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Scientia Silvae Sinicae ›› 2012, Vol. 48 ›› Issue (10): 63-69.doi: 10.11707/j.1001-7488.20121011

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Analysis on Seedling Functional Traits of 7 Wild Fruit Tree Species on the Northern Slope of Tianshan Mountains

Xu Qinghua1, Zang Runguo1, Ding Yi1, Xu Zheng2, Diao Yongqiang2, Sun xia3   

  1. 1. Key Laboratory of Forest Ecology and Environment of State Forestry Administration Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry Beijing 100091;2. Yili Academy of Forestry Yining 835000;3. Xinjiang Agriculture University Urumqi 830052
  • Received:2011-11-29 Revised:2012-05-05 Online:2012-10-25 Published:2012-10-25

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Abstract:

Plant functional traits can reflect their adaptability to environment and their ability of utilizing various resources. The major functional traits of 7 wild fruit tree species in the northern slope of Tianshan Mountains in Xinjiang were measured and analyzed. The functional traits include specific leaf area (SLA), wood density, thickness of leaf and bark, and the N, P, K contents in roots, leaves and stems. The results showed that Malus sieversii had the lowest wood density among the 7 tree species, while Zizyphus jujuba var. spinosa had the highest wood density and SLA, but the lowest leaf and bark thickness among the 7 tree species. Juglans regia had the smallest SLA, but the highest bark thickness among the 7 tree species. The SLA was significantly and positively correlated with leaf N content (P＜0.05). The nutrient contents in leaves, stems and roots were significantly different among the 7 tree species except P in stems. Z. jujuba var. spinosa and Amygdalus ferganensis had higher nutrients contents in the three organs than the other tree species, while J. regia and Crataegus sanguinea were lower nutrients contents in the three organs than the other tree species. The average leaf nitrogen content of the 7 tree species was 28.4 mg·g-1, which was higher than the average value for terrestrial plants worldwide. The average leaf phosphorus content of the 7 tree species was 2.20 mg·g-1, which was higher than the average value for plants in China, but close to the average value for terrestrial plants worldwide. The studied wild fruit tree species could be categorized into three types according to their nutrients utilization efficiencies: (1) low efficiency type: A. ferganensis and Z. jujube var. spinosa; (2) middle efficiency type: M. sieversii, Prunus divaricata and Armenioca vulgaris; (3) high efficiency type: J. regia and C. sanguinea.

Key words: northern slope of Tianshan Mountains, Malus sieversii, Juglans regia, Armeniaca vulgaris, Crataegus sanguinea, Zizyphus jujuba var. spinosa, Amygdalus ferganensis, Prunus cerasifera, plant functional traits

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