R: The national forest health evaluation system

fhes {forestHES}

R Documentation

The national forest health evaluation system

Description

Zhang & Lei (2014) proposed and developed a national forest health evaluation system at the forest stand level using analytic hierarchy process (AHP), has a high application value and practical significance.

Usage

fhes(c1, c2, c3, c4, c5, c6, c7, c8, c9, c10, c11, c12, c13, c14,
c15, c16, c17, c18, c19, c20, c21, L_8 = 3.2, U_8 = 6.4,
L_15 = 30, U_15 = 60, L_16 = 0.8, U_16 = 1.3, O1_16 = 1.15,
O2_16 = 1.25, L_17 = 5, U_17 = 8.5, O1_17 = 6.5, O2_17 = 7,
L_18 = 10, U_18 = 80, L_19 = 1.49, U_19 = 13.19, L_20 = 5,
U_20 = 30, L_21 = 80, U_21 = 200)

Arguments

`c1`	Tree diversity index
`c2`	Shrub diversity index
`c3`	Herb diversity index
`c4`	Storey quantity
`c5`	Tree size diversity index
`c6`	Age structure
`c7`	Canopy closure
`c8`	Average volume increment per hectare
`c9`	Bio-disaster ratio
`c10`	Non bio-disaster ratio
`c11`	Crown length ratio
`c12`	Crown fade ratio
`c13`	Foliage falling ratio
`c14`	Regeneration density
`c15`	Soil depth
`c16`	Soil density
`c17`	Soil pH
`c18`	Soil organic matter
`c19`	Soil total nitrogen
`c20`	Soil available phosphorus
`c21`	Soil available potassium
`L_8`	Lower limit of Average volume increment per hectare
`U_8`	Upper limit of average volume increment per hectare
`L_15`	Lower limit of average volume increment per hectare
`U_15`	Upper limit of average volume increment per hectare
`L_16`	Lower limit of soil density
`U_16`	Upper limit of soil density
`O1_16`	Effective range of soil density
`O2_16`	Effective range of soil density
`L_17`	Lower limit of soil pH
`U_17`	Upper limit of soil pH
`O1_17`	Effective range of soil pH
`O2_17`	Effective range of soil pH
`L_18`	Lower limit of soil organic matter
`U_18`	Upper limit of soil organic matter
`L_19`	Lower limit of soil total nitrogen
`U_19`	Upper limit of soil total nitrogen
`L_20`	Lower limit of soil available phosphorus
`U_20`	Upper limit of soil available phosphorus
`L_21`	Lower limit of soil available potassium
`U_21`	Upper limit of soil available potassium

Details

None

Value

`indexSystem`	index system
`legend`	legend
`index`	index
`coverted.Index`	coverted.Index
`weighted.Index`	weighted.Index
`unweighted.Criterion`	unweighted.Criterion
`weighted.Criterion`	weighted.Criterion
`evaluation`	evaluation results

Note

None

Author(s)

Zongzheng Chai

References

Zhang HR, and Lei XD. 2014. Health management techniques for typical forest types. Beijing: Publishing house of forestry, China Chai ZZ.2016.National forest health evaluation system at the forest stand level in Chinahttp://www.forest-soil.net/Upload/ueditor/file/20160514/1463221795322480.pdf

Examples

##forest health evaluation for singel sample plot
tree.singlefhes<-fhes(c1=0.67,c2=1.89,c3=2.04,c4=4,c5=2.04,c6=1,c7=0.3,
               c8=3.4839,c9=0.75,c10=0.15,c11=0,c12=0.75,c13=0.35,
               c14=2500,c15=53,c16=1.56,c17=5.49,c18=34.03,c19=2.05,
               c20=21.38,c21=91.67)
tree.singlefhes

##Assigned the threshold of some variables, according to specific
##realistic condition or research contents
tree.spefhes<-fhes(c1=0.67,c2=1.89,c3=2.04,c4=4,c5=2.04,c6=1,c7=0.3,
               c8=3.4839,c9=0.75,c10=0.15,c11=0,c12=0.75,c13=0.35,
               c14=2500,c15=53,c16=1.56,c17=5.49,c18=34.03,c19=2.05,
               c20=21.38,c21=91.67,
               L_18=15,U_18=90,L_19=2,U_19=14,
               L_20=8,U_20=40,L_21=60,U_21=120)
tree.spefhes

##forest health evaluation for multiple sample plot
tree.multiplefhes<-fhes(c1=c(0.67,0,0.68),c2=c(1.89,1.33,1.79),c3=c(2.04,1.91,2.19),
               c4=c(4,3,4),c5=c(2.04,1.47,2.19),c6=c(1,0,1),c7=c(0.3,0.95,0.9),
               c8=c(3.4839,3.1579,5.9231),c9=c(0.75,0,0.3),c10=c(0.15,0,0.09),
               c11=c(0,0,0),c12=c(0.75,0.07,0.84),c13=c(0.35,0.11,0.84),
               c14=c(833.33,833.33,2500),c15=c(53,59,43),c16=c(1.28,1.56,1.33),
               c17=c(5.49,5.91,5.27),c18=c(38.32,34.03,25.37),c19=c(2.05,1.04,1.27),
               c20=c(21.38,34.66,14.19),c21=c(86.67,80,91.67))
tree.multiplefhes

##More regulare method of forest health evaluation for multiple sample plot
data(testIndex)
tree.fhes<-fhes(c1=testIndex$c1,c2=testIndex$c2,c3=testIndex$c3,c4=testIndex$c4,
     c5=testIndex$c5,c6=testIndex$c6,c7=testIndex$c7,c8=testIndex$c8,
     c9=testIndex$c9,c10=testIndex$c10,c11=testIndex$c11,c12=testIndex$c12,
    c13=testIndex$c13,c14=testIndex$c14,c15=testIndex$c15,c16=testIndex$c16,
    c17=testIndex$c17,c18=testIndex$c18,c19=testIndex$c19,c20=testIndex$c20,
    c21=testIndex$c21)
tree.fhes
pie(table(tree.fhes$evaluation$grade))

[Package forestHES version 1.0-1 Index]