文献类型：期刊文献

中文题名：生物质炭施用量对毛竹林土壤团聚体有机碳含量的影响

英文题名：Effects of Biochar Addition on Organic Carbon in Aggregates of Soil under Phyllostachys edulis Forest

作者：郑楚[1,2,3] 陆尤尤[4] 葛晓改[2,3] 何杨辉[1] 周军刚[5] 王小明[2] 周本智[2,3]

第一作者：郑楚

机构：[1]东北林业大学,黑龙江哈尔滨150006;[2]中国林业科学研究院亚热带林业研究所,浙江杭州314000;[3]国家林业局钱江源森林生态系统定位观测研究站,浙江杭州314000;[4]浙江省公益林和国有林场管理总站,浙江杭州310009;[5]杭州市富阳区农业农村局,浙江杭州311400

年份：2025

卷号：56

期号：2

起止页码：439-447

中文期刊名：土壤通报

外文期刊名：Chinese Journal of Soil Science

收录：;北大核心:【北大核心2023】；

基金：浙江省科学技术厅领雁计划项目(2023C02035);十四五国家重点研发子课题(2021YFD220040205)。

语种：中文

中文关键词：生物质炭;毛竹;土壤团聚体有机碳;土壤理化性质

外文关键词：Biochar;Phyllostachys edulis;Organic carbon in soil aggregate;Soil physicochemical property

分类号：S714.6

摘要：【目的】通过探究不同生物质炭施用量对毛竹林土壤团聚体有机碳含量的影响,为毛竹林土壤固碳和可持续发展提供参考。【方法】在毛竹(Phyllostachys edulis)林中设置了不同生物质炭施用量处理,即对照(CK,0 t hm^(-2))、低生物质炭施用(LB,5 t hm^(-2))、中生物质炭施用(MB,10 t hm^(-2))、高生物质炭施用(HB,20 t hm^(-2)),测定一年后4种处理下土壤理化性质和不同粒级团聚体中有机碳含量。【结果】LB、MB和HB较CK显著增加10~20 cm土壤容重数量为17.4%~22.1%,降低通气度、非毛管孔隙度和最大持水量范围为21.3%~22.8%、20.5%~42.2%和20.1%~24.5%。同时,LB和HB显著降低两土层土壤总磷含量13.6%、10.8%和16.1%、10.5%。MB较CK显著增加0~10 cm土层>2000μm团聚体有机碳含量为21.5%,HB较MB显著增加10~20 cm土层53~250μm和250~2000μm团聚体有机碳含量为24.1%和43.0%。生物质炭施用量、土壤团聚体粒级和不同土层深度对土壤团聚体有机碳含量有显著影响,仅生物质炭与土层间交互作用显著。冗余分析显示施用生物质炭增强>2000μm团聚体与土壤有机碳、土壤微生物量氮、土壤全氮之间正相关关系,LB、MB使土壤团聚体结构与土壤容重呈负相关。【结论】10~20 t hm^(-2)的生物质炭施用量能显著提高毛竹林土壤团聚体有机碳含量,提高毛竹林土壤增汇潜力。
[Objective]The aims were to explore the effects of different application rates of biochar on organic carbon content in aggregates of soil uner Phyllostachys edulis forest,which would provide a reference for the sustainable development of soil carbon sequestration.[Method]Four biochar addition treatments(control:CK,0 t ha-2;low biochar:LB,5 t hm^(-2);medium biochar:MB,10 t hm^(-2);high biochar:HB,20 t hm^(-2))were set with the determination of soil physicochemical properties and the organic carbon content in different size of aggregates.[Result]Compared with the control,biochar addition significantly increased 10-20 cm soil bulk density by 17.4%-22.1%,capillary porosity by 21.3%-22.8%,non-capillary porosity by 20.5%-42.2%and maximum water holding capacity by 20.1%-24.5%(P<0.05).LB and HB significantly reduced the total phosphorus contents of 0-10 cm and 10-20 cm soils by 13.6%,10.8%,and 16.1%,10.5%(P<0.05),respectively.In the 0-10 cm soil layer,MB increased the organic carbon content of>2000μm aggregates by 21.5%compared with the control.In the 10~20 cm soil layer,HB increased the organic carbon content of 53-250μm and 250-2000μm aggregates by 24.1%and 43.0%,compared with MB,respectively.With different doses of biochar addition,soil aggregate particle size and different soil depths had significant effects on the organic carbon content of soil aggregates.Only the interaction between biomass charcoal and soil horizons was significant(P<0.05).The redundancy analysis showed that the application of biochar enhanced the positive correlation among>2000μm aggregates and soil organic carbon,soil microbial biomass nitrogen,and total soil nitrogen.LB and MB caused a negative correlation between soil aggregate structure and soil bulk density.[Conclusion]The relative higher biochar application rates(10-20 t hm^(-2))could increase the organic carbon content and stability of soil aggregates,and improve the soil carbon sequestration potential of Phyllostachys edulis forest.