title: Global Landscape of Total Organic Carbon, Nitrogen and Phosphorus in Lake Water.
abstract: Human activities continue to increase the amount of carbon (C), nitrogen (N) and phosphorus (P) in lakes, which may cause serious environmental and human health problems. Global landscape of total organic C (TOC), N and P in lake water is still poorly known. Using a global data set that covers ~8300 lakes from 68 countries/regions spanning six continents, we estimate that global mean concentrations and storage in lake water are 5.578 mg L(-1) and 984.0 Tg for TOC, 0.526 mg L(-1) and 92.8 Tg for TN, and 0.014 mg L(-1) and 2.5 Tg for TP. These lake elements are significantly interrelated and in uneven distribution, being associated with morphological characteristics and climate conditions. We proposed that global C, N and P cycles should be considered as a whole in biogeochemical studies and policy-making related to environmental protection.
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Chen
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
authors.forename: Guangming
authors.initials: G
authors.lastname: Zeng
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.|College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
authors.forename: Jiachao
authors.initials: J
authors.lastname: Zhang
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
authors.forename: Piao
authors.initials: P
authors.lastname: Xu
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.|College of Resources and Environment, Hunan Agricultural University, Changsha 410128, China.
authors.forename: Anwei
authors.initials: A
authors.lastname: Chen
authors.affiliation: College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.|Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
authors.forename: Lunhui
authors.initials: L
authors.lastname: Lu
mesh_terms: D002244:Carbon; D002980:Climate; D005843:Geography; D060106:Lakes; D009584:Nitrogen; D010758:Phosphorus; D014867:Water / Q000032:analysis* / Q000737:chemistry*
chemical_list: D014867:Water; D010758:Phosphorus; D002244:Carbon; D009584:Nitrogen