Foliar stable carbon isotope discrimination and nutrients contents in two desert plant species

• Autorzy: Zhao Liangju , Xiao Honglang , Liu Xiaohong , Li Jingxiu , Xiao Shengchun
• Języki publikacji: EN

Abstrakty

EN

Variation of foliar stable Carbon Isotope Discrimination (CID [Delta] [per mil]) and nutrient contents of Artemisia ordosica (Krasch) (semi-shrub species) and Caragana korshinskii (Kom.) (shrub species) were studied at the south-eastern margin of the Tengger Desert, China. Foliar CID [Delta], total phosphorus content (TP) and potassium content (K) in A. ordosica were markedly higher than in C. korshinskii while foliar total nitrogen content (TN) and water-use efficiency (WUE) (calculated from foliar CID[Delta]) in C. korshinskii were significantly higher than those in A. ordosica. There were significant and positive relationships between foliar CID [Delta], TN and TP contents (P <0.001) in C. korshinskii, while in A. ordosica a strong and significant positive correlation existed between CID [Delta] and K content (P <0.001). Based on WUE, TN, TP, and K contents, as well as their relationships, we may conclude that in arid environments, the survival of C. korshinskii profits from itshigher WUE, while the survival of A. ordosica from its higher TP and K contents in leaves. In addition, the correlations of foliar CID [Delta] values with TN and TP contents in C. korshinski and with K content in A. ordosica revealed that the water was one of the main factors limiting the absorption capacity for N and P in C. korshinskii, and for K in A. ordosica. While nutrient conditions were not the factors affecting the growth of C. korshinskii and A. ordosica in the study areas.

Słowa kluczowe

EN

arid regions; carbon isotope discrimination (CID [Delta]); nutrient contents

PL

Artemisia ordosica; bylica; Caragana korshinski; karagana; rośliny pustynne

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2007
• Tom: Vol. 55, nr 1
• Strony: 57--66
• Opis fizyczny: Bibliogr. 36 poz.,Rys., tab.,

Twórcy

autor

Zhao Liangju

• Laboratory of Watershed Hydrology and Ecology in Cold and Arid regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
• Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

autor

Xiao Honglang

• Laboratory of Watershed Hydrology and Ecology in Cold and Arid regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

autor

Liu Xiaohong

• Shapotou Desert Research and Experiment Station, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

autor

Li Jingxiu

• Laboratory of Watershed Hydrology and Ecology in Cold and Arid regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

autor

Xiao Shengchun

• Laboratory of Watershed Hydrology and Ecology in Cold and Arid regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China

• Laboratory of Watershed Hydrology and Ecology in Cold and Arid regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China,

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