Zhiyao Tang1, Wenting Xu2, Guoyi Zhou3, Yongfei Bai2, Jiaxiang Li2,4, Xuli Tang3, Dima Chen2, Qing Liu5, Wenhong Ma6, Gaoming Xiong2, Honglin He7, Nianpeng He7, Yanpei Guo1, Qiang Guo1, Jiangling Zhu1, Wenxuan Han8, Huifeng Hu2, Jingyun Fang9,2, Zongqiang Xie10. 1. Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China 100871. 2. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China 100093. 3. South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China 510650. 4. College of Forestry, Central South University of Forestry and Technology, Changsha, China 410004. 5. Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China 610041. 6. School of Life Science, Inner Mongolia University, Hohhot, China 010021. 7. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China 100101. 8. College of Resource and Environmental Sciences, China Agriculture University, Beijing 100193, China. 9. Key Laboratory for Earth Surface Processes of the Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing, China 100871; jyfang@urban.pku.edu.cn xie@ibcas.ac.cn. 10. State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China 100093; jyfang@urban.pku.edu.cn xie@ibcas.ac.cn.
Abstract
Plant nitrogen (N) and phosphorus (P) content regulate productivity and carbon (C) sequestration in terrestrial ecosystems. Estimates of the allocation of N and P content in plant tissues and the relationship between nutrient content and photosynthetic capacity are critical to predicting future ecosystem C sequestration under global change. In this study, by investigating the nutrient concentrations of plant leaves, stems, and roots across China's terrestrial biomes, we document large-scale patterns of community-level concentrations of C, N, and P. We also examine the possible correlation between nutrient content and plant production as indicated by vegetation gross primary productivity (GPP). The nationally averaged community concentrations of C, N, and P were 436.8, 14.14, and 1.11 mg·g-1 for leaves; 448.3, 3.04 and 0.31 mg·g-1 for stems; and 418.2, 4.85, and 0.47 mg·g-1 for roots, respectively. The nationally averaged leaf N and P productivity was 249.5 g C GPP·g-1 N·y-1 and 3,157.9 g C GPP·g-1 P·y-1, respectively. The N and P concentrations in stems and roots were generally more sensitive to the abiotic environment than those in leaves. There were strong power-law relationships between N (or P) content in different tissues for all biomes, which were closely coupled with vegetation GPP. These findings not only provide key parameters to develop empirical models to scale the responses of plants to global change from a single tissue to the whole community but also offer large-scale evidence of biome-dependent regulation of C sequestration by nutrients.
pan class="Chemical">Plant pan class="Chemical">nitrogen (N) and phosphorus (P) content regulate productivity and carbon (C) sequestration in terrestrial ecosystems. Estimates of the allocation of N and P content in plant tissues and the relationship between nutrient content and photosynthetic capacity are critical to predicting future ecosystem C sequestration under global change. In this study, by investigating the nutrient concentrations of plant leaves, stems, and roots across China's terrestrial biomes, we document large-scale patterns of community-level concentrations of C, N, and P. We also examine the possible correlation between nutrient content and plant production as indicated by vegetation gross primary productivity (GPP). The nationally averaged community concentrations of C, N, and P were 436.8, 14.14, and 1.11 mg·g-1 for leaves; 448.3, 3.04 and 0.31 mg·g-1 for stems; and 418.2, 4.85, and 0.47 mg·g-1 for roots, respectively. The nationally averaged leaf N and P productivity was 249.5 g C GPP·g-1 N·y-1 and 3,157.9 g C GPP·g-1 P·y-1, respectively. The N and P concentrations in stems and roots were generally more sensitive to the abiotic environment than those in leaves. There were strong power-law relationships between N (or P) content in different tissues for all biomes, which were closely coupled with vegetation GPP. These findings not only provide key parameters to develop empirical models to scale the responses of plants to global change from a single tissue to the whole community but also offer large-scale evidence of biome-dependent regulation of C sequestration by nutrients.
Authors: Richard J Norby; Jeffrey M Warren; Colleen M Iversen; Belinda E Medlyn; Ross E McMurtrie Journal: Proc Natl Acad Sci U S A Date: 2010-10-25 Impact factor: 11.205
Authors: P H Templer; M C Mack; F S Chapin; L M Christenson; J E Compton; H D Crook; W S Currie; C J Curtis; D B Dail; C M D'Antonio; B A Emmett; H E Epstein; C L Goodale; P Gundersen; S E Hobbie; K Holland; D U Hooper; B A Hungate; S Lamontagne; K J Nadelhoffer; C W Osenberg; S S Perakis; P Schleppi; J Schimel; I K Schmidt; M Sommerkorn; J Spoelstra; A Tietema; W W Wessel; D R Zak Journal: Ecology Date: 2012-08 Impact factor: 5.499
Authors: Sandra M Durán; Roberta E Martin; Sandra Díaz; Brian S Maitner; Yadvinder Malhi; Norma Salinas; Alexander Shenkin; Miles R Silman; Daniel J Wieczynski; Gregory P Asner; Lisa Patrick Bentley; Van M Savage; Brian J Enquist Journal: Sci Adv Date: 2019-12-04 Impact factor: 14.957