荒漠─绿洲草地农业系统的耦合与模型

本文探讨了山地子系统，绿洲子系统和荒漠子系统所组成的链状耦合系统─—荒漠─球洲草地农业系统的耦合效益与它的模型。提出了与之相应的线性规划与系统动力学模型，优化后的结果表明，在保持生态系统正常运转，永续利用的条件下，系统耦合后的社会总体效益可提高３．７倍，畜牧经济效益提高１５．７２倍。

Models of Coupling Agro-grassland Systems in Desert-oasis Region

In this paper discussed the coupling effect between the subsystems of agricuItural pred uction in theareas of mountains,oases and deserts within the general agro-grassland system in the Hexi Corridor,GansuProvince. The chain-like coulping relationshipe between the subsystems were described and optimised by alinear programming and the dynamic models,The results of modeling indicate that the optimal couplingmeasures would increase economic returns to a level of 3.7 times as much as the present one for the wholesystem and 15.72 times for livestock preduction only,without disturbing the normal functions andsustainability of the local ecosystem.