首页> 美国政府科技报告 >Seasonal Variation in the Statistics of Photosynthetically Active Radiation Penetration in an Oak-Hickory Forest

【24h】

Seasonal Variation in the Statistics of Photosynthetically Active Radiation Penetration in an Oak-Hickory Forest

机译：橡树山核桃林光合有效辐射侵染统计的季节变化

获取原文

页面导航

摘要
著录项
相似文献
相关主题

摘要

The seasonal variability in the frequency distribution (FD) and higher order moments (e.g., standard deviation, skewness and Kurtosis) of photosynthetically active radiation (PAR) penetration in an oak-hickory forest were examined. In a leafless, wintertime forest the FD is unimodal and skewed. In a leafing forest, the FD is highly variable and is strongly skewed. This results from higher solar elevation angles enhancing PAR penetration and new, expanding leaves causing penumbral shade and scattering the incoming radiation. The FD of PAR in the fully-leafed canopy is unimodal in the upper canopy, bimodal below crown closure and unimodal in the subcanopy trunkspace. Low solar elevation angles and leaf senescence cause the FD of PAR in the autumnal canopy to be uniformly distributed, as is indicated by its low kurtosis. FDs of PAR also provide a means of estimating sunlit leaf area. Estimated values of sunlit leaf area below crown closure agree within 15% with theoretical estimates derived with a negative binomial distribution. (Author)

著录项

作者
Baldocchi, D.; Hutchision, B.; Matt, D.; McMillen, R.;
展开▼
作者单位

展开▼
年度 1986
页码 p.1-20
总页数 20
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Tree canopy; Radiation absorption; Statistical analysis; Seasonal variations; Forests; Photosynthesis; Reprints;

机译：树冠;辐射吸收;统计分析;季节变化;森林;光合作用;重印;

相似文献

外文文献
中文文献
专利

1. Seasonal Variation in Photosynthetically Active Radiation Interception and Radiation Use Efficiency in Green Gram [Vigna radiata (L.)Wilczek] in Lower Gangetic Plain of India [J] . Shrabani Basu, Pramiti K. Chakraborty, Rajib Nath Current Journal of Applied Science and Technology . 2020,第25期

机译：绿色克的光合活性辐射拦截和辐射使用效率的季节变化[Vigna Radiata（L.）Wilczek]在印度下难道平原
2. Seasonal balance and vertical pattern of photosynthetically active radiation within canopies of a tropical dry deciduous forest ecosystem in Mexico. [J] . Parker G, Tinoco Ojanguren C, Martinez Yrizar A, Journal of Tropical Ecology . 2005,第3期

机译：墨西哥热带干燥落叶林生态系统冠层内光合有效辐射的季节平衡和垂直模式。
3. Seasonal variation in the reflectance of photosynthetically active radiation from epicuticular waxes of Scots pine (Pinus sylvestris) needles [J] . Be?at Olascoaga, Eija Juurola, Paulo Pinho, Boreal Environment Research . 2014,第supplaB期

机译：苏格兰松树（Pinus sylvestris）针的表皮蜡的光合有效辐射的反射率的季节性变化
4. Deriving the fraction of photosynthetically active radiation absorbed by the boreal forest from a Landsat TM image [C] . Stephanie Brazeau, Richard Fournier, Pierre Y. Bernier, Remote Sensing in the Third Millennium: from Global to Local . 2001

机译：从Landsat TM影像中得出北方森林吸收的光合有效辐射的比例
5. A model for photosynthetically active radiation penetration in cotton canopies. [D] . Calderon, Vladimir Jose Alarcon. 2000

机译：棉花冠层中光合有效辐射穿透的模型。
6. Integrating Map Algebra and Statistical Modeling for Spatio-Temporal Analysis of Monthly Mean Daily Incident Photosynthetically Active Radiation (PAR) over a Complex Terrain [O] . Fatih Evrendilek 2007

机译：集成地图代数和统计模型对复杂地形上的月平均日入射光合有效辐射（PAR）进行时空分析
7. Comparison of seasonal and spatial variations of leaf area index and fraction of absorbed photosynthetically active radiation from Moderate Resolution Imaging Spectroradiometer (MODIS) and Common Land Model [O] . Y. Tian 2004

机译：中等分辨率成像光谱仪（MODIS）和普通陆模型中叶面积指数和叶片区域指数和叶片光学活性辐射分数的季节性和空间变化

Seasonal Variation in the Statistics of Photosynthetically Active Radiation Penetration in an Oak-Hickory Forest

摘要

著录项

相似文献

相关主题

期刊订阅