Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Journal of Beijing Forestry University》 1985-01
Add to Favorite Get Latest Update

THE EFFECT OF DIRECTION OF SEEDLING ROWS ON LIGHT DISTRIBUTION IN TREE NURSERIES

Yuan Jiazhu He Qingtang  
Based on the geometric structures of seedling crown, the authors the oritically calculated durations of sunshine, transmittivity and light distribution, for crops with different directions and different leaf area indexes, during the summer half year (from the Spring Equinox to the Autumnal Equinox) in Beijing area. The results show that 1) light distribution is obviously affected by the row direction,The seedlings in east-west rows have 7 hours more in daily sunshine and 7.8 percent larger in average transmivity than those in south-north rows; and 2 ) the effect of the density of seedlings on the transmission condition is also remarkable, when the leaf area index Fm equals 5 , the amount of transmission light tends to be steady and is optimal for the seedling, growth The theoritical analyses appear to be consistent conditions observed in field.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
【Citations】
Chinese Journal Full-text Database 1 Hits
1 Cui Qiwn Zhu Jinwei (The Institute of Forestry and Pedology,Academia Sinica);THE TRANSMISSIVE AND REFLECTIVE THEORETICS OF LIGHTFOR VARIOUS STRUCTURES OF THE FOREST CANOPY[J];Acta Geographica Sinica;1981-02
【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Yao Yongkang;Liu Jiandong;Kang Zhongming and Sun Qixiang(Anhui AgricuItural University);ShadeEffect ofP1antation onBeach1andofMidd1e and LowerrReaches of the Yangtze River and ItsInfluence upon Yield of Intercrop[J];JOURNAL OF ANHUI AGRICULTURAL UNIVERSITY;1994-S1
2 Fang Ghangming Gao Rongfu (Forest Resource College);Energy Balance and Evapotranspiration Observation in A Chinese Pine Plantation[J];Journal of Beijing Forestry University;1988-02
3 Zhang Deshun Chen Youmin(Landscape Architecture Department);On Investigation and Analysis about Wild Flowers in Beijing Mountain Area[J];Journal of Beijing Forestry University;1989-04
4 Han Hairong;Jiang Yulong. Journal of Beijing Forestry University (2000)22(4)92~96[Ch,14 ref.]College of Resources and Environment, Beijing For. Univ., 100083,P.R.China.;Study on the light characteristics of artificial forest of \%Quercus variables.\%[J];JOURNAL OF BEIJING FORESTRY UNIVERSITY;2000-04
5 ZHANG Yi-ping~ 1; DOU Jun-xia~ 1, 3; YU Gui-rui~ 2; ZHAO Shuang-ju~ 1, 3; SONG Qing-hai~ 1, 3; SUN Xiao-min~ 2. 1 Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, 650223, P. R. China; 2 Institute of Geographic Sciences and National Resources Research, Chinese Academy of Sciences, Beijing, 100101, P. R. China; 3 The Graduate School of the Chinese Academy of Sciences, Beijing, 100039, P. R. China.;Characteristics of solar radiation and its distribution above the canopy of tropical seasonal rain forest in Xishuangbanna, Southwest China[J];Journal of Beijing Forestry University;2005-05
6 LI Ying nian,ZHAO Xin quan,CAO Guang min,SHI Sheng bo (Northwest Plateau Institute of Biology, the Chinese Academy of Sciences, Xining Qinghai 810001, China);The Study of Reflective Radiation and Surface Albedo of Alpine Meadow Vegetation[J];Acta Agrestia Sinica;2002-01
7 LI Ying-nian~1, ZHAO Liang~1, GU Song~2, DU Ming-yuan~3, YU Gui-rui~4, TANG Yan-hong~2, WANG Qin-xue~2, Tomomichi Kato~5, ZHAO Xin-quan~1 (1. Institute of Biology of the Northwest Plateau,Chinese Academy of Sciences,Xining,Qinghai Province 810001,China; 2. National institute for Environmental Studies, Tsukuba, 3050053, Japan; 3. National Institute of Agro-environmental sciences, Tsukuba, 3050053, Japan; 4. Insitute of Geographic Sciences andNatural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 5. Doctoral Program in Biological Sciences, University of Tsukuba, 3058577, Japan);Energy-Balance Features of the Alpine Meadows on the Haibei Area(Northern Shores of the Qinghai Lake)[J];Acta Agrestia Sinica;2003-04
8 ZHANG Hong-tao ~1,ZHU Chang-han ~2,ZHANG Qiang ~2 (1.National Satellite Meteorological Center,China Meteorological Administration,Beijing 100081,China; 2.National Climate Center,China Meteorological Administration,Beijing 100081,China);NUMERICAL MODELING OF MICROCLIMATE EFFECTS PRODUCED BY THE FORMATION OF THE THREE GORGES RESERVOIR[J];Resources and Environment in the Yangtze Basin;2004-02
9 CHEN Zheng-hong~1, WAN Su-qin~2, MAO Yi-wei~3( 1.Wuhan Institute of Heavy Rain, China Meteorological Administration, Wuhan 430074, China; 2.Yichang Meteorological Office, Yichang 443000, China; 3.Wuhan Meteorological Center Observatory, Wuhan 430074, China);ANALYSIS OF THE TEMPORAL AND SPATIAL DISTRIBUTION OF RAINFALL IN COMPLICATED TOPOGRAPHY AROUND THE THREE GORGES RESERVOIR AREA[J];Resources and Environment in the Yangtze Basin;2005-05
10 Zhao Guhua (Changchun Institute of Geography, Academia Sinica );A THERMOLOGY METHOD TO CALCULATE THE RATE OF PEAT ACCUMULATION[J];Acta Sedimentologica Sinica;1984-02
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved