毛乌素沙化草地植被群落特征及物种多样性对不同生态修复措施的响应

doi:10.12160/j.issn.1672-5190.2022.01.011

Abstract

Abstract: [Objective] To assess the effects of various ecological restoration measures on vegetation community characteristics and species diversity in Mu Us desertified grassland. [Method] To restore the desertified grassland in Sulide Sumu, Uxin Banner, Ordos City, Inner Mongolia, using enclosure as control （Ⅳ）, the measures of fertilization （Ⅰ）, reseeding (Ⅱ), algae spraying （Ⅲ）, algae reseeding and seed dressing （Ⅴ）, and fertilization+reseeding （Ⅵ） were utilized. The responses to these ecological restoration strategies were assessed by monitoring the vegetation community characteristics and calculating the species diversity indexes. [Result] The average height of vegetation community in the treatment areas of fertilization （Ⅰ）, reseeding （Ⅱ）, algae spraying （Ⅲ）, algae reseeding and seed dressing （Ⅴ）, and fertilization+reseeding （Ⅵ） was significantly （P<0.05） higher than that in the control area （Ⅳ）. The vegetation community coverage, density and above ground biomass in the treatment area of algae reseeding and seed dressing （Ⅴ） were significantly （P<0.05） higher than those in the other five treatment areas. The treatment area of fertilization （Ⅰ） had the most plant species with a total of 20 species, while that of reseeding （Ⅱ） had the least with a total of 10 species. The Margarlef richness index and Shannon-Wiener diversity index in the treatment areas of algae spraying （Ⅲ）, fertilization （Ⅰ）, and algae reseeding and seed dressing （Ⅴ） were significantly （P<0.05） higher than those in the other treatment areas. [Conclusion] The vegetation community characteristics and species diversity in the desertified grassland were significantly affected by various restoration measures. The procedures involving nutrient input, such as algae spraying or dressing, and fertilization, had a significant short-term effect on the rapid restoration of desertified grassland. Plant species and species richness raised dramatically following restoration, and the vegetation communities became relatively complex.

Key words: desertified grassland, community characteristics, species diversity, ecological restoration

CLC Number:

S812.68

YIN Guo-mei, JI Chao, LIU Si-bo, YANG Feng-lan, ZHANG Ying, MU Zong-jie, ZHAO Yi-wen, MA Chun-mei, LU Peng-fei, ZHANG Jin, LIU Yong-lu. Responses of Vegetation Community Characteristics and Species Diversity to Different Ecological Restoration Measures in Mu Us Desertified Grassland[J]. Animal Husbandry and Feed Science, 2022, 43(1): 68-75.

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Responses of Vegetation Community Characteristics and Species Diversity to Different Ecological Restoration Measures in Mu Us Desertified Grassland

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