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[1]AN Yun,DING Guo-dong,LIANG Wen-jun,et al.Effects of Thinning on the Growth and the Development of Undergrowth of Pinus tabulaeformis Plantation in Rocky Mountain Area of North China[J].Research of Soil and Water Conservation,2012,19(04):86-90.

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Effects of Thinning on the Growth and the Development of Undergrowth of Pinus tabulaeformis Plantation in Rocky Mountain Area of North China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 04 Page number: 86-90 Column: Public date: 2012-08-20

Title:: Effects of Thinning on the Growth and the Development of Undergrowth of Pinus tabulaeformis Plantation in Rocky Mountain Area of North China

Author(s):: AN Yun, DING Guo-dong, LIANG Wen-jun, GAO Guang-lei, HE Yu, WEI Bao, BAO Yan-feng, BAO Biao; Key Laboratory of Soil and Water Conservation and Combating Desertification, Ministry of Education, College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China

Keywords:: Pinus tabulaeformis plantation; thinning; stand growth; undergrowth vegetation; plant diversity; biomass

CLC:: S753.7

DOI:: -

Abstract:: Thinning is one of the main forest measures. Studying its effects on forest ecosystems is significant to the sustainable development of forest ecosystems. The effects of thinning intensity with four different treatments of 46.6%, 56.2%, 67.1% and 0 (control group) on the undergrowth were carried out in the four Pinus tabulaeformis stands in Forest Bureau of Mulanweichang, Hebei Province. Through vegetation community investigation, the growth of forest and undergrowth vegetation after different intensities of thinning were studied. The results showed: the DBH, height, crown length and biomass of the tending group were significantly higher than those of the control group, and they increased with the thinning intensity, but stock volume of per unit area decreased with thinning intensity. Light, medium thinning could increase species, Gleason index, Shannon-Wiener index and Pielou index of the undergrowth vegetation, but the species of the undergrowth vegetation wouldn’t increase after heavy thinning. This phenomenon belonged to ’medium disturbance hypothesis’. The composition of dominant species of the four undergrowth vegetation varied after different intensities of thinning. The biomass of undergrowth vegetation increased with thinning intensity. All in all, reasonable thinning can promote the growth of forest and development of undergrowth vegetation. The reasonable thinning intensity of this study area should be about 56.2%.

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