Model pendugaan cadangan karbon pada kelapa sawit (Elaeis guineensis Jacq.) umur 5 tahun di perkebunan kelapa sawit PT. Putri Hijau, Kabupaten Langkat.
3.
4.
5.
6.
7.
8.
9.
Rata-rata
11.70 m
10.92 m
8.91 m
9.32 m
10.50 m
10.72 m
10.30 m
10.09 m
1.77 m
1.66 m
1.27 m
1.23 m
1.34 m
1.57 m
1.60 m
1.45 m
109 cm
93.31 cm
84.39 cm
79.61 cm
103.50 cm
98.72 cm
81.84 cm
94.45 cm
Tinggi Bebas Pelepah
(Meter)
1.20 m
1.22 m
1.50 m
1.32 m
1.62 m
1.03 m
1.05 m
0.88 m
0.89 m
1.19 m
Diameter Batang (cm)
Tabel 2. Petak contoh 2
No
Tanaman
1.
2.
3.
4.
5.
6.
7.
8.
9.
Rata-rata
Tinggi Total
(Meter)
10.10 m
9.20 m
9.50 m
10.11 m
9.93 m
9.90 m
9.51 m
10.10 m
8.30 m
9.62 m
100.63 cm
90.12 cm
85.66 cm
116.24 cm
102.54 cm
84.39 cm
96.17 cm
100.63cm
101.91cm
97.58 cm
Tabel 3. Petak contoh 3
No Tanaman
1.
2.
3.
4.
5.
6.
7.
8.
9.
Rata-rata
Tinggi Total
(Meter)
8.52 m
8.20 m
10.10 m
11.80 m
11.20 m
10.30 m
6.80 m
8.90 m
9.70 m
9.50 m
Tinggi Bebas Pelepah
(Meter)
1.52 m
1.31 m
1.14 m
1.30 m
1.27 m
1.03 m
0.93 m
1.15 m
1.05 m
1.18 m
Diameter Batang (cm)
92.35 cm
88.85 cm
98.72 cm
88.21 cm
81.84 cm
112.42 cm
107.64 cm
98.72 cm
102.54 cm
96.81 cm
Lampiran 2. Hasil Perhitungan Biomassa Tanaman Kelapa Sawit
PC 1
Universitas Sumatera Utara
No
1
2
3
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
58.8
235.2
392
686
%Kadar Air
230.528
215. 481
346.381
792.39
Biomassa
17.791
74.552
87.817
180.160
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
48.3
273.7
421
743
%Kadar Air
177.284
153.231
261.298
592
Biomassa
17.418
108.083
116.524
242.025
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
42
238
371
651
%Kadar Air
142.672
287.747
364.257
795
Biomassa
17.307
61.380
79.912
158.599
PC
No
1
2
3
PC
No
1
2
3
Universitas Sumatera Utara
Lampiran 3. Output spss model alometrik terpilih penduga biomassa tanaman
sawit
A. Korelasi biomassa tiap bagian tanaman kelapa sawit
Correlations
log bio
Pearson Correlation
Sig. (1-tailed)
N
log dbh
log TBC
log bio
1.000
-.347
.839
log dbh
-.347
1.000
-.707
log TBC
.839
-.707
1.000
log bio
.
.180
.002
log dbh
.180
.
.017
log TBC
.002
.017
.
log bio
9
9
9
log dbh
9
9
9
log TBC
9
9
9
B. R-Sq dan Standard Eror
Model Summaryb
Std. Error of the
Estimat
Model
1
R
R Square
.909a
Adjusted R Square
.826
.768
e
Durbin-Watson
.14558413597906
7
.848
a. Predictors: (Constant), log TBC, log dbh
b. Dependent Variable: log bio
C. Tabel anova (F hitung dan signifikansi)
ANOVAb
Universitas Sumatera Utara
Model
1
Sum of Squares
df
Mean Square
Regression
.605
2
.302
Residual
.127
6
.021
Total
.732
8
F
Sig.
14.263
a. Predictors: (Constant), log TBC, log dbh
b. Dependent Variable: log bio
(a)
Universitas Sumatera Utara
.005a
(b)
Gambar. (a) histogram penyebaran sampel (data) ; (b) scatterplot biomassa
Lampiran 4. Output spss model alometrik terpilih penduga massa karbon tanaman
sawit
A. Korelasi massa karbon antara tiap bagian tanaman kelapa sawit
Correlations
log massa
Pearson Correlation
Sig. (1-tailed)
N
log dbh
log TBC
log massa
1.000
-.376
.859
log dbh
-.376
1.000
-.707
log TBC
.859
-.707
1.000
.
.159
.002
log dbh
.159
.
.017
log TBC
.002
.017
.
log massa
9
9
9
log dbh
9
9
9
log TBC
9
9
9
log massa
Universitas Sumatera Utara
B. Koefisien regresi
Coefficient Correlationsa
Model
1
log TBC
Correlations
Covariances
log dbh
log TBC
1.000
.707
log dbh
.707
1.000
log TBC
.049
.074
log dbh
.074
.220
a. Dependent Variable: log massa
C. R-sq dan standar error
Model Summaryb
Std. Error of the
Model
R
R Square
.124a
1
Adjusted R Square
.015
Estimate
-.125
Durbin-Watson
76.81791
.799
a. Predictors: (Constant), dbh2
b. Dependent Variable: Massa Karbon (kg)
D. Tabel anova (F hitung dan signifikansi)
ANOVAb
Model
1
Sum of Squares
Regression
Df
Mean Square
641.239
1
641.239
Residual
41306.934
7
5900.991
Total
41948.173
8
F
Sig.
.109
a. Predictors: (Constant), dbh2
b. Dependent Variable: Massa Karbon (kg)
Universitas Sumatera Utara
.751a
(a)
(b)
Gambar : (a) Histogram massa karbon ; (b) Normal P-P plot regresi
Lampiran 5. Foto kegiatan selama penelitian di PT. Putri Hijau
Universitas Sumatera Utara
(a)
(c)
(b)
(d)
Gambar : (a)(b) Proses penebangan tanaman kelapa sawit ; (c) hasil tebangan ;
(d)pengukuran diameter batang
Universitas Sumatera Utara
(e)
(f)
(g)
Gambar : (e) (f) Pengambilan sampel dari tiap bagian tanaman ; (g) sampel yang akan
diteliti dilaboratorium
Universitas Sumatera Utara
4.
5.
6.
7.
8.
9.
Rata-rata
11.70 m
10.92 m
8.91 m
9.32 m
10.50 m
10.72 m
10.30 m
10.09 m
1.77 m
1.66 m
1.27 m
1.23 m
1.34 m
1.57 m
1.60 m
1.45 m
109 cm
93.31 cm
84.39 cm
79.61 cm
103.50 cm
98.72 cm
81.84 cm
94.45 cm
Tinggi Bebas Pelepah
(Meter)
1.20 m
1.22 m
1.50 m
1.32 m
1.62 m
1.03 m
1.05 m
0.88 m
0.89 m
1.19 m
Diameter Batang (cm)
Tabel 2. Petak contoh 2
No
Tanaman
1.
2.
3.
4.
5.
6.
7.
8.
9.
Rata-rata
Tinggi Total
(Meter)
10.10 m
9.20 m
9.50 m
10.11 m
9.93 m
9.90 m
9.51 m
10.10 m
8.30 m
9.62 m
100.63 cm
90.12 cm
85.66 cm
116.24 cm
102.54 cm
84.39 cm
96.17 cm
100.63cm
101.91cm
97.58 cm
Tabel 3. Petak contoh 3
No Tanaman
1.
2.
3.
4.
5.
6.
7.
8.
9.
Rata-rata
Tinggi Total
(Meter)
8.52 m
8.20 m
10.10 m
11.80 m
11.20 m
10.30 m
6.80 m
8.90 m
9.70 m
9.50 m
Tinggi Bebas Pelepah
(Meter)
1.52 m
1.31 m
1.14 m
1.30 m
1.27 m
1.03 m
0.93 m
1.15 m
1.05 m
1.18 m
Diameter Batang (cm)
92.35 cm
88.85 cm
98.72 cm
88.21 cm
81.84 cm
112.42 cm
107.64 cm
98.72 cm
102.54 cm
96.81 cm
Lampiran 2. Hasil Perhitungan Biomassa Tanaman Kelapa Sawit
PC 1
Universitas Sumatera Utara
No
1
2
3
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
58.8
235.2
392
686
%Kadar Air
230.528
215. 481
346.381
792.39
Biomassa
17.791
74.552
87.817
180.160
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
48.3
273.7
421
743
%Kadar Air
177.284
153.231
261.298
592
Biomassa
17.418
108.083
116.524
242.025
Bagian Tegakan
Daun
Pelepah
Batang
TOTAL
Berat Basah (Kg)
42
238
371
651
%Kadar Air
142.672
287.747
364.257
795
Biomassa
17.307
61.380
79.912
158.599
PC
No
1
2
3
PC
No
1
2
3
Universitas Sumatera Utara
Lampiran 3. Output spss model alometrik terpilih penduga biomassa tanaman
sawit
A. Korelasi biomassa tiap bagian tanaman kelapa sawit
Correlations
log bio
Pearson Correlation
Sig. (1-tailed)
N
log dbh
log TBC
log bio
1.000
-.347
.839
log dbh
-.347
1.000
-.707
log TBC
.839
-.707
1.000
log bio
.
.180
.002
log dbh
.180
.
.017
log TBC
.002
.017
.
log bio
9
9
9
log dbh
9
9
9
log TBC
9
9
9
B. R-Sq dan Standard Eror
Model Summaryb
Std. Error of the
Estimat
Model
1
R
R Square
.909a
Adjusted R Square
.826
.768
e
Durbin-Watson
.14558413597906
7
.848
a. Predictors: (Constant), log TBC, log dbh
b. Dependent Variable: log bio
C. Tabel anova (F hitung dan signifikansi)
ANOVAb
Universitas Sumatera Utara
Model
1
Sum of Squares
df
Mean Square
Regression
.605
2
.302
Residual
.127
6
.021
Total
.732
8
F
Sig.
14.263
a. Predictors: (Constant), log TBC, log dbh
b. Dependent Variable: log bio
(a)
Universitas Sumatera Utara
.005a
(b)
Gambar. (a) histogram penyebaran sampel (data) ; (b) scatterplot biomassa
Lampiran 4. Output spss model alometrik terpilih penduga massa karbon tanaman
sawit
A. Korelasi massa karbon antara tiap bagian tanaman kelapa sawit
Correlations
log massa
Pearson Correlation
Sig. (1-tailed)
N
log dbh
log TBC
log massa
1.000
-.376
.859
log dbh
-.376
1.000
-.707
log TBC
.859
-.707
1.000
.
.159
.002
log dbh
.159
.
.017
log TBC
.002
.017
.
log massa
9
9
9
log dbh
9
9
9
log TBC
9
9
9
log massa
Universitas Sumatera Utara
B. Koefisien regresi
Coefficient Correlationsa
Model
1
log TBC
Correlations
Covariances
log dbh
log TBC
1.000
.707
log dbh
.707
1.000
log TBC
.049
.074
log dbh
.074
.220
a. Dependent Variable: log massa
C. R-sq dan standar error
Model Summaryb
Std. Error of the
Model
R
R Square
.124a
1
Adjusted R Square
.015
Estimate
-.125
Durbin-Watson
76.81791
.799
a. Predictors: (Constant), dbh2
b. Dependent Variable: Massa Karbon (kg)
D. Tabel anova (F hitung dan signifikansi)
ANOVAb
Model
1
Sum of Squares
Regression
Df
Mean Square
641.239
1
641.239
Residual
41306.934
7
5900.991
Total
41948.173
8
F
Sig.
.109
a. Predictors: (Constant), dbh2
b. Dependent Variable: Massa Karbon (kg)
Universitas Sumatera Utara
.751a
(a)
(b)
Gambar : (a) Histogram massa karbon ; (b) Normal P-P plot regresi
Lampiran 5. Foto kegiatan selama penelitian di PT. Putri Hijau
Universitas Sumatera Utara
(a)
(c)
(b)
(d)
Gambar : (a)(b) Proses penebangan tanaman kelapa sawit ; (c) hasil tebangan ;
(d)pengukuran diameter batang
Universitas Sumatera Utara
(e)
(f)
(g)
Gambar : (e) (f) Pengambilan sampel dari tiap bagian tanaman ; (g) sampel yang akan
diteliti dilaboratorium
Universitas Sumatera Utara