邻近的灌木丰度测量

邻近的灌木丰度测量

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Initial contribute: 2018-12-04

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Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
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Application-focused categoriesNatural-perspectiveLand regions

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邻近的灌木丰度测量

    1)当灌木比最适宜的周边灌木的高度矮时,灌木指数为:


式中,ai是在那一年中一个周边灌木种或个体i的丰度;hi是在那一年中一个周边灌木种或个体i的最大高度;D是那一年中道格拉斯冷杉树苗的最大高度;O是那一个年最佳周边高度;N时是那一个里周边灌木种的数量;W是加权系数。

2)使用邻近距离来表示的指数:


式中,N是邻近区域中种或个体植物的数量;ai是指邻近区域中种i的丰度或个体植物i的多少;di是指从道格拉斯冷杉的茎干到种i或个体植物i的冠顶的最近距离;r是邻近区域的半径。

3)用角分布表示的指数:

 

式中,A是指邻近区域的灌木的丰度;AD是灌木的角分布。

 

 

参考文献

   Wagner R GRadosevich S R:用邻近法定量分析俄勒冈州海岸森林中的种群竞争。Ecological Applications199883

How to Cite

《资源环境数学模型手册》 (2018). 邻近的灌木丰度测量, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/78c2e3b7-9f2e-412b-9865-822320800651
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History

Last modifier : 
XiaoYu He
Last modify time : 
2020-12-28
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Contributor

Initial contribute: 2018-12-04

Co-contributor(s)

Authorship

Affiliation:  
岳天祥编著
Email:  
yue@lreis.ac.cn
Homepage:  
View
Is authorship not correct? Feedback

History

Last modifier : 
XiaoYu He
Last modify time : 
2020-12-28
Modify times : 
View History

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