The Study Of Red Pine Adaptability In Maoershan

In this study, we used subordinate function values to evaluation the adaptability of a 12-year-old red pine provenance test stand at Maoershan. And studied the effect of the soil moisture and physical properties of site and microsite on red pine growth. The purpose was to select fine provenance red pine, and to establish the suitable site for red pine. Results showed that:There was obvious variation among of different provenance red pine in growth and adaptability. The provenance from Oneida County, Michigan (B) and Manistee County, Michigan (F) had much better adaptability. The height of B and F provenance were 4.09 m and 4.17 m, and the DBH were 5.3 cm and 5.1 cm. The two provenance were better than others in growth, but lower than the Pinus sylvestris, that is native trees of Northeast China.The survival of B and F provenance were 66.1%and 68.2%, they were higher than other provenance, and approach Pinus sylvestris (73.2%). Based on these results a preliminary report was prepared that B and F provenance were much better in seven provenance in red pine provenance test plantation stand at Maoershan Forest Farm.Variation was found among different slope in soil moisture and physical properties. The soil moisture content of down slope was the highest. It was higher 26.4%(/K0.05) and 19.6% (p<0.05) man upper slope and middle slope. The soil moisture and physical properties of different microsite was also variation significant. The soil moisture content of concave and stump were obvious higher than gentle slope without microsite (reference). The MC of concave was higher 57.2%(p<0.05) than reference, and stump was higher 11.2%(p>0.05).The MC of convex was lower 2.9%(p>0.05) than reference.The higher MC the worse for red pine growth. Red pine grown the best at upper slope with the lowest MC. Its height and was 4.3 m, was higher 3.1%(p>0.05) and 14.5%(p<0.05) than middle slope and down slope. Its DBH was 5.7 cm, was higher 11.8%(p<0.05) and 29.6% (p<0.05) than middle slope and down slope. Comparison with reference, convex was good for red pine growth, and concave and stump were bad for it. The height and DBH of red pine were higher than reference in convex(p>0.05). The height and DBH of red pine in concave were lower 24.9%(p<0.05) and 40.5%(p<0.05) than reference. The height and DBH of red pine in stump were little lower than reference (p>0.05).Taken altogether, the red pine provenance selectionthe should be the provenance from Oneida County, Michigan and Manistee County, Michigan in future red pine introduction work of this area. And upper slop and middle slope site with good drainage are suitable site for the establishment of red pine plantation in this area. Avoiding concave microsite which would produce timely waterlogging and close to stump microsite will benefit to red pine growth.