The findings come at a time when watershed degradation has become one of Indonesia's most pressing environmental challenges. Rapid deforestation, agricultural expansion, and land conversion on steep slopes have accelerated soil erosion and sedimentation in many river basins, increasing flood risks, reducing agricultural productivity, and threatening water security. The Upper Citarum Watershed, one of Indonesia's most important river systems, has experienced severe ecological pressure due to these unsustainable land-use practices.
The Cisangkuy Sub-Watershed has been particularly affected. Declining vegetation cover, intensive farming on sloping land, and inadequate conservation measures have weakened the watershed's ecological functions, leading to higher runoff, lower soil fertility, and greater environmental vulnerability. The study highlights that restoring natural vegetation while improving agricultural management is essential for reversing these trends.
To evaluate the effectiveness of different conservation methods, Asikin Muchtar conducted a quantitative field study involving 135 respondents, including farmers, land managers, and environmental stakeholders working within the Cisangkuy Sub-Watershed. The research combined structured questionnaires with direct field observations of land conditions, vegetation cover, and erosion indicators. The collected data were analyzed using multiple linear regression to determine how different soil conservation practices contribute to watershed degradation reduction.
The study assessed five major conservation practices:
- Terracing
- Vegetative conservation
- Agroforestry systems
- Contour farming
- Check dam implementation
The results demonstrate that most conservation practices positively contribute to reducing watershed degradation. Among them, vegetative conservation produced the strongest impact.
According to the study, maintaining vegetation cover significantly reduces surface runoff, strengthens soil structure through plant root systems, improves water infiltration, and protects land from rainfall impact. Areas with healthier vegetation experienced lower erosion rates and better soil stability than exposed agricultural land.
The research also identified agroforestry systems as another highly effective strategy. Integrating trees with agricultural crops improves ecological stability while providing farmers with diversified sources of income. Tree canopies reduce the direct impact of rainfall, root systems stabilize the soil, and organic matter improves overall soil quality, making agroforestry beneficial for both environmental conservation and sustainable agriculture.
Meanwhile, terracing and contour farming also contributed significantly to reducing erosion, particularly on steep agricultural land. However, their effectiveness depended heavily on proper construction, maintenance, and consistent implementation by farmers. In several locations, damaged terraces and inconsistent contour farming practices limited their overall performance.
The only conservation practice that did not achieve statistical significance was check dam implementation. Although check dams helped control sediment and water flow in certain locations, many structures had deteriorated or were poorly maintained, reducing their overall effectiveness. The study suggests that conservation infrastructure alone cannot deliver optimal environmental benefits without regular maintenance and integrated land management.
Overall, the research found that the five conservation practices together explained approximately 52 percent of the variation in watershed degradation reduction. The remaining variation was influenced by other factors such as rainfall intensity, land ownership patterns, slope characteristics, and local environmental policies.
Another important finding is the role of community participation. The study shows that conservation programs become more effective when local communities actively participate in sustainable land management. Environmental awareness, farmer commitment, and community involvement strengthen the long-term success of conservation initiatives across the watershed.
As ethically reflected in the study by Asikin Muchtar of Universitas Indonesia Timur, successful watershed management requires more than engineering solutions. Vegetation-based conservation, sustainable agricultural practices, and active community participation must work together to restore ecological functions and ensure long-term environmental sustainability in the Upper Citarum Watershed.
The findings have broad implications for environmental management in Indonesia. Local governments can use the research to strengthen watershed rehabilitation policies by prioritizing vegetation restoration and expanding agroforestry programs in erosion-prone areas. For the agricultural sector, the study demonstrates that sustainable farming practices can simultaneously improve environmental protection and maintain land productivity. The results also provide valuable evidence for policymakers developing climate adaptation strategies, flood mitigation programs, and sustainable land-use regulations.
Beyond Indonesia, the research contributes to international discussions on sustainable watershed management by demonstrating how nature-based solutions can outperform purely mechanical conservation measures when supported by strong community engagement. As climate change intensifies rainfall variability and erosion risks, integrated soil conservation strategies are becoming increasingly important for protecting ecosystems and ensuring long-term food and water security.
Author Profile
Asikin Muchtar is a researcher from Universitas Indonesia Timur, Makassar, Indonesia, specializing in watershed management, soil conservation, environmental management, sustainable agriculture, and natural resource conservation. His research focuses on practical strategies for reducing environmental degradation while supporting sustainable livelihoods in agricultural landscapes.
Source
Article Title: Soil Erosion Control Practices and Their Effect on Watershed Degradation Reduction in the Upper Citarum Watershed, West Java, Indonesia
Author: Asikin Muchtar
Affiliation: Universitas Indonesia Timur, Makassar, Indonesia
Journal: Indonesian Journal of Agriculture and Environmental Analytics (IJAEA)
Volume: 5, Issue 2
Publication Year: 2026
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