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[Characteristics of Leontopodium leontopodioides leaf stochiometry with altitude and their relationship with soil nutrients in Qilian Mountains, Northwest China]. / 祁连山不同海拔火绒草叶片生态化学计量特征及其与土壤养分的关系.
Zhang, Xiao-Fang; Liu, Xian-de; Jing, Wen-Mao; Cao, Jian-Jun.
Afiliación
  • Zhang XF; College of Geography and Environmental Scien-ce, Northwest Normal University, Lanzhou 730070, China.
  • Liu XD; Gansu Province Qilian Mountains Water Resource Conservation Forest Research Institute, Zhangye 734000, Gansu, China.
  • Jing WM; Gansu Province Qilian Mountains Water Resource Conservation Forest Research Institute, Zhangye 734000, Gansu, China.
  • Cao JJ; College of Geography and Environmental Scien-ce, Northwest Normal University, Lanzhou 730070, China.
Ying Yong Sheng Tai Xue Bao ; 30(12): 4012-4020, 2019 Dec.
Article en Zh | MEDLINE | ID: mdl-31840445
Foliar stoichiometry provides information on the biotic and abiotic changes of environment. We examined the stoichiometric characteristics of plant leaves at different altitudes to understand how plants adapt to environmental changes. Foliar stoichiometry of Leontopodium leontopodioides at various altitudes (2400, 2600, 2800, 3000 and 3200 m) were analyzed in the Qilian Mountains of China. Across the altitude gradient, mean value of leaf carbon content (LC), nitrogen content (LN), and phosphorous content (LP) of L. leontopodioides was 401.27, 23.99 and 1.22 g·kg-1, respectively. The mean value of LC:LN, LC:LP and LN:LP was 16.8, 352.5 and 20.7, respectively. LC, LC:LN, LC:LP and LN:LP initially increased with increases in altitude, rea-ching the maximum at 2600 m, then decreased, reaching the minimum at 3000 m, and finally increased again. LP exhibited the opposite trend. LN demonstrated an initial decrease with altitude, reaching the minimum at 2800 m, followed by an increase at higher altitudes. LC did not correlate with LN, but was significantly negatively correlated with LP. LN was significantly positively correlated with LP. There was no correlation between LN and any other stoichiometry ratios. LP showed a significantly negative correlation with other stoichiometry ratios. LC:LN, LC:LP, and LN:LP were positively correlated with each other. Both soil total nitrogen and total phosphorus affected LC and LN, whereas LP was significantly negatively correlated with soil total phosphorus. The results suggested that the growth of L. leontopodioides in the study region was mainly limited by P availability.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Suelo / Altitud País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2019 Tipo del documento: Article País de afiliación: China Pais de publicación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Suelo / Altitud País/Región como asunto: Asia Idioma: Zh Revista: Ying Yong Sheng Tai Xue Bao Asunto de la revista: SAUDE AMBIENTAL Año: 2019 Tipo del documento: Article País de afiliación: China Pais de publicación: China