Land degradation index of tropical forest landscape in Batang Toru watershed using spatial analysis

4th International Conference of Indonesian Society for Remote Sensing

物理学;能源学

Samsuri^1 ; Jaya, I.N.S.^2 ; Kusmana, C.^3 ; Murtilaksano, K.^4

Department of Forest Management, Forestry Faculty, University of Sumatera Utara, Kampus USU Padang Bulan, Medan, Indonesia^1

Department of Forest Management, Faculty of Forestry, Bogor Agriculture University, Kampus IPB Darmaga, Bogor, Indonesia^2

Department of Silviculture, Faculty of Forestry, Bogor Agriculture University, Kampus IPB Darmaga, Bogor, Indonesia^3

Department of Watershed Management, Faculty of Agricultural, Bogor Agriculture University, Kampus IPB Darmaga, Bogor, Indonesia^4

关键词: Chemical and physical properties;    Distribution characteristics;    Forest degradation;    Forest ecosystem;    Land degradation;    Likert scale;    Spatial analysis;    Tropical forest landscapes;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/280/1/012008/pdf
DOI  :  10.1088/1755-1315/280/1/012008

来源: IOP

【 摘 要 】

Forest degradation and deforestation have reduced the functions of forest ecosystem in Batang Toru watershed landscape. The degree of land degradation rate can be minimized by restoring the functions of forest ecosystem. Data concerning the degree of land degradation is needed to restore the functions of forest ecosystem. This research aims to obtain spatial distribution characteristics of land as well as land degradation index in Batang Toru watershed landscape. Land degradation was determined by using 3 variables, namely soil chemical and physical properties, as well as erosion type which occur in the site. Each variable was ranked through Likert scale. The total score of all land degradation indicators was converted into land degradation index. The study found that land degradation index in Batang Toru watershed landscape consist of very low (0,00-0,2), low (0.21-0,4), moderate (0.41-0,60 ), high (0.61-0.80) and very high (0.81-1.00). Most of Batang Toru watershed areas fall into moderate land degradation category.