Ozone mini-hole occurring over the Tibetan Plateau in December 2003

Bian, Jianchun; Wang, Gengchen; Hong-bin, Chen; Dong-lin, QI; Lü, Daren; Zhou, Xiuji

doi:10.1007/s11434-006-0885-y

Cited by 35 publications

(29 citation statements)

References 19 publications

(25 reference statements)

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“…Recent reports have shown that the ozone layer is attenuating in this region (Bian et al 2006). In addition, the IPCC (2001) have indicated that the ecosystems at high elevations will be disproportionally influenced by warming.…”

Section: Introductionmentioning

confidence: 99%

Short-term effects of experimental warming and enhanced ultraviolet-B radiation on photosynthesis and antioxidant defense of Picea asperata seedlings

Han

Liu

Yang³

2009

Plant Growth Regul

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Picea asperata is a dominant tree species in the southeast of the Tibetan Plateau of China. This paper studies the short-term effects of warming, enhanced UV-B (290-315 nm) and their combination on growth, photosynthesis and antioxidant defense system (AOS) of P. asperata seedlings. The experimental design included two levels of UV-B (ambient UV-B and enhanced by 30% UV-B) and two levels of temperature (ambient temperature and warmed temperature by 1.74°C). Although enhanced UV-B increased the efficiency of antioxidant defense system (AOS) including UV-B absorbing compounds, carotenoids, and antioxidant enzymes such as superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT) and peroxidase (POD), it induced over production of reactive oxygen species (ROS) and oxidative stress eventually. Moreover, enhanced UV-B reduced growth, chlorophyll content and net photosynthetic rate (A). Warming did not significantly affect dry mass accumulation of P. asperata seedlings while it accelerated stem elongation and stimulated A. Furthermore, warming alleviated the harmful effects of enhanced UV-B on the growth and photosynthesis. It also increased the antioxidant capacities of seedlings exposed to enhanced UV-B. Our results showed that the growth of P. asperata seedlings was inhibited by a combination of enhanced UV-B and warming, however, to some extent warming alleviated UV-B effects.

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Section: Introductionmentioning

confidence: 99%

Short-term effects of experimental warming and enhanced ultraviolet-B radiation on photosynthesis and antioxidant defense of Picea asperata seedlings

Han

Liu

Yang³

2009

Plant Growth Regul

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“…Studies have shown that ozone lows and even ozone mini-holes have emerged over the Tibetan Plateau in the past few decades (Zhou et al, 1995;Zou, 1996;Bian et al, 2006). The climate characteristics of ozone and the impacts of climate on total ozone over the Tibetan Plateau have been studied (see Zou, 1996;Ye and Xu, 2003;Liu et al, 2003 for details).…”

Section: Introductionmentioning

confidence: 99%

The Relationship between Total Ozone and Local Climate at Kunming Using Dobson and TOMS Data

Wang

2010

Atmospheric and Oceanic Science Letters

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“…It is a key species in the southeast of the Qinghai-Tibetan Plateau of China and widely used in reforestation programs at present (Liu 2002). Recent reports have showed that ozone layer is attenuated in Qinghai-Tibetian Plateau zone (Qi et al 2001;Bian et al 2006), and China is one of the three greatest nitrogen deposition regions (Li et al 2003). UV-B radiation and nitrogen nutrition are expected to increase simultaneously with future changes in global climate.…”

Section: Introductionmentioning

confidence: 99%

The effects of enhanced ultraviolet-B and nitrogen supply on growth, photosynthesis and nutrient status of Abies faxoniana seedlings

Yao

Liu

2009

Acta Physiol Plant

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Abies faxoniana is a key species in reforestation processes in the southeast of the Qinghai-Tibetan Plateau of China. The changes in growth, photosynthesis and nutrient status of A. faxoniana seedlings exposed to enhanced ultraviolet-B (UV-B), nitrogen supply and their combination were investigated. The experimental design included two levels of UV-B treatments (ambient UV-B, 11.02 KJ m -2 day -1 ; enhanced UV-B, 14.33 KJ m -2 day -1 ) and two nitrogen levels (0; 20 g N m -2 ). The results indicated that: (1) enhanced UV-B significantly caused a marked decline in growth parameters, net photosynthetic rate (Pn), photosynthetic pigments and F v /F m , (2) supplemental nitrogen supply increased the accumulation of total biomass, Pn, photosynthetic pigments and F v /F m under ambient UV-B, whereas supplemental nitrogen supply reduced Pn, and not affect biomass under enhanced UV-B, (3) enhanced UV-B or nitrogen supply changed the concentration of nutrient elements of various organs.

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Ozone mini-hole occurring over the Tibetan Plateau in December 2003

Cited by 35 publications

References 19 publications

Short-term effects of experimental warming and enhanced ultraviolet-B radiation on photosynthesis and antioxidant defense of Picea asperata seedlings

Short-term effects of experimental warming and enhanced ultraviolet-B radiation on photosynthesis and antioxidant defense of Picea asperata seedlings

The Relationship between Total Ozone and Local Climate at Kunming Using Dobson and TOMS Data

The effects of enhanced ultraviolet-B and nitrogen supply on growth, photosynthesis and nutrient status of Abies faxoniana seedlings

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