Open AccessEffect of Vegetation Diversity on Erosion Rate
Author(s) -
Sri Sarminah,
Farha Shera Prititania,
Karyati
Publication year - 2018
Publication title -
agrifor/jurnal agrifor
Language(s) - English
Resource type - Journals
eISSN - 2503-4960
pISSN - 1412-6885
DOI - 10.31293/af.v17i2.3621
Subject(s) - erosion , environmental science , vegetation (pathology) , surface runoff , forestry , gigantea , vegetation types , hydrology (agriculture) , soil science , agronomy , geography , ecology , botany , biology , geology , geomorphology , medicine , geotechnical engineering , pathology , habitat
The climate in Indonesia is a tropical climate with high rainfall, making Indonesia vulnerable to erosion. In addition to high rainfall, vegetation, slope and soil types also affect erosion. This study aims to determine the Important Value of Species (NPJ), the relationship between rainfall and surface runoff and the mass of eroded soil and the level of erosion hazard at different vegetation densities. Important Value The highest types of the three dominating types in plot I were Schima wallichii 115.12%, Macaranga gigantea 69.38% and Cratoxylum sumatranum 44.69%. Whereas in plot II the highest NPJ value of three types dominates, namely Macaranga gigantea 59.13%, Litsea angulata 39.52% and Aquilaria mallacensis 35.37%. The amount of eroded soil mass that occurred in PUE I was 0.13 tons / ha / year and PUE II was 0.19 tons / ha / year. Simple linear analysis of the relationship between rainfall and eroded soil mass at PUE I has a correlation value (r) = 0.79 with the equation Y = -8.34 + 0.39X, whereas in PUE II the correlation value (r) = 0.90 with the equation Y = -12.96 + 0.56X. The danger level of erosion (TBE) in PUE I and PUE II was very mild (erosion rate 90 cm).