Effects of soil water and nitrogen availability on photosynthesis and water use efficiency of Robinia pseudoacacia seedlings

Liu, Xiping; Fan, Yangyang; Long, Junxia; Wei, Ruifeng; Kjelgren, Roger; Gong, Chunmei; Zhao, Jun

doi:10.1016/s1001-0742(12)60081-3

Cited by 85 publications

(55 citation statements)

References 60 publications

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“…Drought seems to negate the increase in productivity observed from increased N deposition [77,78], although the effects of N addition may alleviate some of the impacts of drought on growth [78]. This can be partially attributed to the countering effects of N and drought on photosynthesis; in particular, N deposition tends to increase photosynthetic capacity, while drought limits photosynthesis.…”

Section: Interactions Between N and Droughtmentioning

confidence: 99%

“…Other interactions between these two types of stress also occur. For example, N deposition tends to increase water use efficiency (WUE), but, during a severe drought, plants may lose the ability to utilize N, leading to a loss of biomass [77]. Some ecosystems experience a decline in above-and belowground biomass [24,79] and a loss of root functionality [79].…”

Section: Interactions Between N and Droughtmentioning

confidence: 99%

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Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Drewniak

Gonzàlez-Meler

2017

Forests

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Abstract:One of the biggest uncertainties of climate change is determining the response of vegetation to many co-occurring stressors. In particular, many forests are experiencing increased nitrogen deposition and are expected to suffer in the future from increased drought frequency and intensity. Interactions between drought and nitrogen deposition are antagonistic and non-additive, which makes predictions of vegetation response dependent on multiple factors. The tools we use (Earth system models) to evaluate the impact of climate change on the carbon cycle are ill equipped to capture the physiological feedbacks and dynamic responses of ecosystems to these types of stressors. In this manuscript, we review the observed effects of nitrogen deposition and drought on vegetation as they relate to productivity, particularly focusing on carbon uptake and partitioning. We conclude there are several areas of model development that can improve the predicted carbon uptake under increasing nitrogen deposition and drought. This includes a more flexible framework for carbon and nitrogen partitioning, dynamic carbon allocation, better representation of root form and function, age and succession dynamics, competition, and plant modeling using trait-based approaches. These areas of model development have the potential to improve the forecasting ability and reduce the uncertainty of climate models.

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Section: Interactions Between N and Droughtmentioning

confidence: 99%

Section: Interactions Between N and Droughtmentioning

confidence: 99%

Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Drewniak

Gonzàlez-Meler

2017

Forests

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“…Pengukuran dilakukan satu kali pada tanggal 26 Juli 2014 dengan interval 2 jam dimulai dari pukul 09:00, 11:00, 13:00, 15:00, 17:00 (Li et al, 2007;Liu et al, 2012).…”

Section: Pengukuran Konduktansi Stomata Harianunclassified

Pengaruh Cekaman Kekeringan terhadap Perilaku Fisiologis dan Pertumbuhan Bibit Black Locust (Robinia pseudoacacia)

Anggraini

Faridah

Indrioko

2016

Jurnal Ilmu Kehutanan

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Black locust (Robinia pseudoacacia) is a native species from North America and it has spread to Europe and Asia. Black locust is also one species used for land rehabilitation in semiarid and arid areas. However, adaptability of black locust on their distribution area is quite disturbing due to its invasive potential that tends to suppress the growth of native plants. The purpose of this study is to examine the effect of drought stress through watering volume and watering intervals treatments on physiological behavior and growth of black locust seedlings, and to analyze the level of black locust on drought tolerance through water use efficiency (WUE) character and chlorophyll content. The watering volumes are 30-40 % of field capacity representing drought conditions and 70-80 % of field capacity representing good water conditions, while the watering intervals are 1, 3 and 7 days. Trend analysis is used to analyze the data. The results indicate that the lower watering volume (30-40 %) and the longer the watering interval (for 7 days), the lower the photosynthesis and transpiration rate, stomatal conductance and growth (height, diameter, shoot dry weight and root) of plants, but the higher the WUE and chlorophyll content. Increasing WUE and chlorophyll content are two indicators indicating that black locust is able to adapt (tolerant) to drought stress situations. Therefore, the use of black locust for dry land reclamation requires special attention and careful strategy to avoid its invasive impact in the future.Keywords: black locust, drought, invasive species, water use efficiency, chlorophyll content. (Liu et al., 2013). Sementara itu, tanaman di luar daerah arid maupun semi arid juga sering mengalami defisit air pada siklus hidupnya (Chaves et al., 2002) yang penyebabnya termasuk perubahan signifikan intensitas dan frekuensi suhu bumi serta pola curah hujan, peningkatan suhu atau penurunan kelembaban yang cepat yang mengakibatkan kondisi defisit air Penurunan tekanan turgor yang bersamaan dengan meningkatnya asam absisat bebas pada daun menyebabkan penyempitan stomata (Nilsen dan Orcutt, 1996). Penutupan dan/atau penyempitan stomata menghambat proses fotosintesis, hal ini menyangkut transportasi air dalam tubuh tanaman dan menurunnya aliran karbondioksida pada daun (Nilsen dan Orcutt, 1996; Zlatev dan Lidon, 2012). INTISARI Black locust (Robinia pseudoacacia) merupakan tanaman asli Amerika Utara dan telah tersebar ke Eropa dan Asia serta menjadi salah satu spesies yang digunakan untuk rehabilitasi lahan semiarid dan arid. Walau demikian, kemampuan adaptasi black locust pada daerah persebarannya cukup meresahkan disebabkan jenis ini memiliki potensi invasif yang cenderung menekan pertumbuhan tanaman asli setempat. Tujuan penelitian ini adalah untuk mempelajari pengaruh cekaman kekeringan berupa volume penyiraman dan interval penyiraman terhadap perilaku fisiologis dan pertumbuhan bibit black locust, serta untuk menganalisis tingkat toleransi black locust terhadap kekeringan melalui karakter efisie...

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“…Variations in gas exchange levels led to different PNUE and WUE values WUE and PNUE, which represent the rate of nitrogen and water uptake in photosynthesis, are very closely related to gas exchange. WUE was enhanced by N supply under nonlimiting water conditions (Liu et al, 2013b), with NO 3 − -fed plants having a higher water uptake rate than NH 4 + -N-fed plants (Guo et al, 2002). We found that WUE increased in NO 3 − -N-fed and mixture-fed plants (except LJ43), but these effects were not significant.…”

Section: Numerous Effects Of Inorganic N On Various Cultivarsmentioning

confidence: 99%

Inorganic nitrogen fertilizers induce changes in ammonium assimilation and gas exchange in Camellia sinensis L.

Du¹,

Peng²,

Jiang³

et al. 2015

Turk J Agric For

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Effects of soil water and nitrogen availability on photosynthesis and water use efficiency of Robinia pseudoacacia seedlings

Cited by 85 publications

References 60 publications

Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Earth System Model Needs for Including the Interactive Representation of Nitrogen Deposition and Drought Effects on Forested Ecosystems

Pengaruh Cekaman Kekeringan terhadap Perilaku Fisiologis dan Pertumbuhan Bibit Black Locust (Robinia pseudoacacia)

Inorganic nitrogen fertilizers induce changes in ammonium assimilation and gas exchange in Camellia sinensis L.

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