accumulationofresidualsoilmicrobialcarboninchinesefirplantationsoilsafternitrogenandphosphorusadditions

	accumulationofresidualsoilmicrobialcarboninchinesefirplantationsoilsafternitrogenandphosphorusadditions
	Ma Zhiqiang 1; Zhang Xinyu 1; Zhang Chuang 2; Wang Huimin 1; Chen Fusheng 3; Fu Xiaoli 1; Fang Xiangmin 3; Sun Xiaomin 1; Lei Qiuliang 4
刊名	journalofforestryresearch
	2018
卷号	029 期号:004 页码:953
ISSN号	1007-662X
英文摘要	Nitrogen （N） and phosphorus （P） additions can affect soil microbial carbon （C） accumulation. However, the mechanisms that drive the changes in residual microbial C that occur after N and P additions have not been well-defined for Chinese fir plantations in subtropical China. We set up six different treatments, viz. a control （CK）, two N treatments （NI： 50kgha-1 a-1; N2： 100 kg ha-1 a-1）, one P treatment （P： 50 kg ha-1 a-1）, and two combined N and P treatments （NIP： 50kgha-1a-1 of N ＋50kgha-1a-1 of P; N2P：100 kg ha-1 a-1 of N ＋ 50 kg ha-1 a-1 of P）. We then investigated the influences of N and P additions on residual microbial C. The results showed that soil pH and microbial biomass decreased after N additions, while microbial biomass increased after P additions. Soil organic carbon （SOC） and residual microbial C contents increased in the N and P treatments but not in the control. Residual microbial C accumulation varied according to treatment and declined in the order： N2P 〉 N1P 〉 N2 〉 N1 〉 P 〉 CK. Residual microbial C contents were positively correlated with available N, P, and SOC contents, but were negatively correlated with soil pH. The ratio of residual fungal C to residual bacterial C increased under P additions, but declined under combined N1P additions. The ratio of residual microbial C to SOC increased from 11 to 14% under the N1P and N2P treatments, respectively. Our results suggest that the concentrations of residual microbial C and the stability of SOC would increase under combined applications of N and P fertilizers in subtropical Chinese fir plantation soils.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/113351]
专题	中国科学院地理科学与资源研究所
作者单位	1.中国科学院地理科学与资源研究所 2.沈阳农业大学 3.江西农业大学 4.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences
推荐引用方式 GB/T 7714	Ma Zhiqiang,Zhang Xinyu,Zhang Chuang,et al. accumulationofresidualsoilmicrobialcarboninchinesefirplantationsoilsafternitrogenandphosphorusadditions[J]. journalofforestryresearch,2018,029(004):953.
APA	Ma Zhiqiang.,Zhang Xinyu.,Zhang Chuang.,Wang Huimin.,Chen Fusheng.,...&Lei Qiuliang.(2018).accumulationofresidualsoilmicrobialcarboninchinesefirplantationsoilsafternitrogenandphosphorusadditions.journalofforestryresearch,029(004),953.
MLA	Ma Zhiqiang,et al."accumulationofresidualsoilmicrobialcarboninchinesefirplantationsoilsafternitrogenandphosphorusadditions".journalofforestryresearch 029.004(2018):953.