水土保持研究2024，Vol.31Issue(2)：27-32,42,7.DOI:10.13869/j.cnki.rswc.2024.02.039
长期氮添加对苏北杨树人工林碳储量的影响
Effects of Long-Term Nitrogen Addition on Carbon Storage of Poplar Plantation in North of Jiangsu
摘要
Abstract
[Objective]In order to further enhance the role of China's poplar plantation in achieving the China's dual carbon goals,the impact of nitrogen addition on the carbon storage allocation pattern of southern poplar plantation was quantitatively analyzed,and theoretical support was provided for the optimization of produc-tion and management mode and technology integration of poplar plantation in the new era of China's dual carbon goals.[Methods]Based on the long-term nitrogen addition plot of poplar plantation in Dongtai Forest Farm,five nitrogen treatments with different concentrations,N0[0 g/(m2·a)],N1[5 g/(m2·a)],N2[10 g/(m2·a)],N3[15 g/(m2·a)],N4[30 g/(m2·a)],were set in random block groups.The effects of long-term nitrogen addition on carbon storage in tree layers,soil layer,litter layer and understory layer of poplar plantation were studied.[Results](1)Compared with the control,the carbon storage of poplar plantation significantly increased under the treatments of N3 and N4,and most significantly increased by 21.6% ;under the treatment of N3.(2)All treatments significantly increased soil carbon storage in 0-15 cm soil layer,but had no significant effect on soil carbon storage in 30-45 cm soil layer.(3)N2,N3 and N4 had significant effects on litter carbon storage,and N3 had the strongest effect,increasing by 49.7% .All treatments reduced the carbon storage of understory vegetation layer,but the difference was not significant.(4)Correlation analysis showed that the carbon storage in each layer of poplar plantation was positively correlated with TN,MBN,DON and DOC in soil,and negatively correlated with p H and C/N.[Conclusion]Under N3 treat-ment,15 g/(m2·a),had the greatest effect on carbon storage in Dongtai poplar plantation,which was conducive to the rapid and stable accumulation of carbon storage in the ecosystem.关键词
碳储量/氮添加/杨树人工林/苏北沿海地区Key words
carbon storage/nitrogen addition/poplar plantation/coastal region of northern Jiangsu Province分类
农业科技引用本文复制引用
安宇超,顾宇晨,张茜,王国兵..长期氮添加对苏北杨树人工林碳储量的影响[J].水土保持研究,2024,31(2):27-32,42,7.基金项目
国家重点研发计划"森林经营措施对南方杨树人工林碳储量及其组成的影响机制"(2021YFD220040203) （2021YFD220040203）
