naa a22 4500 510737773 CHVBK 20180411083017.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s11284-013-1060-y doi (NATIONALLICENCE)springer-10.1007/s11284-013-1060-y Effects of nitrogen addition on litter decomposition, soil microbial biomass, and enzyme activities between leguminous and non-leguminous forests [Elektronische Daten] [Yanna Lv, Congyan Wang, Fangyuan Wang, Guiying Zhao, Gaozhong Pu, Xu Ma, Xingjun Tian] Anthropogenic nitrogen (N) deposition is an expanding problem that affects the functioning and composition of forest ecosystems, particularly the decomposition of forest litters. Legumes play an important role in the nitrogen cycle of forest ecosystems. Two litter types were chosen from Zijin Mountain in China: Robinia pseudoacacia leaves from a leguminous forest (LF) and Liquidambar formosana leaves from a non-leguminous forest (NF). The litter samples were mixed into original forest soils and incubated in microcosms. Then, they were treated by five forms of N addition: NH4 +, NO3 −, urea, glycine, and a mixture of all four. During a 6-month incubation period, litter mass losses, soil microbial biomass, soil pH, and enzyme activities were investigated. Results showed that mixed N and NO3 −-N addition significantly accelerated the litter decomposition rates of LF leaves, while mixed N, glycine-N, and urea-N addition significantly accelerated the litter decomposition rates of NF leaves. Litter decomposition rates and soil enzyme activities under mixed N addition were higher than those under single form of N additions in the two forest types. Nitrogen addition had no significant effects on soil pH and soil microbial biomass. The results indicate that nitrogen addition may alter microbial allocation to extracellular enzyme production without affecting soil microbial biomass, and then affected litter decomposition process. The results further reveal that mixed N is a more important factor in controlling litter decomposition process than single form of N, and may seriously affect soil N cycle and the release of carbon stored belowground. The Ecological Society of Japan, 2013 Leguminous forest nationallicence Litter decomposition nationallicence Nitrogen addition nationallicence Soil enzyme activities nationallicence Soil microbial biomass nationallicence Lv Yanna School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Wang Congyan School of Environmental Sciences, Zhenjiang University, 212013, Zhenjiang, People's Republic of China aut Wang Fangyuan School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Zhao Guiying School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Pu Gaozhong School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Ma Xu School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Tian Xingjun School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut Ecological Research Springer Japan 28/5(2013-09-01), 793-800 0912-3814 28:5<793 2013 28 11284 https://doi.org/10.1007/s11284-013-1060-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11284-013-1060-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lv Yanna School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Wang Congyan School of Environmental Sciences, Zhenjiang University, 212013, Zhenjiang, People's Republic of China aut NATIONALLICENCE 700 1- Wang Fangyuan School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Zhao Guiying School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Pu Gaozhong School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Ma Xu School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 700 1- Tian Xingjun School of Life Sciences, Nanjing University, Hankou Road 22, 210093, Nanjing, People's Republic of China aut NATIONALLICENCE 773 0- Ecological Research Springer Japan 28/5(2013-09-01), 793-800 0912-3814 28:5<793 2013 28 11284 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer