2026-04-14T02:56:28Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4862442025-08-31T18:30:28Zcom_2072_98col_2072_378192

Allocation Patterns and Strategies of Carbon, Nitrogen, and Phosphorus Densities in Three Typical Desert Plants Zhao, Guangxing Tariq, Akash Mu, Zhaobin Zhang, Zhihao Graciano, Corina Cong, Mengfei Dong, Xinping Sardans i Galobart, Jordi Al-Bakre, Dhafer A Peñuelas, Josep Zeng, Fanjiang Nutrient-use strategy Adaptive differentiation Biomass allocation Carbon-nitrogen-phosphorous densities The densities of carbon, nitrogen, and phosphorus (C-N-P) reflect the adaptation and response of desert plants to hyper-arid environments. However, the allocation strategies for biomass and C-N-P densities among various plant life forms remain poorly understood. This study involved the collection of samples representing both aboveground and belowground biomass (to depths of 200 cm) from three desert plant species-both herbaceous and shrubby-and evaluating their C-N-P densities. The investigation focused on the distribution strategies and drivers influencing total C-N-P densities within the plant-soil system. The results indicated that the biomass of the shrub Tamarix ramosissima (8.88 ± 1.22 kg m) was significantly greater than that of the herbaceous plants Alhagi sparsifolia (0.96 ± 0.15 kg m) and Karelinia caspia (0.72 ± 0.09 kg m). The total C density among the three species was observed as follows: T. ramosissima (9.26 ± 0.99 kg m) > A. sparsifolia (6.21 ± 0.85 kg m) > K. caspia (6.18 ± 1.12 kg m). Notably, no significant differences were detected in the total N and P densities across the species. Additionally, for A. sparsifolia and K. caspia, the roots exhibited greater biomass and C-N-P densities. Further analysis revealed that soil pools accounted for 56.34-95.10% of total C density, 90.39-98.63% of total N density, and 99.86-99.97% of total P density in the plant-soil system. The order of total C-N-P densities was established as C > P > N, decoupling total P density from other environmental factors. Total C and N densities in the three plant species were predominantly influenced by soil physicochemical properties, with biotic factors and microbial biomass playing secondary roles. This study improves the understanding of C-N-P densities strategies of dominant vegetation for restoration and sustainable management in hyper-arid deserts. 2025-08-31T18:30:28Z 2025-08-31T18:30:28Z 2025-08-31T18:30:28Z 2025 Article http://hdl.handle.net/2072/486244 Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación PID2023-153125NB-I00 Plants ; Vol. 14, Núm. 11 (June 2025), art. 1595 open access Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. https://creativecommons.org/licenses/by/4.0/