Quantitative Analysis of Driving Factors of Grassland Degradation: A Case Study in Xilin River Basin, Inner Mongolia
Table 2
Results of BLR analysis for SG succession.
Variable
S.E. ()
Sig.
Exp ()
95.0% C.I. for
Lower
Upper
(a) During 1985~1998
.022
.003
<.001
1.017
1.017
1.028
AGI8β98
β.016
.004
<.001
.976
.976
.993
DR85
β.115
.012
<.001
.891
.832
.945
ALT
.122
.021
<.001
1.130
1.116
1.214
DS
β0.109
0.23
<.001
0.890
0.877
0.913
*SLP
*ORI
*NDVI85
*DW
Intercept
β1.912
.706
<.001
.148
β
β
(b) During 1998~2004
.040
.003
<.001
1.041
1.036
1.046
AGI(9β04)
.109
.002
.031
1.115
1.000
1.208
DR98
β.161
.021
<.001
.851
.800
.889
ALT
.191
.019
<.001
1.210
1.112
1.277
*SLP
*ORI
*NDVI98
*DW
*DS
Intercept
β14.411
.853
<.001
.000
β
β
Hosmer and Lemeshow Goodness-of-Fit Test: Chi-square =ββ1.802, Prββ>ββChi-square =ββ.213
. Maximum likelihood estimate of the parameter. S.E. (Ξ²): estimated standard error of the parameter estimate; Wald : Wald chi-squared statistic; Sig.: value of the Wald chi-squared statistic; : odd ratio.
*variables excluded by the logistic regression model after the run. C.I.: confidence intervals. The cut value is 500.