Effect of grazing intensity on soil and plant δ15N of an alpine meadow

• Autorzy: Du Y. , Guo X. , Zhou G. , Cao G. , Li Y.
• Języki publikacji: EN

Abstrakty

EN

The mechanisms underlying the retention of inorganic N were still not well understood in an alpine meadow on the Tibetan Plateau as well as in other high-altitude meadow sites greatly grazed and disturbed. We conducted field soil and dominant species foliar nitrogen natural abundance of stable isotope ratios (δ¹⁵N) under four grazing intensities. It was demonstrated that soil δ¹⁵N decreased significantly from 5.83±0.20‰ to 2.17±0.48‰ at 0-10 cm with the elevation of grazing intensity. Grazing reduced the degree of ecosystem N openness. The δ¹⁵N value of surface soil was mainly affected by soil total nitrogen. Furthermore, the degree of nitrogen limitation increased with grazing elevation for sedge family and Gramineae family plants.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2017
• Tom: 26
• Numer: 3
• Opis fizyczny: p.1071-1075,fig.,ref.

Twórcy

autor

Du Y.

• Key Laboratory of Adaptation and Evolution of Plateau Botany, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, China, 810008

autor

Guo X.

• Key Laboratory of Adaptation and Evolution of Plateau Botany, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, China, 810008

autor

Zhou G.

• Bureau of Weihai Agriculture, Weihai, China, 264200

autor

Cao G.

• Key Laboratory of Adaptation and Evolution of Plateau Botany, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, China, 810008

autor

Li Y.

• Key Laboratory of Adaptation and Evolution of Plateau Botany, Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining, China, 810008

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Identyfikatory

DOI

10.15244/pjoes/67977