半干旱牧区天然打草场生产力时空变化及对气候响应分析

毛平平,沈贝贝,丁蕾,朱晓昱,辛晓平,闫玉春,王旭,闫瑞瑞,徐丽君,陈宝瑞

Temporal and Spatial Variation of Productivity and Its Response to Climate in Semi-Arid Pasture of Forage Harvesting Area

MAO PingPing,SHEN BeiBei,DING Lei,ZHU XiaoYu,XIN XiaoPing,YAN YuChun,WANG Xu,YAN RuiRui,XU LiJun,CHEN BaoRui

表2 不同草原类型实际生产力与降水量的相关性统计表

Table 2 Statistical tables of correlation coefficients between actual productivity and precipitation for different grassland types

草地类型 Grassland type 相关性系数区间所占面积分配比 Area distribution ratio of correlation coefficients interval (%) 显著负相关 Negative correlation 不显著相关 Not significantly correlation 显著正相关 Positive correlation -1.000—-0.693*** -0.693—-0.575** -0.575—-0.456* -0.456—0.456 0.456—0.575* 0.575—0.693** 0.693—1.000*** 草甸草原 Meadow steppe 0.00 0.01 0.05 4.37 7.05 21.41 67.11 山地草甸 Mountain steppe 0.00 0.00 0.00 2.52 9.17 15.36 72.95 典型草原 Typical steppe 0.00 0.00 0.00 2.87 5.20 16.77 75.16 低地草甸 Lowland steppe 0.01 0.01 0.02 1.79 3.36 16.31 78.50 总计Total 0.00 0.01 0.02 3.09 5.45 18.04 73.39