【摘要】 以科尔沁盐碱化草地为研究对象,采用施脱硫石膏+补播措施,研究了对盐碱化草地的修复效果,旨为盐碱化草地恢复与重建提供科学依据。结果表明:修复后的第三年(2019年)与自由放牧区(CK)和修复前(2017年)相比,草地群落的盖度、高度、密度和地上生物量均有显著提高;群落的丰富度指数和多样性指数均达到显著差异,均匀度指数达到显著差异;在牧草功能群方面,随着修复年限的推移,禾本科牧草和豆科牧草重要值达到56.67和10.88。修复措施改善了草地的生境条件,提高了草地的多样性、生物量和质量,是修复盐碱化草地的一种经济有效的手段。更多还原

【Abstract】 The restoration effect of adding desulphurization gypsum+reseeding on Saline-alkali grassland was studied in horqin salinized grassland to provide scientific basis for the restoration and reconstruction of salinized grassland.The results showed: the coverage, height, density and above-ground biomass of the grassland communities were significantly increased in the third year after restoration(2019) compared with the free grazing area(CK) and the pre-restoration(2017), while the changes of richness index and diversity index of the communities were not significantly different. In terms of forage functional groups, the important values of gramineous forage grass and leguminous forage grass reached 56.67 and 10.88 respectively over the years of restoration.The restoration measures improved the habitat conditions of grassland, and improved grassland diversity, biomass and quality, so it was an economical and effective method to restore saline-alkali grassland.更多还原