Applied finance makes sense, In terms of capital management (The application of financial theory to real-world situations. It includes investment analysis, risk management, capital budgeting, financial forecasting, and valuation analysis).
Its depends with the job market, if job opportunities in capital market is high then go for it, but if job opportunities in enviromental economics are high then continue with enviromental economics at masters level but a combination of both is the best due to over increasing in green bonds and green financing.