科尔沁沙地封育恢复过程中植物群落特征变化及影响因素

王明明,刘新平,何玉惠,张铜会,魏静,车力木格,孙姗姗

How enclosure influences restored plant community changes of different initial types in Horqin Sandy Land

WANG Ming-Ming,LIU Xin-Ping,HE Yu-Hui,ZHANG Tong-Hui,WEI Jing,Chelmge ,SUN Shan-Shan

表4 科尔沁沙地不同类型封育沙地植物群落生物量和物种丰富度与气候因子之间关系

Table 4 Relationships between plant community biomass and species richness with climatic factors in different habitats in different types enclosed sandy land in Horqin Sandy Land

气候因子 Climate factor	沙地 Sandy land	生物量 Biomass (g·m^-2)			物种丰富度 Spices richness
气候因子 Climate factor	沙地 Sandy land	方程 Equation	R²	p	方程 Equation	R²	p
年降水量 Annual precipitation (mm)	MD	y = -0.1x + 17.08	0.3	0.98	y = -0.35lg x + 13.34	0.03	0.26
	FD	y = 0.09x + 55.96	0.22	0.45	y = 14.78lg x - 19.67	0.15	0.10
	SG	y = 0.21x + 75.11	0.45	0.13	y = 0.19lg x + 13.50	0.08	0.79
生长季降水量 Growing season precipitation (mm)	MD	y = 0.03x + 8.39	0.13	0.66	y = -0.35lg x + 13.35	0.03	0.27
	FD	y = 0.09x + 58.26	0.21	0.48	y = 14.53lg x - 18.32	0.15	0.11
	SG	y = 0.17x + 93.17	0.32	0.28	y = 0.19lg x + 13.5	0.08	0.79
年平均气温 Annual average air temperature (℃)	MD	y = 1.2x² - 22.64x + 117.04	0.24	0.23	y = -0.35x + 13.34	0.03	0.26
	FD	y = 2.42x² - 39.89x + 234.26	0.42	0.06	y = -0.09x + 16.00	0.09	0.84
	SG	y = 2.65x² - 44.46x + 306.24	0.19	0.35	y = 0.19x + 1.5	0.08	0.79