TY - JOUR
T1 - Hydrological Implication of Traditional Farming Systems: A Case Study in the
Upper Citarum and Cimanuk Watersheds, West Java
AU - Asdak, Chay AU - Supian, Sudradjat
JO - Journal of Engineering and Applied Sciences
VL - 12
IS - 17
SP - 4415
EP - 4419
PY - 2017
DA - 2001/08/19
SN - 1816-949x
DO - jeasci.2017.4415.4419
UR - https://makhillpublications.co/view-article.php?doi=jeasci.2017.4415.4419
KW - Land use change
KW -soil erosion
KW -runoff
KW -upper Citarum and Cimanuk watersheds
KW -Indonesia
KW -magnitude
AB - The assessment of important factors affecting runoff and erosion was carried out by collecting runoff
and soil loss from runoff/erosion plots. The runoff/erosion plots were set up in sloping areas of about 40%
slope in two different places of the upper parts of Citarum and Cimanuk Watersheds, West Java, Indonesia. The
plots (6×10 m) at the upper Citarum were established in the following four sets of conditions: bamboo garden,
mixed garden, small shrub and agricultural crops with different species and stand structures. After 20 rainfall
events, a treatment in the form of removing undergrowth and litter were applied to bamboo and mixed garden
plots. The results of this before and after treatment are the following: runoff from bamboo garden was increased
from 0.40-1.02 L/m2 and erosion was increased from 1.47-11.65 g/m2. While the runoff and erosion in mixed
garden were increased from 0.36-1.65 L/m2 and from 1.36-10.88 65 g/m2, respectively. When this compared to
the runoff and soil loss in the agricultural plot, the soil erosion is much higher, 50.5 65 g/m2 (about 50 times
higher). These results will then be compared to the similar field-plot based measured in the upper Cimanuk
watershed for a comparative study purpose. For both cases, stand/canopy structure appeared to be the
important factors that determine the magnitude of soil erosion. While the role of these factors were less
significant compared to rainfall in determining the magnitude of runoff.
ER -