Characteristics of Robinia pseudoacacia water physiological ecology under different habitats in North Shaanxi gully areas of Loess Plateau

With locust (Robinia pseudoacacia), the main tree species in afforestation, as test material, this paper studied the characteristics of its water physiological ecology and productivity under four habitats, i. e. , sunny, shady, semi-sunny and semi-shady hillsides, in the North Shaanxi gully areas of...

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Bibliographic Details
Published inYing yong sheng tai xue bao Vol. 16; no. 7; p. 1205
Main Authors Shan, Changjuan, Liang, Zongsuo, Han, Ruilan, Hao, Wenfang
Format Journal Article
LanguageChinese
Published China 01.07.2005
Subjects
China
Ecosystem
Plant Transpiration
Robinia - metabolism
Robinia - physiology
Soil - analysis
Water - metabolism
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Summary:With locust (Robinia pseudoacacia), the main tree species in afforestation, as test material, this paper studied the characteristics of its water physiological ecology and productivity under four habitats, i. e. , sunny, shady, semi-sunny and semi-shady hillsides, in the North Shaanxi gully areas of Loess Plateau. The mean water content in 0 - 500 cm soil layer was 8.87% (shady), 8.06% (semi-shady), 7.62% (semi-sunny), and 6.96% (sunny), respectively. There was a significant discrepancy between shady, semi-shady, semi-sunny and sunnyhilisides (a 0.01), and the difference between shady, semi-shady and semi-sunny, as well as between semi-sunny and sunny hillsides was also significant (a 0.05) . Remarkable relationships were found between leaf RWC, locus WSD and soil water content (SWC) . The leaf RWC and locust water potential under sunny hillside were lower, but those under shady hillside were higher. The daily mean transpiration was in order of shady (4.07 microg x cm(-2) x s(-1)) > semi-shady (3.89 microg x
ISSN:1001-9332