土壤团聚体中有机碳分布的影响机制[D]. 北京：中国农业科学院，2022. Du J X. The mechanism of phosphorus addition affecting on organic carbon distribution in soil aggregates[D]. Beijing：Chinese Academy of Agricultural Sciences，2022.
[28]Igwe C A，Zarei M，Stahr K. Colloidal stability in some tropical soils of southeastern Nigeria as affected by iron and aluminium oxides[J]. Catena，2009，77（3）：232-237.
[29]付庆灵，邓雅丽，胡红青，等. 南方主要土壤中铁铝氧化物对土壤吸附Bt蛋白的影响[J]. 中国农业科学，2012，45（23）：4836-4843. Fu Q L，Deng Y L，Hu H Q，et al. Effects of Fe and Al oxides on adsorption of Bt toxin by several soils in South of China[J]. Scientia Agricultura Sinica，2012，45（23）：4836-4843.
[30]Xue B，Huang L，Huang Y N，et al. Roles of soil organic carbon and iron oxides on aggregate formation and stability in two paddy soils[J]. Soil and Tillage Research，2019，187：161-171.
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备注/Memo
收稿日期：2024-11-20 修回日期：2024-12-16 接受日期：2024-12-22
资助项目：科技部国家“十四五”重点研发计划子课题（2021YFD220040203）
第一作者：喻曼曼（2000—），女，河南周口人，在读硕士，研究方向：森林生态学。E-mail：ymm1613153292@163.com
通信作者：于水强（1977—），男，辽宁大连人，副教授，研究方向为森林生态学。E-mail：yusq@njfu.edu.cn