Decomposition of organic matter (OM) in soil, affecting carbon (C) cycling and climate feedbacks, depends on microbial activities driven by C and nitrogen (N) availability. However, it remains unknown how decomposition of various OMs vary across global supplies and ratios of C and N inputs. We examined OM decomposition by incubating four types of OM (leaf litter, wood, organic matter from organ...

In blue carbon ecosystems, biomarkers and indicators have been developed to assess soil biogeochemical processes history. this study, we investigate soils determine if geochemical characteristics can predict microbial characteristics, secondly these two reveal novel information about formation alteration. First, phospholipid fatty acids (PLFAs) identified functional groups abundances. Microbes ...

Land degradation especially as a result of the rapid increase in demand and pressure population, have emerged one most important problems. Many model approaches, regarding land desertification, been developed continue to be on world. The MEDALUS (Mediterranean Desertification Use) which is famous models has for an environment assessment program contributed by 31 groups 10 countries 1999. This i...

Appropriate fertilizer application is an important management practice to improve soil fertility and quality in the red soil regions of China. In the present study, we examined the effects of five fertilization treatments [these were: no fertilizer (CK), rice straw return (SR), chemical fertilizer (NPK), organic manure (OM) and green manure (GM)] on soil pH, soil organic carbon (SOC), total nit...

pact B horizon, high in colloid. There is an obvious relationship between rate of height growth of trees and recognizable quantitative group combinations of factors, such as are summarized, for instance, in a specific soil type of specific slope and exposure. There is even more evident relationship between rate of height growth and specific soil profile characteristics. It has been possible to ...

Organic matter (OM) and pH may influence nanoparticle fate and effects in soil. This study investigated the influence of soil organic matter content and pH on the toxicity of ZnO-NP and ZnCl2 to Folsomia candida in four natural soils, having between 2.37% and 14.7% OM and [Formula: see text] levels between 5.0 and 6.8. Porewater Zn concentrations were much lower in ZnO-NP than in ZnCl2 spiked s...

The characteristics of rainfall-runoff are important aspects of hydrological processes. In this study, rainfall-runoff processes and soil moisture dynamics at different soil depths and slope positions of grassland with two different row spacings (5 cm and 10 cm, respectively, referred to as R5 and R10) were analyzed, by means of a solution of rainfall simulation experiments. Bare land was also ...

In this study, some habitat characteristics of Iranian rose (Hulthemia persica) were studied in Gonbad watershed in Hamedan providence, Iran. Soil samples were taken by a systematic randomized method at elevation 2000-2400 m above sea level. Samples were taken from 0-30 cm depth. In the laboratory, N, P, K% and organic matter (OC%), soil acidity (pH), conductivity (EC) and soil texture were det...