Revitalisasi Danau Limboto dengan Pengerukan Endapan di Danau: Pemodelan, Analisis, dan Simulasinya

Abstract

Limboto lake is one of assets of Province of Gorontalo that provides many benefits to the surrounding society. The main problem of Limboto lake is the silting of the lake due to sedimentation caused by forest erosion, household waste, water hyacinth, and fish farming which is not environmentally friendly. In this article, a mathematical approach is used to modeling the Limboto lake siltation by including the revitalization solution namely the lake dredging. Mathematical modeling begins by building and limiting assumptions, constructing variables and parameters in mathematical symbols, and forming them into a first order differential equation system deterministically. Furthermore, we study the dynamics of the model such as identifying the existence of equilibrium points and their stability conditions. We also give a numerical simulations to show the conditions based on the stability requirements in previous analytical results.

Cultural Fluctuation of Lake Communities by the Shrinkage of Lake Limboto, Indonesia

“…Accordingly, the sedimentation began first, but the acceleration of sedimentation may be due in part to recent human intervention. This shallowing is a result of lake sedimentation coming from rivers as well as sedimentation caused by human activity patterns around the lake [8,9]. In this context, it is evident that the reduction in the depth of the lake is attributable not just to natural processes but also to human interactions with the environment.…”

“…Various factors associated with natural phenomena might contribute to the shallowing of the lake, such as sedimentation and rainfall, among others [4,9,10]. Apart from this, other factors related to human activities contribute to the shallowing of the lake, such as cultivation efforts and tree-cutting activities in the forests of the upper reaches of the Limboto watershed, which act as an area of water catchment [5,11].…”

Strategies on Degraded Lake Management for Sustainable Environmental Ecosystem in Lake Limboto, Gorontalo

“…According to Mahmud et al, (2020), the water hyacinth population in Lake Limboto will not likely become extinct since there is always an intake of nutrients from household waste, rice fields, forest erosion, and fish farming that is not environmentally friendly. Furthermore, water weeds can be controlled mechanically, biologically and chemically [9]. The results of surveys, interviews and FGDs show that sediment originates from erosion of watershed and catchment areas and lake borderland that has accumulated silts in the lake waters.…”