Vegetation diversity pattern during spring season in relation to topographic and edaphic variables in sub-tropical zone

Botanical Studies

Table 8 Correlation and regression analysis of environmental variables with vegetation, diversity index (H'), species diversity index (SDI), species evenness (J), species richness (d) and species maturity index (MI)

Environmental variables	Average	SDE	VIFE	Correlation (r)	Correlation (r) with Diversity index (H')	Correlation (r) with species Diversity index (SDI)	Correlation (r) with Species Evenness (J)	Correlation (r) with Species richness (d)	Correlation (r) with Maturity index (MI)
pH	8.08	0.15	413.92	0.071	0.414**	0.390*	0.646^**	0.229	− 0.101
EC	0.12	0.04	286.72	0.641**	− 0.014	0.079	0.430**	− 0.229	0.463**
TDS	0.027	0.04	0.34	0.641**	− 0.014	0.079	0.430**	− 0.229	0.463**
CaCO3	7.98	0.88	50.28	− 0.182	-.405**	− 0.480**	− 0.385*	− 0.361*	0.198
OM	0.76	0.08	10.90	− 0.062	− 0.018	0.078	0.216	− 0.199	0.208
P	9.73	6.34	11.16	− 0.293*	0.313*	0.344*	0.294*	0.473**	0.113
K	108.28	13.54	55.12	0.312*	0.213	0.392*	0.226	0.176	− 0.261
Clay	4.41	2.57	12.71	− 0.151	− 0.165	− 0.192	− 0.242	− 0.149	0.505**
Silt	39.51	4.01	14.64	0.103	0.160	0.092	0.089	0.035	0.226
Sand	56.09	4.98	0.57	0.012	0.284	0.343*	0.234	0.214	0.014
MC	7.64	4.46	157.98	0.764***	− 0.304*	− 0.316	− 0.229	− 0.186	− 0.126
Altitude	637.20	167.17	15.31	− 0.495**	− 0.235	− 0.093	− 0.064	− 0.273	0.443**
Aspect	1.53	0.74	13.18	− 0.513**	− 0.450**	− 0.494**	− 0.700^*	− 0.212	− 0.529**