摘要
讨论了非线性森林发展系统的一类半离散模型。首先 ,用半离散逼近法建立了森林发展系统的一类非线性林龄面积结构的半离散模型 ;其次 ,讨论了半离散系统解的存在性和唯一性 ,用不动点定理证明了解的存在性 。
A semi\|discrete model of the nonlinear forest evolution system is discussed. First a class of nonlinear semi\|discrete age\|structure model of the forest evolution system is set up by semi\|discrete approximation. Secondly, the existence and uniqueness of solution for a semi\|discrete system are discussed. The author gives proof of the existence for solutions by the fix\|point theorem . The sufficient condition for the existence of a unique classic solution is obtained.
出处
《浙江工业大学学报》
CAS
2003年第2期177-181,207,共6页
Journal of Zhejiang University of Technology
