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太岳山油松人工林冠下光环境特征与冠层结构(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2014年02期
Page:
169-174
Column:
研究简报
publishdate:
2014-03-24

Article Info:/Info

Title:
Measurement and analysis on understory light environment and canopy structure of Pinus tabulaeformis plantation in the Taiyue Mountain
Article ID:
1000-2006(2014)02-0169-06
Author(s):
ZHANG Yanlei1KANG Fengfeng1HAN Hairong1*YIN Xuezhe1CHENG Xiaoqin1LI Yong1 ZHOU Bin1LIU 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
Keywords:
Pinus tabulaeformis plantation light environment canopy structure LAI Taiyue Mountain
Classification number :
S718
DOI:
10.3969/j.issn.1000-2006.2014.02.033
Document Code:
A
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.

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Last Update: 2014-03-10