Measurement and analysis on understory light environment and canopy structure 
of Pinus tabulaeformis plantation in the Taiyue Mountain

doi:10.3969/j.issn.1000-2006.2014.02.033

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2014, Vol. 38 ›› Issue (02): 169-174.doi: 10.3969/j.issn.1000-2006.2014.02.033

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Measurement and analysis on understory light environment and canopy structure of Pinus tabulaeformis plantation in the Taiyue Mountain

ZHANG Yanlei¹,KANG Fengfeng¹,HAN Hairong^1*,YIN Xuezhe¹,CHENG Xiaoqin¹,LI Yong¹, ZHOU Bin¹,LIU Ke¹, SUN Jingjun²

1. Key Laboratory for Silviculture and Conservation of Ministry of Education, College of Forestry,Beijing Forestry University, Beijing 100083, China;
2. Qinyuan County Maquan Forestry Farm of Taiyue National Forest Bureau in Shanxi Province, Qinyua

Online:2014-03-10 Published:2014-03-10

Abstract

Abstract: In this paper, the understory light characters were measured and analyzed in Pinus tabulaeformis plantation(juvenile and mid-aged stands)with WinScanopy instrument in Mt. Taiyue, Shanxi province, China. The relationship between canopy structure and light characters were also analyzed. The results indicated that stand openness(9.68%-16.20%)decreased, whereas the LAI in the stand(2.000-3.784)increased with stand density increasing. The total PPFD above canopy ranged from 25.37 to 29.10 MJ/(m²·d)in P. tabulaeformis plantation. And the total PPFD under canopy deceased with the stand density ranged from 4.22 to 11.07 MJ/(m²·d). The light extinction ratio enlarged with the stand density increasing. And the light extinction coefficient of mid-aged stand(0.59)was stronger than that in the juvenile stand(0.27). The direct PPFD was the main component of total PPFD under canopy.

CLC Number:

S718

ZHANG Yanlei,KANG Fengfeng,HAN Hairong,YIN Xuezhe,CHENG Xiaoqin,LI Yong, ZHOU Bin,LIU Ke, SUN Jingjun. Measurement and analysis on understory light environment and canopy structure of Pinus tabulaeformis plantation in the Taiyue Mountain [J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2014, 38(02): 169-174.

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Measurement and analysis on understory light environment and canopy structure of Pinus tabulaeformis plantation in the Taiyue Mountain

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