Journal of Plant Ecology ›› 2026, Vol. 19 ›› Issue (2): 1-.DOI: 10.1093/jpe/rtaf163
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Senhao Wang1,2,3,4,†, Kaijun Zhou5,†, Taiki Mori1,2,3,6, Andi Li1,2,3, Cheng Peng1,2,3,7, Guangcan Yu1,2,3, Enqing Hou1,2,3, Sihan Yao8, Linjie Fan1,2,3,9, Baixin Zhang1,2,3,9, Yufang Wang1,2,3,10, Qing Ye1,2,3, Weiren Wang1,2,3,9, Shun Zou11, Xiangping Tan1,2,3, Qinggong Mao1,2,3, Mianhai Zheng1,2,3, Juan Huang1,2,3, Zhanfeng Liu1,2,3, Jiangming Mo1,2,3 and Wei Zhang1,2,3,*
1Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China, 2South China National Garden, Guangzhou 510650, China, 3Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, Guangzhou 510650, China, 4Guangzhou Academy of Agricultural and Rural Sciences, Guangzhou 510300, China, 5The Protection Center of Agricultural Environment and Cultivated Land Quality of Guangdong Province, Guangzhou 510000, China, 6Kyushu Research Center, Forestry and Forest Products Research, Kumamoto 860-0862, Japan, 7Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Halle (Saale) 06120, Germany, 8The Affiliated High School of South China Normal University, Guangzhou 510630, China, 9College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China, 10Shiyan Forestry Science Research Institute, Shiyan 442700, China, 11Guizhou University of Engineering Science, Bijie 551700, China
*Corresponding author. E-mail: zhangwei@scbg.ac.cn
†These authors contributed equally to this work.
摘要： 豆科树种比非豆科树种具备更强的固氮能力，这一特性使其能为磷酸酶合成提供更多氮源，从而具有“磷获取优势”。然而，目前尚不清楚长期氮沉降情景下这一优势能否能够持续。本研究在一项亚热带森林模拟氮沉降实验的第7年，分别采集了豆科与非豆科树种主导的人工林表层土壤，测定其酸性磷酸酶活性。此外，本研究还整合了实验第 2、8、12、13 年的磷酸酶活性数据，进而评估氮添加效应的时间动态。结果发现、长期氮输入后两种人工林土壤酸性磷酸酶活性的差异逐渐消失，且高氮添加会加速这一过程。究其原因，长期施氮条件下非豆科树种的磷限制加剧促使其合成更多磷酸酶，而豆科树种土壤氮含量对磷酸酶活性的贡献效率与非豆科相比持续降低，表明土壤氮含量不再主导酸性磷酸酶的活性变化。上述结果表明，长期高氮沉降会加速豆科人工林 “磷获取优势” 的消失，将来研究需进一步阐明全球变化背景下豆科与非豆科树种在磷利用策略方面的差异。
