fhes: The national forest health evaluation system

In Zongzheng/forestHES: Forest health evaluation system at the forest stand level in China

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

See Also

None

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))

Zongzheng/forestHES documentation built on May 10, 2019, 1:59 a.m.