Analysis on Pattern Characters of the Two Artemisia ordosica  Communities by MSO

LI Hui-yong; LI Hui-qing; LI Qing-he; ZHANG Jing-bo; ZHANG Guo-qing; JIANG Ze-ping

The patterns of two semi-fixed Artemisia ordosica communities outside the oasis on the northeast of Ulanbuhe desert irrigated by Yellow River and well water were analyzed with the method of Multiscale Ordination (MSO). The results showed that: in the communities outside the oasis irrigated by Yellow River, A. ordosica was not only the dominated species in the communities (the importance value was 45.26%) but also the greatest contributor to the pattern. It occupied a proportion of 83.84% of the vegetation with the contribution rate as high as 0.889 6. In the communities outside the oasis irrigated by well water, the contribution of species to the pattern was different from the importance value to community. A. ordosica was the dominated species in the communities (the importance value was 47.41%), but its contribution to the pattern decreased very much. It was inversely for Ammopiptanthus mongolicus and Nitraria tangutorum whose contribution to the pattern was much higher than the importance value to community. Comparing with other pattern characters of the two communities, it showed that the pattern number outside the oasis irrigated by well water was more and the pattern intensity of A. ordosica was lower.

Analysis on Pattern Characters of the Two Artemisia ordosica Communities by MSO

1. Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China

2. Shanxi Water Resource and Hydraulics Research Academy, Taiyuan 030002, Shanxi, China

3. Desert Forestry Experimental Center, Chinese Academy of Forestry, Dengkou 015200, Inner Mongolia, China

Received Date: 2010-07-12

Available Online: 2012-04-13

Abstract: The patterns of two semi-fixed Artemisia ordosica communities outside the oasis on the northeast of Ulanbuhe desert irrigated by Yellow River and well water were analyzed with the method of Multiscale Ordination (MSO). The results showed that: in the communities outside the oasis irrigated by Yellow River, A. ordosica was not only the dominated species in the communities (the importance value was 45.26%) but also the greatest contributor to the pattern. It occupied a proportion of 83.84% of the vegetation with the contribution rate as high as 0.889 6. In the communities outside the oasis irrigated by well water, the contribution of species to the pattern was different from the importance value to community. A. ordosica was the dominated species in the communities (the importance value was 47.41%), but its contribution to the pattern decreased very much. It was inversely for Ammopiptanthus mongolicus and Nitraria tangutorum whose contribution to the pattern was much higher than the importance value to community. Comparing with other pattern characters of the two communities, it showed that the pattern number outside the oasis irrigated by well water was more and the pattern intensity of A. ordosica was lower.

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Reference (19)

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Analysis on Pattern Characters of the Two Artemisia ordosica Communities by MSO

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