林业科学2023，Vol.59Issue(12)：78-86,9.DOI:10.11707/j.1001-7488.LYKX20220160
雷竹林下养鸡对土壤活性有机碳及碳库管理指数的影响
Effects of Chicken Farming on Soil Active Organic Carbon and Carbon Pool Management Index in the Lei Bamboo(Phyllostachys praecox)Forest
摘要
Abstract
[Objective]This study analyzed the effects of bamboo chicken farming(BCF)on the active organic carbon and carbon pool management index of the topsoil of Phyllostachys praecox forest under different densities.We hope that this study will clarify the extent of disturbance to soil quality and carbon stability of bamboo forest ecosystems by BCF under different densities,and provide a scientific basis for the development of sustainable and eco-friendly under-forest farming strategies.[Method]We characterized the different farming densities by the different distances from the chicken house.And we investigated the differences in the distribution of soil active organic carbon pools and the carbon pool management index under the conditions of 5 m(2.25-2.70 chickens·m-2),15 m(1.05-1.26 chickens·m-2),25 m(0.60-0.72 chickens·m-2),35 m(0.34-0.41 chickens·m-2),and>60 m(CK,pure forest,0 chickens·m-2)from the chicken house.[Result]We found that BCF could effectively promote the accumulation of soil organic carbon(SOC)compared with pure forest,but there was no significant difference in SOC at different farming densities And the active organic carbon fractions such as easily oxidizable organic carbon(EOC),light fraction organic carbon(LFOC),and particulate organic carbon(POC)were found to increase by 43.72%-76.95%,5.55%-47.85%,and 19.59%-43.54%,respectively,in the bamboo forest chicken rearing system.But dissolved organic carbon(DOC)decreased significantly by 6.35%to 19.09%in BCF compared to pure forest.We also found that EOC,LFOC,and POC were significantly and positively correlated with SOC,but DOC was not significantly correlated with SOC in the BCF system.Compared with pure forest,carbon pool activity,activity index,carbon pool index,and carbon pool management index were found to be significantly increased in the BCF system,while the oxidative stability coefficient was significantly decreased.[Conclusion]BCF improved soil carbon pool management indices and soil quality,and significantly altered the distribution of active organic carbon pools in surface soil.And higher farming density may influence litter input and disrupt surface soil structure through frequent disturbances,reducing soil water stability and affecting soil organic carbon accumulation.Moderate resting or rotation at higher farming densities may be the only way to balance the economic and environmental benefits of the current process of farming chickens in bamboo forests.关键词
活性有机碳/碳库管理指数/土壤质量/林下养殖/雷竹Key words
active organic carbon pools/carbon pool management index/soil quality/bamboo chicken farming/Lei bamboo(Phyllostachys praecox)分类
农业科技引用本文复制引用
盖旭,张健,吕衡,黄志远,李巧玲,钟哲科,卞方圆,张小平..雷竹林下养鸡对土壤活性有机碳及碳库管理指数的影响[J].林业科学,2023,59(12):78-86,9.基金项目
中国林业科学研究院基本科研业务费专项(CAFYBB2018ZD002). （CAFYBB2018ZD002）
