山西亚高山草地物种多样性与生物量空间变化数据集  

A Dataset for Spatial Variation of Species Diversity and Biomass of Subalpine Grasslands in Shanxi Province,China

作　　者：徐满厚 赵梓彤[1] Xu,M.H.;Zhao,Z.T.(Institute of Geographical Science,Taiyuan Normal University,Jinzhong 030619,China;Institute of Carbon Neutrality,Taiyuan Normal University,Jinzhong 030619,China)

机构地区：[1]太原师范学院地理科学学院,晋中030619 [2]太原师范学院碳中和研究院,晋中030619

出　　处：《全球变化数据学报（中英文）》2022年第4期521-532,V0521-V0532,共24页Journal of Global Change Data & Discovery

基　　金：山西省科技厅(202103021224301);山西省教育局(2021L431);太原师范学院(CXCY2203)。

摘　　要：亚高山草地为野生动物和食草动物提供牧草,保护它们的完整性具有重要意义。作者于2016年7-8月,在黄土高原东部地区选择具有亚高山草地带的高海拔山地作为实验样地,从北向南一共选择了9个山地。在每个山地选择一块典型亚高山草地进行植物群落物种多样性和生物量调查,同时记录下亚高山草地的地理坐标。在样地中随机设置6个1 m2样方,用样方框调查每一个植物种的高度、多度、盖度、频度,计算群落α多样性指数;再以0.5°、0.45°为间隔分别将纬度、经度划分为5个梯度带,以100m为间隔将海拔划分为6个梯度带,计算群落β、γ多样性指数。最后,从6个物种多样性调查样方中,随机挑选5个作为植物生物量调查样方,在其中间位置设置0.2 m×0.2 m的小样方,采用齐地刈割法获取地上生物量,采用挖掘法获取地下生物量。该数据集包括:(1)山地名称及样地地理位置;(2)山西亚高山草地α多样性指数;(3)山西亚高山草地地理梯度带划分及其β多样性指数;(4)山西亚高山草地γ多样性指数;(5)山西亚高山草地生物量指标;(6)山西亚高山草地α多样性与生物量关系的数据。数据格式为.shp和.xlsx,数据量为41.2 KB(压缩为1个文件33.6 KB)。Subalpine grasslands provide grazing for wildlife and grazing animals,so protecting their integrity is important.From July to August in 2016,experimental plots were established in the east of the Loess Plateau of China in high mountains with subalpine grasslands.A total of nine mountains were selected from the north to the south in the eastern part of the Plateau.For each mountain,a typical subalpine grassland was selected and surveys of species diversity and biomass were conducted at the plant community level.Six 1 m?quadrats were designed in each plot for measuring the height,abundance,coverage,and frequency of each plant species,and then a-diversity indices were calculated.Next,in order to calculateβ-and y-diversity indices,latitude and longitude were divided into five intervals using intervals of 0.5°and 0.45°,respectively.Elevation was divided into six intervals of 100 m.Lastly,five of the six quadrats in each grassland were chosen and used to survey plant biomass.At the middle of biomass quadrats,0.2 m×0.2 m sub-quadrats were designed for measuring aboveground biomass by clipping aboveground plant parts and digging for belowground biomass.The resulting dataset includes subalpine grassland data for Shanxi province as follows:(1)the name of mountains and the geographical location of the experimental plots;(2)the indices of a-diversity;(3)the division of geographical intervals and the indices ofβ-diversity;(4)the indices of y-diversity;(5)the indices of biomass;and(6)the correlations between a-diversity and biomass in these grasslands.The data formats are.shp and.xlsx files with a data size of 33.6 KB for a compressed file.

关 键 词：亚高山草地 物种多样性 生物量 地理梯度 

分 类 号：S812[农业科学—草业科学]