Ecological process of vegetation restoration in Caragana mirophylla sand-fixing area

Abstract

Abstract: The occurrence and development of artificial vegetation after mobile sandy dunes being fixed by adopting straw check combining with seeding Caragana microphylla were studied. Especially the process of species invasion and the changes of community structure in 35 years were analyzed in detail. The results showed that the species richness of artificial community of C. microphylla increased, from 5 species (iN₂ years) to 23 species in 35 years. In the structure concerning plant lifeform, therophytes were in dominant position, while the ratio of therophytes to all plant species had a tendency of decrease. The rates of species number and the quantity of hemicryptophytes and geocryptophytes increased gradually. Species diversity and community evenness indexes increased and ecological dominance index decreased gradually. The similarity index of the artificial plant community to natural one increased with age. The changes of physical and chemical property of soil were also discussed.

Key words: Sandy land, Artificial plant community, Vegetation restoration, Ecological process, Caragana microphylla, genetic diversity, habitat condition, microsatellite markers, South Anhui

CAO Chengyou, JIANG Deming, Alamsa, LUO Yongming, KOU Zhenwu. Ecological process of vegetation restoration in Caragana mirophylla sand-fixing area[J]. Chinese Journal of Applied Ecology, 2000, 11(3): 349-354.

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