The Relationship Between Primary Nutrient Concentrations and Environmental Damage in the Disaster-Prone Area of ​-​-Mount Merapi Julianto E. A (a*), Susila Herlambang (b) Herwin Lukito (c)
UPN Veteran Yogyakarta
Abstract
The eruption of Merapi provides economic benefits in the form of increased soil fertility and an abundance of sand and stone materials. Over time, mining began to encroach on yards, becoming increasingly wild and not using good rules or governance. The result is that environmental damage is prone to occur in the form of land criticality.
The study was conducted to identify the level of land criticality on the slopes of Merapi. The output is to provide recommendations for land rehabilitation in order to realize sustainable development.
The results of the study show that the study area whose land is classified as very critical is 696.43 Ha or 4.48%. Critical land is 133.02 Ha or 0.85%. Furthermore, the area classified as somewhat critical/moderate is 80.35 Ha or 0.52%. Land classified as potentially critical is 527.17 Ha. Finally, non-critical land is still the largest, namely 14.123 Ha.
Recommendations for critical land rehabilitation consist of vegetation and civil engineering. The selection of vegetation uses vegetation that already exists in the area (local/in situ) as much as possible. General civil engineering recommendations use a terracing system (bench terraces including flat bench terraces, back bench terraces, sloping bench terraces, garden terraces, broken bench terraces).
Rehabilitation of critical land in riverbank areas using civil engineering with flood, control and/or river bank protection and vegetation by planting grass. Areas with all slopes and accompanied by signs of ravines, the recommendation is to block the ravines using civil engineering while vegetation is to plant grass.
Keywords: mitigation, environmental damage, critical land, eruption disaster, slopes of Mount Merapi
