| Eco-physiological characteristics of Aneurolepidium dasystachys in Loess Plateau |
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| DOI：10.7606/j.issn.1000-7601.2004.03.27 |
| Key Words: Aneurolepidium dasystachys photosynthesis rate transpiration rate environmental (factor) |
| Author Name | Affiliation | | WANG Jing | Lanzhou Institute of Arid Meteorology,Chinese Meteorological Administration,Lanzhou 730020,China | | CHENG Ji-min | Northwest Sci-Tech University of Agriculture ＆ Forestry,Institute of Soil and Water Conservation,CAS,Yangling,Shaanxi 712100,China | | WAN Hui-e | Northwest Sci-Tech University of Agriculture ＆ Forestry,Institute of Soil and Water Conservation,CAS,Yangling,Shaanxi 712100,China | | FANG Feng | Lanzhou Institute of Arid Meteorology,Chinese Meteorological Administration,Lanzhou 730020,China |
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| Abstract: |
| The eco-physiological characteristics of the leaves of Aneurolepidium dasystachys were studied. The results showed that due to environmental influence, eco-physiological characteristics of Aneurolepidium dasystachys leaves changed regularly. The daily variation of photosynthesis rate was expressed as a two-humped curve and reached the top point at around 8∶30 and 16∶30, while the daily change of transpiration rate was a single-humped curve and reached the top point at around 8:30. Correlation and regression analysis showed that air humidity remarkably influenced photosynthesis rate, transpiration rate and stomatal conductance, and there was significant correlativity among them. The "midday reductio" of photosynthesis rate was mainly induced by non-stomatal factors. |
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