in order to study the effects of climate and geomorphology on the development of soils and their physico-chemical peroperties, two transects on the loess parent material were selected in two regions of golestanprovince. the regions were: huttan (maraveh tappeh area) and gorgan with aridic-thermic and xeric-thermic soil moisture and temperature regimes, respectively. four pedons in hutan and fiv...

In agroecosystems, effective straw return modes are one of the key practices for increasing soil fertility and carbon (C) availability. Although they improve quality, there is currently little information available regarding influence distinct with respect to potential organic (SOC) sequestration. this study, we established a five-year (2015–2019) field experiment in Mollisols Northeast China, ...

A large amount of nitrogen fertilizer is applied in maize planting Northeast China, but the recovery rate low, causing a series water and soil environmental problems farmland areas. Thus, based on isotope tracing technology combining field plot test with an situ microzone test, we carried out experiment under reduced conditions. Five different application levels were set: conventional (N1: 250 ...

“Black soils” recently proposed by the FAO Global Soil Partnership, include fertile soils, characterized a thick, dark-colored soil horizon rich in organic matter. This study addressed concept of “black soils”, terms taxonomic relationship their corresponding types existing classifications. Similarity studies were based on calculation distances between selected groups with matter–enriched horiz...

To understand the importance of plants in structuring the vertical distributions of soil nutrients, we explored nutrient distributions in the top meter of soil for more than 10,000 profiles across a range of ecological conditions. Hypothesizing that vertical nutrient distributions are dominated by plant cycling relative to leaching, weathering dissolution, and atmospheric deposition, we examine...

Soil structure and its change are good indicators for soil quality environmental stability, land-use is known to be an important factor that affects structure. We investigated the seasonal temporal variability in evaluated erodibility under different land-management practices Mollisols region of Northeast China. considered five modes sloping land (5°), i.e., bare (BL), natural vegetation restor...