对南方草地资源开发的生态经济效益的再认识

Re-recognizing on ecolomical benefits of exploiting grassland resources in south China.

通过比较,从生态经济效益的角度,探讨了开发南方草地资源的意义及最佳开发途径。根据以往的研究和一系列计算,提出了在中国北方草原区应实行以保护为前提的利用和在南方草山草坡实现再利用的同时保护环境的论点,在理论上证明了南方草地具有与北方草原同等的总的初级生产力,而其生态可塑性远远优于北方。并指出由于林业的表观经济效益受到多种因素的制约,未能在振兴山区经济方面扮演主要角色,而林业和草地畜牧业的复合体系可望成为开发南方草地的最佳途径。

Through ecolomical comparison, this paper approaches the signficance of exploiting grassland resources on south China and its optimum way. Based on the former studies and series of calculation, it's suggested that in north China, the utilization of grassland resources should be under the prerequisite of environmental protection, and in south China, the utilization could be performed simultaneously with the latter. It's proved that theoretically, grassland in south China has the same gross primary prodictivity as in north China, but its ecological plasticity is more superior. Owing to the apparent economic benefit of forestry is limited by various factors and the forestry cannot play a major role in promoting economy of mountainous region, the optimum way of exploiting grassland resources in south China should be the combination of forestry and animal husbandry.