Determinants of net primary productivity: Low-carbon development from the perspective of carbon sequestration

Liu, Xin; Wang, Ping; Song, Hang; Xiao-ying, Zeng

doi:10.1016/j.techfore.2021.121006

Cited by 33 publications

(19 citation statements)

References 58 publications

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“…However, in well-watered conditions light is the main driver for photosynthesis and transpiration (Eamus et al, 2016a(Eamus et al, , 2016bS. Liu et al, 2021;X. Liu et al, 2021) since carbon and water exchange increase as more light is intercepted by the canopy (Arkebauer et al, 2009;Samanta et al, 2020;Wilson et al, 2001).…”

Section: Environmental Controls On Et-gpp Synchrony and Nee-iwue Rela...mentioning

confidence: 99%

“…Efforts to achieve carbon neutrality and promote low-carbon development require climatesmart agriculture where crops cope with climate change impacts and emit relatively low greenhouse gases (Jennings et al, 2020;Lipper et al, 2014;X. Liu et al, 2021) such as carbon dioxide (CO2) (Bouzalakos and Mercedes, 2010;Guo et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Liu et al, 2021) such as carbon dioxide (CO2) (Bouzalakos and Mercedes, 2010;Guo et al, 2017). Vegetation plays a key role to achieve carbon neutrality through photosynthetic CO2 sequestration (Guo et al, 2017;X. Liu et al, 2021), therefore, is quite essential to understand how agroecosystems can act as carbon sinks and reduce the carbon flux from land into the atmosphere (Wood, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Responses in the Coupling of Carbon and Water Vapor Exchanges of Irrigated and Rainfed Andean Potato (<i>Solanum Tuberosum</i> Subsp. Andigenum) Agroecosystems

Martínez-Maldonado¹,

Castaño-Marín²,

Vinasco³

et al. 2023

Preprint

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We studied the link between carbon and water fluxes to understand the response of net ecosystem carbon exchange (NEE) to water availability conditions of three different potato water regimes cropping systems [full irrigation (FI), deficit irrigation (DI) and rainfed (RF)]. Through the eddy covariance technique, we measured CO2 and water vapor exchanges and determined surface resistances, omega factor, and inherent water use efficiency (IWUE). Additionally, continuous plant growth determinations of leaf area index (LAI) and specific leaf area (SLA) were made over the three cropping systems. The RF potato was a net carbon source (NEE = 187.21 ± 3.84 g C m−2), while both, FI (NEE= −311.96 ± 12.82 g C m−2) and DI (−17.3 ± 4.6 g C m−2) were a net carbon sink. Greater sink activity is due to high fluxes of gross primary productivity (GPP) [where the GPP > ecosystem respiration (Reco)] and evapotranspiration (ET), and the high efficiency in the exchange of carbon and water. Without water limitations, the larger canopy, with greater photosynthetic activity (GPP/Reco > 2) as well as with low internal resistance offers a greater area for water and carbon exchange, and the highly coupled and synchronized ET – GPP fluxes are primarily controlled by the radiative environment. The lower sink capacity of the DI potato crop and the carbon source activity from the RF, are consequences of a smaller area for water and carbon exchange due to the smaller canopy, and a low IWUE from decoupled and desynchronized carbon and water exchange caused by unbalanced restrictions on ET and GPP fluxes. Specifically, at DI potato, ET remained at a high rate, while GPP was reduced by means of non-stomatal limitations. In the rainfed potato, vapor pressure deficit (VPD) played a significant role increasing midday canopy resistance (Rc) up to 13 times compared to irrigated sites, when VPD was around 0.8 kPa. In consequence, ET and GPP fluxes decreased together, but GPP decreased more than ET because of stomatal and non-stomatal limitations.

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Section: Environmental Controls On Et-gpp Synchrony and Nee-iwue Rela...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Responses in the Coupling of Carbon and Water Vapor Exchanges of Irrigated and Rainfed Andean Potato (<i>Solanum Tuberosum</i> Subsp. Andigenum) Agroecosystems

Martínez-Maldonado¹,

Castaño-Marín²,

Vinasco³

et al. 2023

Preprint

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“…However, in the process of urbanization, a large number of woodlands, grasslands, and wetlands are occupied and transferred for construction uses [30,31]. China's urban construction land increased from 168,015 km 2 to 215,841 km 2 between 2000 and 2015, with a rise rate of 28.47% [32]. The continuous conversion of large-scale natural ecosystems such as forests, grasslands, and wetlands to arable land has resulted in a significant reduction in the level of regional carbon sinks to compensate for the massive expansion of urban areas and the subsequent loss of farmlands [33].…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Impact of Urbanization Process on Regional Net CO2 Emissions: Taking the Yangtze River Economic Belt as an Example

Shen

Hong

Jiang

et al. 2022

Land

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Urbanization is a powerful symbol and an inevitable human economic and social development trend. This process affects carbon dioxide emissions by changing the human output and lifestyle and encroaches over the carbon sink areas by adjusting the land use types impacting the regional carbon balance. We systematically analyzed the influence of urbanization on regional net CO2 emissions (NCE) and built a quantitative model for the impact of urbanization on NCE based on population, economy, and land use. Based on this, the Yangtze River Economic Belt (YREB) in China has been selected as an example to measure the characteristics of the spatial and temporal evolution of NCE from 2005 to 2018 by empirically testing the contributions of population urbanization, economic urbanization, and land urbanization to the NCE changes in YREB. According to the study’s findings, the carbon-neutral pressure index of the YREB increased over the study period, with an increase in NCE from 1706.50 Mt to 3106.05 Mt. The contribution of urbanization in this process increased and subsequently decreased in an inverted U pattern with a drop in the cumulative net emission of 260.32 Mt. The inflection points of the cumulative impact of urbanization on NCE in the midstream and upstream regions occurred in 2011 and 2010, respectively. Due to the high degree of urbanization and economic growth in the downstream area, the urbanization impact demonstrated a constant reduction of NCE over the research period. In terms of sub-dimensions, the population and land urbanization effects were consistently positive, while the economic urbanization affected the NCE and displayed an inverted U pattern during the study period. If the variation in regional carbon sink space is ignored, the impact of urbanization on CO2 emission reduction will be overestimated. We investigated the realization path of differentiated synergistic emission reduction strategies in the great river economic belts based on the empirical study on YREB.

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“…Large-scale research fields are more extensive. From a macro perspective, researchers use the InVEST model [ 14 , 15 ] to investigate the relationship, and results of interaction, between carbon sinks and climate change [ 16 ], land use change [ 17 , 18 ], landscape design [ 19 ], and carbon footprint [ 20 ]. However, due to their spatial relevance and heterogeneity, existing studies have not incorporated spatial factors into carbon sink impact mechanism research.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Evolution and Influencing Factors of Carbon Sink Dynamics at County Scale: A Case Study of Shaanxi Province, China

Liu

Xiao

Zhou

et al. 2021

IJERPH

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To explore the spatiotemporal evolution of carbon sinks in Shaanxi Province, and their impact mechanisms, this study used panel data from 107 counties (districts) in Shaanxi Province from 2000 to 2017. First, we conducted spatial distribution directional analysis and exploratory spatial data analysis (ESDA). Then, we constructed a geographic spatial weight matrix and used the spatial panel Durbin model to analyze the driving factors of carbon sink changes in Shaanxi Province, from the perspective of spatial effects. The results showed that: (1) The temporal evolution of carbon sinks during the study period showed an overall upward trend, but the carbon sinks of counties (districts) differed greatly, and the center of gravity of carbon sinks, as a whole, showed the characteristics of “south to north” migration. (2) The carbon sinks of Shaanxi Province have a significant positive global spatial autocorrelation in geographic space. The local spatial pattern was characterized by low-value agglomeration (low-low cluster) and high-value agglomeration (high-high cluster), supplemented by high-value bulge (high-low outlier) and low-value collapse (low-high outlier). (3) The result of the spatial measurement model proved that the spatial Durbin model, with dual fixed effects of time and space, should be selected. In the model results, factors such as population, per capita gross domestic product (GDP), local government general budget expenditure, and local government general budget revenue all reflect strong spatial spillover effects. Accordingly, in the process of promoting “carbon neutrality”, the government needs to comprehensively consider the existence of spatial spillover effects between neighboring counties (districts), and strengthen the linkage-management and control roles of counties (districts) in increasing carbon sinks.

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Determinants of net primary productivity: Low-carbon development from the perspective of carbon sequestration

Cited by 33 publications

References 58 publications

Responses in the Coupling of Carbon and Water Vapor Exchanges of Irrigated and Rainfed Andean Potato (<i>Solanum Tuberosum</i> Subsp. Andigenum) Agroecosystems

Responses in the Coupling of Carbon and Water Vapor Exchanges of Irrigated and Rainfed Andean Potato (<i>Solanum Tuberosum</i> Subsp. Andigenum) Agroecosystems

Multidimensional Impact of Urbanization Process on Regional Net CO2 Emissions: Taking the Yangtze River Economic Belt as an Example

Spatiotemporal Evolution and Influencing Factors of Carbon Sink Dynamics at County Scale: A Case Study of Shaanxi Province, China

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