Increases in atmospheric C have resulted in concerns about global warming and interest in finding means to sequester atmospheric C through land management strategies. The purpose of this study was to (i) compare changes in mineral soil C after a 30-year interval and (ii) examine the role of inorganic-N, soil texture, and topography in these changes. Soil samples were collected at permanently id...

[1] Shallow landslides are a significant hazard in steep, soil-mantled landscapes. During intense rainfall events, the distribution of shallow landslides is controlled by variations in landscape gradient, the frictional and cohesive properties of soil and roots, and the subsurface hydrologic response. While gradients can be estimated from digital elevation models, information on soil and root p...

Aim The Tibetan Plateau accounts for about a quarter of the total land area of China and has a variety of ecosystems ranging from alpine tundra to evergreen tropics. Its soils are dominated by permafrost and are rich in organic carbon. Its climate is unique due to the influence of the Asian monsoon and its complex topography. To date, the carbon dynamics of the Tibetan Plateau have not been wel...

0022-1694/$ see front matter 2009 Elsevier B.V. A doi:10.1016/j.jhydrol.2009.07.047 * Corresponding author. Address: Department of F and Management, Oregon State University, 204 Peav 5706. Tel.: +1 541 737 8719; fax: +1 541 737 4316. E-mail address: [email protected] (L. H The links between soil water movement at the plot scale and runoff generation at the hillslope scale are highly no...

the aim of this research was to determine the effects of camphorosma monspeliaca species on soil nutrient elements in its habitat. for rangeland, ecological positive or negative effects of plant species on environment must carefully be examined before allowing their plantation in vast areas; on the other hand this species with their special characteristics have special effects on their surround...

We present a stochastic equation to model the erosion of topography with fixed inclination. The inclination causes the erosion to be anisotropic. A zero-order consequence of the anisotropy is the dependence of the prefactor of the surface height-height correlations on direction. The lowest higherorder contribution from the anisotropy is studied by applying the dynamic renormalization group. In ...

................................................................................................................................................... ii Preface...................................................................................................................................................... 1 Background ..............................................................................

Soil erosion implications on future food security are gaining global attention because in many areas worldwide there is an imbalance between soil loss and its subsequent deposition. Soil erosion is a complex phenomenon affected by many factors such as climate, topography and land cover (in particular forest resources, natural vegetation and agriculture) while directly influencing water sediment...

1.1 Statement of problem Estimation of soil moisture using microwave remote sensors holds great promise for many applications, including numerical weather prediction and agriculture. However, a scale disparity exists between the resolutions of future satellite-borne microwave remote sensor data (30-60 km) and the much finer scales at which soil moisture estimates are desired (~ 1 km). Hydrology...

This study highlights the impacts of the surface variability on Land-Atmosphere interactions using multi-scale atmospheric simulations with the Weather Research and Forecasting model capacities, coupled with NOAH land surface model and Kusaka et al. (2001) urban canopy model. The 30-m resolution numerical datasets for land-use and topography are respectively given by National Land-Cover Dataset...