Changes in Land Use System and Environmental Factors Affect Arbuscular Mycorrhizal Fungal Density and Diversity, and Enzyme Activities in Rhizospheric Soils of Acacia senegal (L.) Willd.

Table 5

Significance level (F-values) of effects of different factors and their interactions on soil enzyme activities based on three-way analysis of variance (ANOVA).

Enzyme activities	Sites	Zones	Seasons	Zones × sites	Zones × seasons	Sites × seasons	Sites × zones × seasons
FDA (μg FDA/h/g of soil)	205.42^***	221.13^***	47.53^***	11.09^**	53.99^***	162.52^***	68.42^***
Dehydrogenase (μg INTF/h/g of soil)	433.18^***	261.46^***	1701.91^***	445.22^***	256.83^***	507.92^***	308.43^***
Acid phosphatase (μg pNPP/h/g of soil)	1.11^ns	266.08^***	2754.66^***	3.91^*	251.62^***	185.71^***	3.43^*
Alkaline phosphatase (μg pNPP/h/g of soil)	55.5^***	422.14^***	1307.31^***	674.78^***	457.23^***	564.61^***	153.71^***

∗, ^**, ^***, and ns indicate the level of significance at 𝑃<0.05, 0.001, 0.0001, and the absence of significance, respectively.