3 Soil survey specifications 4 3.1 DSM survey checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Statistical inference and use of spatial covariates . . . . . . . . . . . . . . . 7 3.3 Generating a sampling plan . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.4 Data collection protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.5 Ex ante and ex...

Soil respiration is affected by distributions of roots and soil carbon substrates and by temperature and soil water content, all of which vary spatially and temporally. The objective of this paper was to compare a manual system for measuring soil respiration in a temperate forest, which had a greater spatial distribution of measurements (n=12), but poorer temporal resolution (once per week), wi...

As one of soil dynamics properties, soil moisture content is an important factor of soil fertility which counts for much to crop growth situation and scientific irrigation management. A design plan of regional spatial variation of soil moisture measurement was introduced. Its main job includes the use of differential GPS technology for each sampling points in farmland, collecting data of high-p...

This is a preliminary study of the depth distribution of (137)Cs radionuclides in cultivated anthrosol soil of a 15-year old peach tree plantation at the experimental field "Radmilovac" near Belgrade. Before planting, the soil was ploughed at the depth of 1 m. The soil had not been annually ploughed, irrigated and treated with mineral fertilizers for three years before sampling. Activity concen...

The concentration and distribution of Pb, Zn, Cu and Cr in the surface soil of three grassed swales located in the city of Beijing, Jiaxing and Shenzhen were studied in this paper. Evaluations on the risk of heavy metals were conducted based on the second level limit of soil environmental quality standard, using different indexes (i.e., single item, comprehensive items and potential ecological ...

Spatial soil sampling is an integral part of a survey aimed at describing spatial variability in properties. We propose considering the procedure as task optimal design. In practical terms, experiments can reduce experimentation costs, they allow researcher to obtain one set points. present design, based on fundamental idea selecting sample locations with most significant dissimilarities. The p...

The world needs around 150 Pg of negative carbon emissions to mitigate climate change. Global soils may provide a stable, sizeable reservoir help achieve this goal by sequestering atmospheric dioxide as soil organic (SOC). In turn, SOC can support healthy and multitude ecosystem benefits. To sequestration, researchers policy makers must be able precisely measure the amount in given plot land. m...

Variations of plant C: N: P stoichiometry could be affected by both some environmental fluctuations and plant physiological processes. However, the trade-off mechanism between them and their influencial factors were not understood completely. In this study, C, N, P contents and their stoichiometry of S. salsa's plant organs (leaves, stems, and roots), together with their environmental factors i...