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Effects of Planting Density on Growth and Economic Benefit of Masson Pine Plantation / 造林密度对马尾松林分生长与效益的影响研究
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Effects of Planting Density on Growth and Economic Benefit of Masson Pine Plantation / 造林密度对马尾松林分生长与效益的影响研究
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Effects of Planting Density on Growth and Economic Benefit of Masson Pine Plantation / 造林密度对马尾松林分生长与效益的影响研究
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Journal Article
Effects of Planting Density on Growth and Economic Benefit of Masson Pine Plantation / 造林密度对马尾松林分生长与效益的影响研究
2011
Overview
The effects of planting density on growth and economic benefit of Masson pine (Pinus massoniana) plantation were analyzed with the data of 21-year-old planting density experiment stand (the planting densities were 1 667, 3 333, 5 000, and 6 667 trees·hm-2 respectively), the results showed that the planting density had significant effect on stand growth and structure. With the increase of stand density, the diameter at breast height (DBH), the single tree volume and the crown diameter decreased, but the ratio of tree height/DBH increased. However, the difference of these factors decreased with stand age increasing at 16-year-old. The stand volume and the timber yield increased with stand density increasing at the juvenile stage, but the difference of these factors decreased when stand entered middle-aged stage. For 21-year-old stand, the timber yields of the four treatments of planting density were 300.13, 309.94, 303.19 and 313.32 m3·hm-2 respectively. The percentages of small-diameter trees and the yield of
