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Driving mechanisms of gross primary productivity geographical patterns for Qinghai-Tibet Plateau lake systems
Jia, Junjie1,2; Wang, Yafeng3; Lu, Yao1,2; Sun, Kun1; Lyu, Sidan1; Gao, Yang1,2
2021-10-15
Source PublicationSCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
Volume791Pages:11
Corresponding AuthorGao, Yang(gaoyang@igsnrr.ac.cn)
AbstractBeing a fundamental property of aquatic systems, gross primary productivity (GPP) is affected by complex environmental factors, such as salinity, nutrients, pH, and sunlight. Under conditions of intensified anthropogenic activity and climate change, it is critical to understand the driving mechanisms of GPP in alpine lakes. In this study, we investigated GPP and associated environmental factors of 23 lake systems in the Qinghai-Tibet Plateau (QTP) along an altitudinal range (from 2500 m to 4500 m). Results showed an increase in chlorophyll a (Chl a) content as altitude increased and a corresponding decrease as salinity increased. Furthermore, geographical patterns of GPP were higher at the mid-gradient and lower at the extreme gradient. Higher solar radiation and water temperatures, stronger evaporation and higher salinity levels, and lower pH and higher nutrient content were all driving mechanisms of GPP in low altitudinal lake systems within high latitudinal regions. Such conditions have collectively resulted in the current GPP pattern via the promotion or inhibition of phytoplankton growth and photosynthesis. Specifically, geographical features and climate change jointly drive algal growth and GPP of alpine lake systems via internal circulation processes; however, anthropogenic activities interfere with external circulation processes for most of lower-middle altitudinal lake systems, thus playing a certain role in regulating environmental factors and GPP alongside climate change. (c) 2021 Elsevier B.V. All rights reserved.
KeywordGross primary productivity (GPP) Alpine lakes Altitude Salinity Climatic change Qinghai-Tibet Plateau (QTP)
DOI10.1016/j.scitotenv.2021.148286
WOS KeywordNITROGEN DEPOSITION ; VARIABILITY ; COMMUNITIES ; DIVERSITY ; RADIATION ; WATER
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China[31988102] ; National Nature Science Foundation of China[41971134] ; National Nature Science Foundation of China[41922003] ; Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK060602]
Funding OrganizationNational Nature Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000686012800002
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/164684
Collection中国科学院地理科学与资源研究所
Corresponding AuthorGao, Yang
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosystem Network Observat & Modeling, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Jia, Junjie,Wang, Yafeng,Lu, Yao,et al. Driving mechanisms of gross primary productivity geographical patterns for Qinghai-Tibet Plateau lake systems[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,791:11.
APA Jia, Junjie,Wang, Yafeng,Lu, Yao,Sun, Kun,Lyu, Sidan,&Gao, Yang.(2021).Driving mechanisms of gross primary productivity geographical patterns for Qinghai-Tibet Plateau lake systems.SCIENCE OF THE TOTAL ENVIRONMENT,791,11.
MLA Jia, Junjie,et al."Driving mechanisms of gross primary productivity geographical patterns for Qinghai-Tibet Plateau lake systems".SCIENCE OF THE TOTAL ENVIRONMENT 791(2021):11.
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