Carbon assimilation, water consumption and water use efficiency under different land use types in subtropical ecosystems: from native forests to pine plantations

Cristiano, Piedad M.; Villa, María; Diego, M.S. De; Lacoretz, Mariela V.; Madanes, Nora; Goldstein, Guillermo

doi:10.1016/j.agrformet.2020.108094

Cited by 20 publications

(7 citation statements)

References 60 publications

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“…The results showed that both sites were in the status of water-balance because the actual expenditure of all study sites was less than the actual input water at the annual scale (Figure 10 and Table 4). This result was consistent with the subtropical forests (Cristiano et al, 2020;Song et al, 2017).…”

Section: Effects Of Pruning and Land-use Conversion On Water Balancesupporting

confidence: 90%

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

Geng

Pang

et al. 2022

Hydrological Processes

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Widespread clearing of natural forests for tea plantations have profoundly altered the local water balance and energy budget. However, studies of comprehensive effects of land‐use conversion on energy and hydrological cycling are still rare. In this study, we used 5 years (2014–2018) of eddy covariance (EC) data, modelled estimates, and hydrological monitoring of different functional layers (canopy, litter and soil layers) to summarize the seasonal and inter‐annual variations and differences of evapotranspiration and water balance components in tea plantations (Camellia sinensis) and natural bamboo forests (Phyllostachysedulis). Results suggested the bamboo forest had higher actual evapotranspiration (ETa) (835 ± 5 mm) than the tea plantation (730 ± 19 mm), owing to differences in canopy conditions and plant physiology. Evident differences in ETa components were found between the tea plantation site and the bamboo forest site. The proportion of transpiration (Etr) was higher at the bamboo site (0.71–0.76) than the tea plantation site (0.60–0.65). Additionally, the soil evaporation ratio (0.10–0.13) was lower at the bamboo forest site than the tea plantation site (0.21–0.24) due to vegetation structure differences altering the radiation energy partitioning between the two sites. Moreover, the tea plantations were more susceptible to drought stress with low water storage in soil and simple rhizome‐root system. The comprehensive water holding capacity of canopy, litter, and soil layers of bamboo forest was 1.0–1.8 times of that in tea plantation. Compared with bamboo forest, pruning and losing of soil with intensive management activities enhanced drainage at the tea plantation site. This study provides insights into land‐use conversion of subtropical forest and managed tea plantation that have important implications on regional energy and water budgets.

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Section: Effects Of Pruning and Land-use Conversion On Water Balancesupporting

confidence: 90%

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

Geng

Pang

et al. 2022

Hydrological Processes

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“…However, because crops in different growing seasons had different response degrees (slopes) to meteorological elements, WUE exhibited as non-linear relationships with meteorological elements similar to such as winter wheat-summer maize rotation cropland on the annual scale (Chen, Zhang, et al 2021). In contrast, the relationship between WUE and meteorological elements was linear in forests (Cristiano et al 2020), grassland and meadow (Zhu et al 2017). This difference indicated that the planting system of rotation cropland was an important reason for this non-linear effect.…”

Section: Impact Of Asymmetrical Variations Of Gpp and Et On Wuementioning

confidence: 98%

“…Variability in water use efficiency (WUE) reflected the tradeoff between water loss and carbon gain during photosynthetic carbon assimilation (Yu et al 2008). A series of studies on WUE were carried out around the world, most of which focused on forests and grasslands (Zhu et al 2017;Nie et al 2021;Cristiano et al 2020). Although several studies reported disparities in WUE under different time scales, crop types, climate and water regimes, the mechanism of WUE change in crops is still uncertain.…”

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confidence: 99%

Diurnal and Seasonal Variations of Water Use Efficiency of Rice–Wheat Rotation Cropland in the Jianghuai River Basin of China

Zhao,

Zhang,

Weng

et al. 2024

J Agronomy Crop Science

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Rice–wheat rotation cropland is one of the most important agroecosystems in South China, the escalation of conflict between food demand augment and water supply shortage increased with climate change. Water use efficiency plays a more significant role in optimising water and carbon management. Thus, the diurnal and seasonal variations of water use efficiency were assessed by the 3‐year eddy covariance observations in the Shouxian National Observatory, a typical rice–wheat rotation station. The results revealed a ‘U’‐shaped diurnal pattern of water use efficiency for winter wheat (Triticum aestivum L.) and rice (Oryza sativa L.). Seasonal water use efficiency had two peaks with the highest in the winter wheat‐growing season. The average water use efficiency for the rice–wheat rotation cropland was 2.85 g C kg−1 H2O over the whole year with 2.62 and 3.11 g C kg−1 H2O for winter wheat and rice, respectively. However, gross primary productivity and evapotranspiration of rice were higher than those of winter wheat. Temperature, photosynthetically active radiation were the principal impact factors of water use efficiency in the rice‐growing season. Comparatively, soil water and vapour pressure deficit dominated the water use efficiency changes in the winter wheat‐growing season. Our analyses can help understand the water use requirements for carbon assimilation on rice–wheat rotation cropland on the field scale.

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“…Schwärzel et al [7] also showed that understory, as opposed to overstory, may be an unexpected key major water consumer regulator. In situ water balance studies have shown differences among vegetation types, and a major common finding indicates that water use is a function of leaf area as a key driver, triggered by atmospheric demand [62,88,89]. This suggests that effects on ecosystem water resources are mainly physical, and forest plantations may not differ from a broad range of natural forests that sustain similar leaf area levels under the same conditions of atmospheric demand.…”

Section: Implications For Water Use Carbon Allocation and Growthmentioning

confidence: 99%

Water and Temperature Ecophysiological Challenges of Forests Plantations under Climate Change

Rubilar,

Valverde,

Barrientos

et al. 2024

Forests

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Climate change has impacted the environmental conditions in which forest plantations grow worldwide. Droughts and extreme temperatures have compromised the survival and productivity of plantations, and the effects on carbon and water balance have increased risks to sustained productivity and sustainability. Interestingly, opportunities for improvement rely on a better understanding of the ecophysiological response of species or genotypes, their tolerance or resistance to thermal and water stress, and genetic–environmental interactions. Our manuscript summarizes tree and stand-level major reported ecophysiological responses that could challenge the establishment and development of forest plantations under future climate change scenarios. The manuscript discusses potential climate change effects on plantation forest productivity, carbon balance, water use, and water use efficiency, and suggests some potential silvicultural strategies to avoid or reduce risks under uncertain climate scenarios. An integrated approach to understanding the linkages between water resource availability and plant-stand carbon balance is proposed to provide sustainable management that may alleviate the social and environmental concerns associated with challenges relating to climate change for managed forests and the forest industry.

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Carbon assimilation, water consumption and water use efficiency under different land use types in subtropical ecosystems: from native forests to pine plantations

Cited by 20 publications

References 60 publications

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

The effects of land‐use conversion on evapotranspiration and water balance of subtropical forest and managed tea plantation in Taihu Lake Basin, China

Diurnal and Seasonal Variations of Water Use Efficiency of Rice–Wheat Rotation Cropland in the Jianghuai River Basin of China

Water and Temperature Ecophysiological Challenges of Forests Plantations under Climate Change

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