Socio-Ecological & Resource Sustainability Simulator

Instructions & Explanation

Socio-Ecological & Resource Sustainability Simulator

Simulating Natural Carrying Capacity C(t), Resource Yield P(t), Artificial Buffer Drawdown A(t), and Ecological Drift Index (SDI).

Model Status: Illustrative
Scenario Presets:
Ecological Drift Index (SDI)
0.00
Compensation Limit (Ccrit)
0.0
Capacity level below which the artificial reserve can no longer hold yield at target
Ecological Health
SUSTAINABLE HARVEST
Alignment Margin
0%
Distance from the SDI = 1.00 balance boundary
Reserve Utilization
0%
Peak artificial drawdown relative to the available reserve
Capacity Trend
STABLE
Time to Compensation Limit
—
Model interpretation:
Model Formulation, Equations & Normalization Assumptions

Governing Equations:

  • Natural Carrying Capacity Dynamics: dC/dt = β·R + I − γ·D, with C(t) clamped to [0, C0]
  • Ecological Drift Index: SDI = (γ·D) / (β·R + I)
  • Artificial Buffer Drawdown: A(t) = min(Amax, max(0, P* − φC)), where φC = (C(t)/C0)·P*
  • Compensation Limit: Ccrit = C0 · max(0, 1 − Amax / P*)

Units & Parametric Assumptions:

All environmental metrics are dimensionless normalized index values. The baseline natural regeneration factor is β = 1.0, the degradation factor is γ = 1.2·α as an illustrative parameterization, C0 = 100, and the horizon is 60 cycles. Elevated strain factors (α) represent ecosystem fragility, habitat fragmentation, or severe environmental friction.

Interpretive boundary: SDI < 1 indicates that modeled regeneration and restoration exceed modeled extraction pressure; SDI = 1 is the balance boundary; SDI > 1 indicates net modeled capacity depletion. The model has no irreversibility, thresholds, or species dynamics. It is an illustrative system-dynamics sketch, not an ecological forecast, resource-management tool, or assessment of any real ecosystem.