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Short-Term Effects of Land Leveling on Soil Chemical Properties and Their Relationships with Microbial Biomass

^a Dep. of Crop, Soil, and Environmental Sciences, Univ. of Arkansas, 115 Plant Sciences Building, Fayetteville, AR 72701
^b Dep. of Crop, Soil, and Environmental Sciences, Univ. of Arkansas, P.O. Drawer 767, Marianna, AR 72360

View larger version (101K): [in a new window]   Fig. 1. Pre- and postleveling spatial distributions of soil pH, electrical conductivity (EC), and organic matter (OM) content from the 0- to 10-cm depth. The x direction is North and the y direction is West on the land surface. The eastern roughly one-half of the area was cut and the western roughly one-half of the area was filled.

View larger version (89K): [in a new window]   Fig. 2. Pre- and postleveling spatial distributions of soil P, K, Ca, and Mg contents from the 0- to 10-cm depth. The x direction is North and the y direction is West on the land surface. The eastern roughly one-half of the area was cut and the western roughly one-half of the area was filled.

View larger version (78K): [in a new window]   Fig. 3. Pre- and postleveling spatial distributions of soil S, Na, Fe, and Mn contents from the 0- to 10-cm depth. The x direction is North and the y direction is West on the land surface. The eastern roughly one-half of the area was cut and the western roughly one-half of the area was filled.

View larger version (107K): [in a new window]   Fig. 4. Pre- and post-leveling spatial distributions of soil Cu, Zn, and B contents from the 0- to 10-cm depth. The x direction is North and the y direction is West on the land surface. The eastern roughly one-half of the area was cut and the western roughly one-half of the area was filled.