Effects of soil management practices on stability and distribution of aggregates in Lou soil Effects of Water and Lead Stress on Soil Enzyme Activities Effects of long-term fertilization on soil black carbon accumulation in Lou soils Effect of wood vinegar on soil properties and plant growth Effects of long-term fertilization on carbon and nitrogen and enzyme activities of soil microbial biomass under winter wheat and summer maize rotation system Effects of long-term fertilizer management regimes on availability of soil micronutrient elements