Ten provinces with most forest land: 1998 - 2004   1998     Rank Provinces Area(sq.km.) % 1 Chiang Mai 14,060 10.84 2 Tak 11,492 8.86 3 Kanchanaburi 10,528 8.12 4 Mae Hong Son 8,767 6.76 5 Lampang 7,835 6.04 6 Nan 4,792 3.69 7 Chiang Rai 3,819 2.94 8 Uttaradit 3,017 2.33 9 Chaiyaphum 3,011 2.32 10 Surat Thani 3,011 2.32   Whole Kingdom 129,722 100   2000     Rank Provinces Area(sq.km.) % 1 Chiang Mai 16,448 9.67 2 Tak 13,504 7.94 3 Kanchanaburi 11,869 6.98 4 Mae Hong Son 11,433 6.72 5 Nan 8,926 5.25 6 Lampang 8,901 5.23 7 Chiang Rai 5,239 3.08 8 Uttaradit 4,582 2.69 9 Phrae 4,427 2.60 10 Loei 4,012 2.36   Whole Kingdom 170,111 100   2004     Rank Provinces Area(sq.km.) % 1 Chiang Mai 15,691 9.36 2 Tak 12,670 7.56 3 Kanchanaburi 11,630 6.94 4 Mae Hong Son 11,128 6.64 5 Lampang 8,601 5.13 6 Nan 8,497 5.07 7 Chiang Rai 5,101 3.04 8 Uttaradit 4,443 2.65 9 Loei 4,280 2.55 10 Phrae 4,264 2.54   Whole Kingdom 167,591 100 Souce : The Royal Forestry Department, Ministry of Agriculture and Cooperatives Compiled by : Statistical Forecasting Bureau,  National Statistical Office