1 Beijing Forestry University, Key Laboratory of Soil and Water Conservation and Desertification Combating, Minstry of Education, 100083; 2 Forestry Bureau of Yanqing Distract, 102100; 3 College of Resources and Environment, Beijing Forestry University,100083:Beijing, China
Abstract：To examine the effect of degradable ecomat on weed controlling in woodland on river-beach, weed coverage grades of different forests were investigated in the demonstration region of the Sina-Germany cooperation program in YanQing county. These forests were under three treatments in contrast: with ecomat, without ecomat and bare-land. The tree species were Pinus tabulaeformis, Robinia pseudoacacia, Acer truncatum, Quercus mongolica, Platycladus orientalis and Sabina procumbens. The results showed that the rate of weed controlling of degradable ecomat was over 82 1%; the rate was higher in forests where weeds were more vigorous; its effect on weed controlling was better for saplings and species with larger crown.
2004, Vol. 2 
