The characteristics of watershed protection forests in the Po Ko river basin in Kon Tum province

Abstract

Po Ko river is located in the western part of Kon Tum province, with a basin area of 316,676.2ha, accounting for 32.7% of the province’s natural area, of which the forest area is 164,685.4ha (RPH 64,052.4ha, RĐD 11,889.6ha, RSX 78.931,1ha), accounting for 17.7% of the total forest area of the province, with reserves of about 20.64 million m3, accounting for 24.8% of the total timber volume in the province (83.3 million m3). The broardleaf evergreen forest has the largest area of 110,044ha, accounting for 66.8% of the total forest area and accounting for 24.9% of the broardleaf evergreen forest area of the province. Bamboo forest has about 150.72 million bamboo of all kinds, accounting for 23.7% of total bamboo reserves in the province (637.1 million trees). The area of forest and forest land is unevenly distributed among district administrative units, of which 56,604ha are in Dak Glei, accounting for 34.4 of the total forest area; Tu Mo Rong (49,129ha, 29.8%), Dak Ha (23,677ha, 14.4%), Dak To (19,272ha, 11.7%). The structure of diameter distribution of broardleaf evergreen forest and coniferous forest species has a reduced distribution pattern, the largest number of trees at the smallest diameter, and decreases as the diameter increases. When the diameter of forest trees increases,
the density decreases, the diameter of 15 - 20cm and over, the density of forest trees decreases in the order of forest status: LRTX - G > LRTX - TB > LRTX -N > LRTX - PH and LK - G > LK - TB > LK - N > LK - PH.