County-Scale Spatial Distribution of Soil Enzyme Activities and Enzyme Activity Indices in Agricultural Land: Implications for Soil Quality Assessment

Figure 2

Spatial distribution patterns of soil physicochemical properties and enzyme activities and TEI in surface horizon of Changwu County.

(a) OM

(b) Total N

(c) Total P

(d) Total K

(e) Alkali-hydrolyzable N

(f) Available P

(g) Available K

(h) CEC

(i) Clay

(j) pH

(k) Invertase

(l) Urease

(m) Phosphatase

(n) Catalase

(o) Dehydrogenase

(p) TEI