The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century
Water-use efficiency (WUE) is a critical component that links plant carbon (CO2) and water cycles through various aspects of plant ecosystem functioning. However, the variations of plant CO2 in response to water use efficiency (WUE) across temperate dryland ecosystems remains inadequately understood...
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| Language: | English |
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Elsevier
2025-02-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X24015279 |
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| author | Alphonse Kayiranga Xi Chen Xuexi Ma Dative Ingabire Tie Liu Yaoming Li Emeka Edwin Igboeli Eldiiar Duulatov Hubert Hirwa Clement Nzabanita Ping Hu |
| author_facet | Alphonse Kayiranga Xi Chen Xuexi Ma Dative Ingabire Tie Liu Yaoming Li Emeka Edwin Igboeli Eldiiar Duulatov Hubert Hirwa Clement Nzabanita Ping Hu |
| author_sort | Alphonse Kayiranga |
| collection | DOAJ |
| description | Water-use efficiency (WUE) is a critical component that links plant carbon (CO2) and water cycles through various aspects of plant ecosystem functioning. However, the variations of plant CO2 in response to water use efficiency (WUE) across temperate dryland ecosystems remains inadequately understood. In this study, we examined the patterns and magnitude of WUE effects on desert vegetation aboveground biomass (AGB) and carbon stocks (C. stocks) and related fluxes by utilizing multiple streams of state-of-the-art multispectral satellite imagery and polynomial model across the temperate drylands of Central Asia (CA) from 2000 to 2023. The results indicated an annual increase in desert vegetation AGB density of 0.04 ± 0.66 kg.m2. yr−1 and in C. stocks of 0.32 ± 0.85 kg C.m2. yr−1. The results showed also that during 2000–2023, the total biomass density and total C. stocks of the CA desert ecosystems were amounted to 5.52 ± 1.19 Gt and 3.12 ± 0.88 Pg C with 0.044 Pg C and 0.218 Pg C the actual total C. sources and C. sinks, respectively. Among the desert plants’ water fluxes, water use efficiency at canopy conductance (iWUE) showed a significant impact on C. stocks (R2 = 0.57) compared to desert ecosystem water use efficiency (vWUE) and water use efficiency at plant respiration (tWUE). These findings have implications on regional strategies for CO2 controls and climate change mitigations and adaptation along the different global desert ecosystems. |
| format | Article |
| id | doaj-art-e3461a5aafff44649a07cf2451c37a7c |
| institution | Kabale University |
| issn | 1470-160X |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj-art-e3461a5aafff44649a07cf2451c37a7c2025-02-02T05:26:56ZengElsevierEcological Indicators1470-160X2025-02-01171113070The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st centuryAlphonse Kayiranga0Xi Chen1Xuexi Ma2Dative Ingabire3Tie Liu4Yaoming Li5Emeka Edwin Igboeli6Eldiiar Duulatov7Hubert Hirwa8Clement Nzabanita9Ping Hu10State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011 Xinjiang, China; Xinjiang Key Laboratory of RS & GIS Application, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Organization of African Doctors (OAAD), Off Kamit Road, P.O Box 25305000100, Nairobi, KenyaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011 Xinjiang, China; Xinjiang Key Laboratory of RS & GIS Application, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Zhejiang University of Technology, No.18, Chaowang Road, Hangzhou 310023 Zhejiang Province, China; University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing 1000875, China; Corresponding author.State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011 Xinjiang, ChinaDepartment of Humanities and Social Sciences, Indian Institute of Technology, Guwahati, Assam 781039, IndiaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011 Xinjiang, China; Xinjiang Key Laboratory of RS & GIS Application, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing 1000875, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Research Center for Ecology and Environment of Central Asia, Chinese Academy of Sciences, Urumqi 830011 Xinjiang, China; University of Chinese Academy of Sciences, No.19 Yuquan Road, Beijing 1000875, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing Road, Urumqi 830011 Xinjiang, China; Department of Geography, University of Nigeria, Nsukka, Enugu State, NigeriaInstitute of Geology National Academy of Sciences of the Kyrgyz Republic, #30 Erkindik Blvd, 720040 Bishkek, Kyrgyz Republic; Research Center for Ecology and Environment in Central Asia (Bishkek), #30 Erkindik Blvd, 720040 Bishkek, Kyrgyz Republic; American University of Central Asia, 7/6 Aaly Tokombaev St, Bishkek 720060, Kyrgyz RepublicSustainability Institute, School of the Environment, Florida Agricultural and Mechanical University, FL 32307, USAInstitute of Zoology, Guangdong Academy of Sciences, Guangzhou 510260, ChinaSchool of Computer Science and Technology, Xinjiang University, 777 Huarui Street, Shuimogou District, Urumqi 830046 Xinjiang Province, ChinaWater-use efficiency (WUE) is a critical component that links plant carbon (CO2) and water cycles through various aspects of plant ecosystem functioning. However, the variations of plant CO2 in response to water use efficiency (WUE) across temperate dryland ecosystems remains inadequately understood. In this study, we examined the patterns and magnitude of WUE effects on desert vegetation aboveground biomass (AGB) and carbon stocks (C. stocks) and related fluxes by utilizing multiple streams of state-of-the-art multispectral satellite imagery and polynomial model across the temperate drylands of Central Asia (CA) from 2000 to 2023. The results indicated an annual increase in desert vegetation AGB density of 0.04 ± 0.66 kg.m2. yr−1 and in C. stocks of 0.32 ± 0.85 kg C.m2. yr−1. The results showed also that during 2000–2023, the total biomass density and total C. stocks of the CA desert ecosystems were amounted to 5.52 ± 1.19 Gt and 3.12 ± 0.88 Pg C with 0.044 Pg C and 0.218 Pg C the actual total C. sources and C. sinks, respectively. Among the desert plants’ water fluxes, water use efficiency at canopy conductance (iWUE) showed a significant impact on C. stocks (R2 = 0.57) compared to desert ecosystem water use efficiency (vWUE) and water use efficiency at plant respiration (tWUE). These findings have implications on regional strategies for CO2 controls and climate change mitigations and adaptation along the different global desert ecosystems.http://www.sciencedirect.com/science/article/pii/S1470160X24015279Vegetation water use efficiencyCarbon dynamicsTemperate dryland ecosystemsPlant canopy waterAboveground biomassCanopy conductance |
| spellingShingle | Alphonse Kayiranga Xi Chen Xuexi Ma Dative Ingabire Tie Liu Yaoming Li Emeka Edwin Igboeli Eldiiar Duulatov Hubert Hirwa Clement Nzabanita Ping Hu The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century Ecological Indicators Vegetation water use efficiency Carbon dynamics Temperate dryland ecosystems Plant canopy water Aboveground biomass Canopy conductance |
| title | The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century |
| title_full | The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century |
| title_fullStr | The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century |
| title_full_unstemmed | The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century |
| title_short | The responses of vegetation water use efficiency to biomass density and CO2 balance in dryland of Central Asia during 21st century |
| title_sort | responses of vegetation water use efficiency to biomass density and co2 balance in dryland of central asia during 21st century |
| topic | Vegetation water use efficiency Carbon dynamics Temperate dryland ecosystems Plant canopy water Aboveground biomass Canopy conductance |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X24015279 |
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