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| Effects of eco-mat covering the floor of <i>Pinus tabulaeformis</i> plantation on the tree growth and photosynthetic properties |
| Hao Yirong, Ma Lvyi, Liu Ping |
| College of Resources and Environment, Beijing Forestry University, 100083, Beijing, China |
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Abstract After the floor of the Pinus tabulaeformis plantation was covered with the eco-mat for 2 growing seasons, some growth and photosynthetic parameters were checked. The result indicates that the tree growth and survival rate increased to some extent due to the increasing of soil moisture contents by covering the floor with the eco-mat, and the soil moisture contents of 0～20cm was 9.56%～104.17% higher than that of CK ; the survival rate increased by 5.1% and the annual growth of the treated tree diameter was 58.5% higher than CK; the daily maximum photosynthetic rate and the Pn in the photosynthesis-saturated point increased by 30% and 10.6%～44.3% respectively compared with the CK; the Tr and Cond increased to some extent, while the light compensation points and the water-consumption efficiencies of the trees between the treated and CK were not different from each other remarkably.
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Received: 10 January 2005
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