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Vegetation characteristics and soil properties in grazing exclusion areas of the inner Mongolia desert steppe

International Soil and Water Conservation Research 2023年第3期11卷 549-560页

作者： Wenbang Gao Hongtao Jiang Shuai Zhang Chunxing Hai Baoyuan Liu Faculty of Geographical Science Beijing Normal UniversityBeijing100875China College of Geographical Science Inner Mongolia Normal UniversityHuhhot010022China Advanced Institute of Natural Sciences Beijing Normal University at Zhuhai519087China

In arid and semi-arid desert steppe areas,grazing exclusion with fencing is widely regarded as an effective strategy for restoring degraded vegetation and enhancing the quality of degraded *** this study,we hypothesized that grazing exclusion caused by fencing enhances both vegetation and soil properties,and that the longer an area is fenced,the more considerable the *** conducted an observational study wherein random sampling was utilized to select 9 plots fenced for ten or more years,25 plots fenced for four to nine years,25 plots fenced for one to three years and 29 free-grazing plots within an area of approximately 63,000 km^(2)of inner Mongolia desert steppe.A one-way ANOVA revealed no significant differences in the characteristics of grassland vegetation or soil properties between grasslands fenced for one to three years and free-grazing *** 4 years of fencing,noticeable increases in above-ground biomass,litter content,Simpson index,soil organic carbon,and available nitrogen were *** positive differences in vegetation coverage,height,species richness,soil available phosphorus,and available potassium were associated with plots with a minimum of 10 years of *** soil layer with the greatest difference in the fenced-in areas for soil organic carbon was at 0-25 *** available nitrogen and available phosphorus,fencing produced the most significant differences in the 0-20 cm soil layer,while for available potassium,fencing produced the most significant differences in the 0-30 cm soil ***,the fencing did not indicate any statistically significant differences in terms of clay,silt,and sand content in any soil *** data support our hypothesis that grazing exclusion improves both vegetation and soil properties,and that longer periods of grazing exclusion result in greater degrees of *** research offers technical guidance for the reasonable choice of fencing time across a vast area of the In

关键词： Fencingtime Soil restoration Vegetation inner mongolian desert steppe Grazing

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