利用三种方法解决Volterra的两个种群的生态学问题。-Volterra use three methods to solve the problem of two populations of Ecology.

journal of ecology-journal of ecology...

美国大学生数学建模竞赛（MCM/ICM）美国大学生数学建模竞赛由美国数学及其应用联合会主办，是唯一的国际性数学建模竞赛，也是世界范围内最具影响力的数学建模竞赛。赛题内容涉及经济、管理、环境、资源、生态、医学、安全、未来科技等众多领域。竞赛要求三人（本科生）为一组，(The American College Mathematical Contest in modeling (MCM/ICM), sponsored by the American Mathematical and its appli

计算植被辐射传输过程的经典程序——PROSAIL，可以有效地计算给定一维均一连续植被的方向反射率因子BRF。(PROSAIL,a classical program to calculate vegetation RT process, which can give BRF as its result for given input parameters.The combined PROSPECT leaf optical properties model and SAIL canopy bid