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[1]Li Miaomiao,Ye Mao,Chen Weilong,et al.Response of Different Grassland Community Characteristics to Hydrothermal Factors in Altai Forest Area[J].Research of Soil and Water Conservation,2024,31(06):299-308.[doi:10.13869/j.cnki.rswc.2024.06.044]

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Response of Different Grassland Community Characteristics to Hydrothermal Factors in Altai Forest Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 06 Page number: 299-308 Column: Public date: 2024-12-10

Title:: Response of Different Grassland Community Characteristics to Hydrothermal Factors in Altai Forest Area

Author(s):: Li Miaomiao^1,2, Ye Mao^1,2, Chen Weilong^1,2, Pan Xiaoting^1,2, Zeng Guoyan^1,2, He Qingzhi^1,2, Zhang Xi^1,2; (1.School of Geographic Science and Tourism, Xinjiang Normal University, Urumqi 830054, China; 2.Xinjiang Key Laboratory of Arid Zone Lake Environment and Resources, Urumqi 830054, China)

Keywords:: plant richness; grassland type; elevation; mean annual precipitation; mean annual temperature

CLC:: Q948.15

DOI:: 10.13869/j.cnki.rswc.2024.06.044

Abstract:: [Objective]The aims of this study are to explore the response of plant species richness(SR)of different grassland communities to mean annual temperature(MAT), precipitation(MAP), and altitude in Altai Forest Region, and to provide scientific basis for the restoration and management of degraded grassland in this region. [Methods]Five grassland types within the range of 600～3 914 m in Altai Forest Region were selected as the research objects. The species lists of 165 sample plots were investigated using sample methods to analyze the changing characteristics of the family and genus species of various types of grassland plants. [Results](1)The composition of grassland species in Altai forest area of Xinjiang was mainly dominated by Asteraceae, Poaceae and Fabaceae, with Puccinellia, Taraxacum, Alchemilla, and Deschampsia as the dominant genera. However, the proportion of each family and genus in different types of grassland varied.(2)Species richness(SR)varied across grasslands, with mountain meadow grassland having the highest species richness(8.86)and alpine meadow(4.75)the lowest.(3)Differences in the response of species richness of different types of grassland to mean annual temperature(MAT)and precipitation(MAP)in the Altay forest region of Xinjiang were mainly due to differences in vegetation types and spatial variability of climatic factors, whereas their variability for elevation originated from the range of altitudinal gradients and large-scale climatic characteristics of the study area. [Conclusion]Differences in the response of different grassland types to temperature and precipitation are due to the spatial heterogeneity of vegetation types and temperature and precipitation; and the different hydrothermal conditions at different altitudinal gradients lead to some differences between species richness.

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Last Update: 2024-12-10