Abstract
The changes of soil nitrogen properties, nitrogen-use properties and the biomass of Pleioblastus chino Makino were studied for 3 years under the treatment of underlayer-mowing and litter-removal. Aboveground biomass of P. chino was decreased by treatments. Belowground biomass of P. chino was not affected by mowing, but reduced by litter-removal. Total nitrogen content of topsoil was slightly decreased under the treatments in the half-shade site under Zelkova serrata. Soil mineral nitrogen content was decreased by mowing, and more decreased by litter-removal. Although the nitrate reductase activity (NRA) of plants were not different among treatments, it changed due to soil nitrate content and light condition. As NRA was increased in winter without canopy cover, autumn harvesting should be effective on the control of P. chino.
