Discussion on Soil Sampling Technology Based on the Experience of Yuanzegou Small Watershed

Based on the experience of soil sampling in Yuanzegou small watershed,several matters needing attention in soil field sampling are summarized.This paper focuses on the layout of sampling points,soil sample collection,soil sample preparation and matters needing attention about potential factors in soil field sampling,with a view to providing reference for undergraduates,master students or non-subject experimenters who are about to carry out experiments in this discipline.

Microfluidic hotspots in bacteria research:A review of soil and related advances

Soil science is an inherently diverse and multidisciplinary subject that cannot develop further without the continuous introduction and promotion of emerging technologies.One such technology that is widely used in biomedicine and similar research fields,microfluidics,poses significant benefits for soil research;however,this technology is still underutilized in the field.Microfluidics offers unparalleled opportunities in soil bacterial cultivation,observation,and manipulation when compared to conventional approaches to these tasks.This review focuses on the use of microfluidics for bacteria research and,where possible,pulls from examples in the literature where the technologies were used for soil related research.The review also provides commentary on the use of microfluidics for soil bacteria research and discusses the key challenges researchers face when implementing this technology.We believe that microfluidic chips and their associated auxiliary technologies provide a prime inroad into the future of soil science research.

Transition along gradient from warm to mesic temperate forests evaluated by GAMM

Aims The aim of the study was to discover what set of variables best explains the transition from warm to mesic forest vegetation.Based on various variables grouped into sets(geomorphological,ecological,structural,soil characteristics and chorological),six models were built and tested by generalized additive mixed models(GAMMs).We assumed that each set of variables has different explanatory power.Our aim was to compare the six different models(sets of variables),to test which model best explains the species turnover in forest communities along the transition between warm and mesic temperate forests and to try to find reasons for the different explanatory power of the models.Methods The research took place in the southern part of the Balkan Peninsula.Field sampling was done according to standard methods.The gradient from warm to mesic forests was defined as the turnover of species and evaluated by projection of samples on the first unconstrained DCA axis.Geomorphological,ecological,structural and soil characteristics,together with chorological sets of variables,were regressed on the turnover of species composition.Based on the five sets of variables,six models were constructed and tested by generalized additive mixed models.Important Findings Ecological conditions best explain the change of forest communities along the gradient;evolution and the development of vegetation reflected in chorotypes are also of high importance;geomorphology and structure seem not to change so dramatically and soil shows the least significant differences of all.Ecological variables are the most important set of variables in the transition between warm and mesic temperate forests but eco-evolutionary dynamics after the Pleistocene should also be taken into consideration.