荒漠地衣对沙坡头人工植被固沙区的生态影响 [Ecological effects of desert lichens on Shapotou artificial vegetation zone, Ningxia, China]

Author:
王治军 魏鑫丽 陈玉惠 [Wang Z.-J., Wei X.-L. & Chen Y.-H.]
Year:
2017
Journal:
Mycosystema
Pages:
36(9): 1260–1270
Url:
thumb
[in Chinese with English abstract:] The ecological pattern dominated by microbiotic crust in the Shapotou area of the Tengger Desert is one of the unique ecological landscapes in natural vegetation of desert areas. Lichen, an important component of microbiotic crusts, plays a crucial role in influencing ecological changes. In this study, we investigated species composition and coverage of vascular plants and lichens, measured concentration of major nutrients in crust soil. The results show that the dominant lichens in microbiotic crusts are taxa of Collema and Endocarpon. We also observed roughly significant positive correlations between vascular plants and microbiotic crust converges, thickness of crust and concentration in soil nutrients, all which posing an increasing trend with ages of artificial vegetation. The consistent patterns of parameters of vascular plants, microbiotic crusts, lichens and soil nutrients clearly suggest a positive effect of microbiotic crusts on shallow-rooted vegetation and soil restoration, and provide a necessary theoretical basis for the artificial sand control and the full implementation of the desert bio-carpet engineering. Key words: desert, microbiotic crust, lichen, ecological succession.
Id:
32239
Submitter:
zdenek
Post_time:
Wednesday, 18 March 2020 11:56