PMID- 37447063 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2223-7747 (Print) IS - 2223-7747 (Electronic) IS - 2223-7747 (Linking) VI - 12 IP - 13 DP - 2023 Jun 30 TI - Ecological Stoichiometry and Stock Distribution of C, N, and P in Three Forest Types in a Karst Region of China. LID - 10.3390/plants12132503 [doi] LID - 2503 AB - Ecological stoichiometry plays important roles in understanding the nutrient constraints on tree growth and development, as well in maintaining ecosystem services in forests, yet the characteristics of carbon:nitrogen:phosphorous (C:N:P) stoichiometry in forests under karst environment have not been sufficiently evaluated. In this study, concentration, distribution, stocks of Nitrogen (N) and Phosphorous (P), and ecological stoichiometry were studied in three common forest types: Masson pine natural forests (MPNF), Masson pine plantation forests (MPPF), and Slash pine plantation forests (SPPF) in a karst region of southwestern China. Results showed that N concentrations were higher in overstory than in understory and litter in the studied forests. However, P concentration was relatively low in overstory component of the forested ecosystems. Meanwhile, the N and P concentrations were higher in SPPF in the stem and litter, while these contents were higher in MPPF and MPNP in the overstory and understory. The N and P stocks ranged from 5.7-6.2 t ha(-1), and 0.5-0.6 t ha(-1) in the examined forests. The ecological stoichiometry of C:N:P in the three forest types was similar in litter (46-49:2:1), and relatively steady in soil (250-320:13-16:1) and tree leaf (100-200:14-20:1). Soil P status was the primary limiting factor in affecting tree growth in MPPF and SPPF (N:P ratio > 16), while both N and P conditions were the main restrictive factors in MPNP (N:P ratio = 15) in the study area. Our study provides scientific references and useful datasets of C:N:P stoichiometry for sustainable management of forest ecosystems in karst regions. FAU - Wang, Wancai AU - Wang W AD - State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Xianyang 712100, China. FAU - Peng, Yuanying AU - Peng Y AD - College of Arts and Sciences, Lewis University, Romeoville, IL 60446, USA. FAU - Chen, Yazhen AU - Chen Y AD - College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China. AD - National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Changsha 410004, China. FAU - Lei, Shilong AU - Lei S AD - Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Xianyang 712100, China. FAU - Wang, Xiaojun AU - Wang X AD - State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Xianyang 712100, China. FAU - Farooq, Taimoor Hassan AU - Farooq TH AUID- ORCID: 0000-0001-5478-1533 AD - College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China. AD - National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Changsha 410004, China. FAU - Liang, Xiaocui AU - Liang X AD - College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China. AD - National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Changsha 410004, China. FAU - Zhang, Chao AU - Zhang C AD - State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Xianyang 712100, China. AD - Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Xianyang 712100, China. FAU - Yan, Wende AU - Yan W AD - College of Life Science and Technology, Central South University of Forestry and Technology, Changsha 410004, China. AD - National Engineering Laboratory for Applied Forest Ecological Technology in Southern China, Changsha 410004, China. FAU - Chen, Xiaoyong AU - Chen X AUID- ORCID: 0000-0003-0810-9863 AD - College of Arts and Sciences, Governors State University, University Park, IL 60484, USA. LA - eng GR - U21A20187/Joint Funds of the National Natural Science Foundation of China/ GR - 2020YFA0608100/National Key R & D Program of China/ PT - Journal Article DEP - 20230630 PL - Switzerland TA - Plants (Basel) JT - Plants (Basel, Switzerland) JID - 101596181 PMC - PMC10346562 OTO - NOTNLM OT - Masson pine OT - Slash pine OT - karst region OT - nutrient OT - stoichiometry COIS- The authors declare no conflict of interest. EDAT- 2023/07/14 13:08 MHDA- 2023/07/14 13:09 PMCR- 2023/06/30 CRDT- 2023/07/14 01:21 PHST- 2023/05/22 00:00 [received] PHST- 2023/06/19 00:00 [revised] PHST- 2023/06/25 00:00 [accepted] PHST- 2023/07/14 13:09 [medline] PHST- 2023/07/14 13:08 [pubmed] PHST- 2023/07/14 01:21 [entrez] PHST- 2023/06/30 00:00 [pmc-release] AID - plants12132503 [pii] AID - plants-12-02503 [pii] AID - 10.3390/plants12132503 [doi] PST - epublish SO - Plants (Basel). 2023 Jun 30;12(13):2503. doi: 10.3390/plants12132503.