[1]LIU Fang,HUANG Yaru,CHEN Hailing,et al.Comparative Study on Diurnal Variation Characteristics of Photosynthesis of Main Shrubs in Ulanbuh Desert in Inner Mongolia[J].Research of Soil and Water Conservation,2015,22(03):155-162.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 03
Page number:
155-162
Column:
Public date:
2015-06-28
- Title:
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Comparative Study on Diurnal Variation Characteristics of Photosynthesis of Main Shrubs in Ulanbuh Desert in Inner Mongolia
- Author(s):
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LIU Fang1, HUANG Yaru1, CHEN Hailing1, MA Yingbin1, GE Genba Tu1, DONG Xue1, ZHANG Xiaoyan2
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1. Experimental Center of Desert Forestry, CAF, Dengkou, Inner Mongolia 015200, China;
2. Water Resources Bureau of Siziwang County, Wulanchabu, Inner Mongolia 011800, China
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- Keywords:
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Ulanbuh Desert; shrub; photosynthetic characteristics; diurnal variations
- CLC:
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Q945.11
- DOI:
-
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- Abstract:
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The diurnal variations of photosynthetic characteristics of 14 species of drought-tolerant plants including Calligonum L., Tamarix and Caragana Fabr. were studied in Ulanbuh Desert. The results showed that: (1) diurnal variations of net photosynthesis rates of 14 plants were double-peak curves, the peaks were at 10:00 and 16:00, respectively, and had obvious siesta phenomena of photosynthesis, and the impact factor was mainly stomatal change. Net photosynthesis rates decreased in the order of Caragana korshinskii Kom > Caragana intermedia Kuang et H. C. Fu > Calligonum arborescens Litv. > Tamarix hohenackeri Bunge > Tamarix leptostachys Bunge > Calligonum leucocladum(Schrenk)Bunge > calligonum east > Tamarix austromongolica Nakai > Caragana roborovskyi Kom. > Tamarix ramosissima Ledeb. > Calligonum caput-medusae Schrenk > Tamarix elongata Ledeb. > Caragana stenophylla Pojark. > Calligonum rubicundum Bge; (2) Calligonum L. and Tamarix transpiration rate changes were single-peak curves, the peaks were at 10:00 and 14:00, respectively, the species of the Caragana Fabr. transpiration rate was double-peak curves, the peaks were at 10:00 and 16:00, respectively. Transpiration rates decreased in the sequence of Tamarix hohenackeri Bunge>Tamarix leptostachys Bunge > Tamarix austromongolica Nakai > Caragana korshinskii Kom > Caragana roborovskyi Kom. > Caragana intermedia Kuang et H. C. Fu > Tamarix ramosissima Ledeb. > Calligonum leucocladum(Schrenk) Bunge > Tamarix elongata Ledeb. > Calligonum arborescens Litv. > Caragana stenophylla Pojark. > Calligonum caput-medusae Schrenk > calligonum east > Calligonum rubicundum Bge; (3) diurnal variations of water use efficiency were double-peak curves, water use efficiency in the morning was higher than in the afternoon, the peak appeared at 10:00, water use efficiency decreased in the order of Calligonum arborescens Litv. > Calligonum rubicundum Bge > Tamarix elongata Ledeb. > Caragana korshinskii Kom > Calligonum leucocladum(Schrenk) Bunge > Calligonum caput-medusae Schrenk > calligonum east > Caragana intermedia Kuang et H. C. Fu > Tamarix ramosissima Ledeb. > Caragana stenophylla Pojark. > Tamarix austromongolica Nakai > Caragana roborovskyi Kom. > Tamarix leptostachys Bunge > Tamarix hohenackeri Bunge; (4) under the same environment conditions, Calligonum arborescens Litv., Tamarix elongata Ledeb. and Caragana korshinskii Kom had relatively strong ability to adapt the arid environment.