Cui Shengchao, Tu Ya, Sa La, et al. Relationship Between Community Characteristics and Species Diversity of Carex Duriuscula and Soil Physiochemical Properties in Hulunbuir Steppe[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 27-34.
DOI:
Cui Shengchao, Tu Ya, Sa La, et al. Relationship Between Community Characteristics and Species Diversity of Carex Duriuscula and Soil Physiochemical Properties in Hulunbuir Steppe[J]. Bulletin of Soiland Water Conservation, 2023, 43(5): 27-34. DOI: 10.13961/j.cnki.stbctb.2023.05.004.
Relationship Between Community Characteristics and Species Diversity of Carex Duriuscula and Soil Physiochemical Properties in Hulunbuir Steppe
[Objective] The relationships between community characteristics
species diversity
and soil physical and chemical properties of Carex duriuscula in Hulunbeier steppe were analyzed in order to provide a scientific reference for the protection and restoration of grassland ecosystems. [Methods] Ninety-five sample plots typifying the Hulunbeier C. duriuscula steppe were studied. The relationships between community characteristics of four community types and species diversity and soil physical and chemical properties were studied. [Results] ① With regard to the community characteristics
aboveground biomass
species richness
and Shannon-Wiener index were significantly different among the four community types. The community of C. duriuscula-annual and biennial herbs was the highest. With regard to the soil physical and chemical properties
total nitrogen and total phosphorus were the highest in the community of C. duriuscula-rhizome herbs. ② Soil organic carbon
total nitrogen
and total phosphorus were significantly positively correlated with above-ground biomass and below-ground biomass in the C. duriuscula-clump herbs community and the C. duriuscula-forbs community. ③ Soil organic carbon
total nitrogen
and total phosphorus were significantly negatively correlated with the Shannon-Wiener index
Simpson index
and Pielou index in the C. duriuscula-rhizome herbs community and the C. duriuscula-annual and biennial herbs community. [Conclusion] There were differences in community characteristics among the four community types in the C. duriuscula steppe. Soil organic carbon
total nitrogen
and total phosphorus were the main factors affecting the differences in community characteristics and species diversity.
关键词
Keywords
references
Irisarri J G N, Derner J D, Porensky L M, et al. Grazing intensity differentially regulates ANPP response to precipitation in North American semiarid grasslands [J]. Ecological Applications, 2016,26(5):1370-1380.
Wang J, Zhang R Q, Biyasi A, et al. Grazing reduces biomass fluctuations of rangeland plants: an 11-year comparison of grazing vs. enclosure [J]. Applied Ecology and Environmental Research, 2020,18(5):6309-6320.
Angassa A. Effects of grazing intensity and bush encroachment on herbaceous species and rangeland condition in Southern Ethiopia [J]. Land Degradation & Development, 2014,25(5):438-451.
Ho P, Azadi H. Rangeland degradation in North China: Perceptions of pastoralists [J]. Environmental Research, 2010,110(3):302-307.
Le Cain D R, Morgan J A, Schuman G E, et al. Carbon exchange and species composition of grazed pastures and exclosures in the shortgrass steppe of Colorado [J]. Agriculture, Ecosystems & Environment, 2002,93(1/2/3):421-435.
Zhao Haidi, Liu Shiliang, Dong Shikui, et al. Analysis of vegetation change associated with human disturbance using MODIS data on the rangelands of the Qinghai-Tibet Plateau [J]. The Rangeland Journal, 2015,37(1):77.
Zhu Yuanjun, Shan Dan, Wang Baizhu, et al. Floristic features and vegetation classification of the Hulun Buir Steppe in North China: geography and climate-driven steppe diversification [J].Global Ecology and Conservation, 2019,20: e00741.