Silvicultural treatment

Silviculture tending is important to improve the quality commercially valuable tree stands and to ensure that an adequate stocking of harvesting trees is achieved. Vines and climbing bamboo are known to significantly impede tree regeneration and growth. About 25,000 hectares of the total area of FMU 19B (57240 hectares) has been treated since 1995.

 

Technically, silviculture tending in KTSP is carried out in two phases where the first phase is carried out 6 months before harvesting operation and the second phase is carried out on years 10 after harvesting. The year-10 re-entry basically involves the elimination of climbing bamboos and other woody vines which compete the future crop trees for light and nutrients. Meanwhile, pre-harvest operation is done to ensure minimal damage on other Potential Crop Trees (PCT) during tree harvesting.

Silviculture tending (10 year re-entry) in compartment 26, FMU 19B

Silviculture tending (10 year re-entry) in compartment 26, FMU 19B

Table 1: Enrichment Planting and Silviculture Treatments in KTSP

Compartment No. (Year Planted) Enrichment Planting (ha) Main Species Planted Natural Forest Regeneration (ha) Net Area Silviculture Treatment (ha)
7 (1997) 32 Azadirachtaexcelsa 52 84
3 (1997 & 98) 7 Octomelessumatrana / Acacia spp. 7
8 (1997) 334 Azadirachtaexcelsa 398 732
12 (1997 & 98) 284 Azadirachtaexcelsa 624 908
9 (1998 &99) 110 Azadirachtaexcelsa 965 1,075
13 (1999) 35 Swieteniamacrophylla 350 385
10 (1999 & 2000) 114 Azadirachtaexcelsa 655 769
5 (2000 & 01) 65 Azadirachtaexcelsa 759 824
4/B1 (1999 – 01) 74
6 (2001) 101 Azadirachtaexcelsa 1,010 1,113
17 (2002) 40 A.excelsa  /Swieteniamacrophylla 484 524
20 (2002) 78 Swieteniamacrophylla 670 748
23 (2002) 39 Swieteniamacrophylla 346 385
18 (2002 – 03) 66 Swieteniamacrophylla 504 570
4/B3 (2001 – 02) 69
26 (2003) 92 Swieteniamacrophylla / D. lanceolata 1,340 1,432
4/B3 (2003 – 2004) 79
16 (2003) 91 Swieteniamacrophylla / D. lanceolata 910 1,001
34 (2003 – 2004) 112 Swieteniamacrophylla / Shorea spp. 918 1,030
35 (2004) 59 Swieteniamacrophylla / Shorea spp. 523 582
38 (2004) 38 Swieteniamacrophylla 326 364
4/B4 (2004 – 2005) 109
43 (2004) 54 Swieteniamacrophylla 438 492
46 (2004 – 2005) 81 Swieteniamacrophylla 723 804
33 (2005) 120 Swieteniamacrophylla 1,065 1,185
4/B5 (2005-2006) 108
36 (2005) 36 Swieteniamacrophylla 330 366
41 (2005) 121 Swieteniamacrophylla 845 966
45 (2005) 30 Swieteniamacrophylla 209 239
4/B6 (2006) 17 HopeaOdorata 141 158
51 (2006) 175 Swieteniamacrophylla 1,551 1,726
30 (2006) 1 Acacia mangiumsuperbulk 1
53 (2006) 1 Acacia mangiumsuperbulk 1
47 (2006) 48 Swieteniamacrophylla 367 415
4/B7 (2007) 24 HopeaOdorata 136 160
50 (2007) 218 Swieteniamacrophylla 1,032 1,250
57 (2007) 58 Swieteniamacrophylla 354 412
55 (2007) 64 Swieteniamacrophylla 452 516