怒江小流域土地利用变化及人文驱动力分析--以茶山小流域为例

通过实地调查和两期土地利用现状数据对比以及对农户的访谈，分析研究怒江茶山小流域土地利用现状及时空变化特征，从人文地理视角研究人地关系地域系统，分析导致土地利用变化的驱动力，为确立可持续发展背景下土地利用优化模式及产业结构的优化提供重要前提和科学依据。

A STUDY ON THE DRIVING FORCES OF LAND-USE CHANGES IN A SMALL WATERSHED OF THE NUJIANG

By using RS and GIS technique and the materials from field survey and visiting peasant households at representative regions, the spatio-temporal changes of land-use in the Chashan watershed are analysed from the point of view of human geography. The results show that the cultivated land area in the watershed has dropped to a small extent, the areas of forest land returned from grain plots and the garden land have increased, unused land area has also dropped, and the built-up area has slightly risen. The driving forces that lead to those changes include natural factors and humanistic factors, and the latter is more important. The humanistic factors in the Chashan watershed are the increasing needs of human's survival and consumption, the change of land policy and environmental protection policy, the adjustment of industrial structure, the development of market economy, and the construction of infrastructure. It is considered that developing economy, and developing science and education to raise local people's living level and improve their life quality, are key factors to make full use of land resource and promote the sustainable development of the watershed.