Tree root distribution and activity are determinants of belowground competition. However, studying root response to environmental and management conditions remains logistically challenging. Methodologically, nondestructive in situ tree root ecology analysis has lagged. In this study, we tested a nondestructive approach to determine tree coarse root architecture and function of a perennial tree ...

Field CO2 production was related to soil carbon pools and ̄uxes determined by laboratory incubation of soils from agroecosystems designed to test the possibility of substituting biological for chemical inputs. Treatments included: conventional and organic-based row crops, woody and herbaceous perennial crops and historically tilled and never tilled successional ®elds. The CO2 ef ̄ux in corn and ...

Soil moisture conditions are critical for seed emergence in soils. As soils of Saemangeum reclaimed land coarse-textured, the soil may not be suitable upland cultivation due to low water holding capacity. This study was performed investigate rates sesame (Sesamum indicum L.), perilla (Perilla frutescens peanut (Arachis hypogaea and sorghum (Sorghum bicolor L.) under land. Three experiment condu...

[1] Understanding climate, vegetation, and soil controls on recharge is essential for estimating potential impacts of climate variability and land use/land cover change on recharge. Recharge controls were evaluated by simulating drainage in 5-m-thick profiles using a one-dimensional (1-D) unsaturated flow code (UNSAT-H), climate data, and vegetation and soil coverages from online sources. Soil ...

Invasive plants are recognized for their impressive abilities to withstand adverse environmental conditions however, all invaders do not express the similar abilities. Therefore, survival, growth, nutrient uptake and fecundity of two co-occurring, invasive Physalis species were tested under water and salinity stresses, and different soil textures in the current study. Five different water stres...

s and Publications 8 Student Bio 11 2nd Qtr 2004 Carbon Movement and Sequestration in SMC Type I Installations A.B. Adams, R.B. Harrison Ecosystem Science Division, University of Washington Seattle, Washington Introduction An information source for Douglas-fir growth response has been the Regional Forest Nutrition Research Project (RFNRP) initiated in 1969. Information for soils in the installa...

Mountains of Norway. Its Little Ice Age maximum occurred about 1750 when it deposited a well-defined end moraine. Since then it has retreated leaving a series of recessional moraines. All of these moraines have been dated lichenometrically by Matthews (see Matthews, 1992 for a comprehensive summary). We used this series of dated moraines to investigate the early stages of pedogenesis, the early...