云南山地民族刀耕火种生态学定位与山地森林资源可持续利用

通过对云南省永仁县直苴村刀耕火种农业的景观生态学研究，发现在一个相当长的时期内，正是刀耕火种使山地民族社区人和森林都实现了自身的可持续发展，并同时实现了二者的和谐发展，但随着人口、资源和环境的变化，刀耕火种存在的条件不断消失，刀耕火种也必然消失，这说明任何一种物质生产方式都有其时空尺度的局限性，都必须以一定的环境条件和资源条件为基础，以区域内生态系统的健康、持续性发展为前提，

Ecological Orientation of Slash-and-burn Cultivation of Mountain Nationalities in Yunnan Province and Sustainable Use of Forest Resources in Mountainous Regions

The landscape ecology of slash-and-burn cultivation in Zhiju Village, Yongren County of Yunnan Province was studied. It was found that it was the slash-and-bum cultivation that made man and forests of communities of mountain nationalities achieve their own sustainable development and harmonious development between human being and forests. However,with the changes of population,resources and environment , the conditions that slash-and-bum cultivation depended died away, so did slash-and-burn cultivation itself. The results showed that there were limitations of spatiotemporal scale in any mode of production that must be based on certain conditions of resources and environment,and must be based on the prerequisite of healthy ecosystem and sustainable development of regions.