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›› 2006, Vol. 40 ›› Issue (S1): 157-160.

• 研究报告 • Previous Articles     Next Articles

An Evaluation Study on Four Energy Tree Species in Northwest Sandy Areas

WANG Yu-kui1, YAN Yan-xia1, LI Gang-tie2   

  1. 1. Paulownia Research & Development Center, SFA, Zhengzhou 450003, China;2. Inner Mongolia Agricultural University, Huhhot 010019, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-12-30 Published:2006-12-30

Abstract: Li-6400 portable photosynthesis system and calorimeter were used to carry through the test analysis of 4 planted energy tree species——Haloxylon ammodendron(HA), Hippophae rhamnoides(HR), Elaeagnus angustifolia(EA) and Calllgonum mon-golicum(CM) in Wulanbuh Desert, northwest China to study their characteristics of biomass, heat energy output, photosynthetic rate, evaporation rate and water use efficiency.The results show that all of the 4 species have the characteristics of high biomass, strong regeneration ability after stubble and high heat energy output.Take 6-year-old trees of the 4 species as an example, the biomass are above 8 t/hm2 averagely, and 23 t/hm2 for HA, 17 t/hm2 for HR, 12 t/hm2 for EA and 8.9 t/hm2 for CM respectively.The heat energy output is 435 GJ/hm2(HA), 322 GJ/hm2(HR), 222 GJ/hm2(EA) and 158 GJ/hm2 (CM).Taxis of the 4 species thus obtained: HA > HR >EA > CM according to their biomass and heat energy output and EA>HA> HR > CM according to WUE.The study also indicated that if psammophytes are selected as energy species, the regeneration ability after stubble and water ecophysiology character should be considered besides biomass and data of calorific value.

Key words: energy tree species, biomass, calorific value, water use efficiency

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