"Introduction to Applied Mathematics for Environmental Science" is a textbook aimed at students and professionals in the fields of ecology and environmental sciences. It seeks to make mathematical concepts and their applications in environmental science understandable. The author, David F. Parkhurst, developed the book from his lecture notes to bridge the gap between theoretical mathematics and practical applications. The book covers various mathematical structures, including linear and nonlinear algebraic equations, derivatives, integrals, as well as ordinary and partial differential equations. Each chapter follows a clear pattern: it begins with an example from environmental science, followed by a detailed description of the mathematical structure and additional application examples. This approach fosters a deeper understanding of mathematics as a tool for solving complex problems in environmental science.