滇西北丽江地区土地资源可持续利用研究

丽江地我位于滇西北高山峡谷地区。该区土地资源的特点。（１）类型多样，空间结构规律性强；（２）以山地为主，主要分布在冷，寒凉山区；（３）陡坡土地多；（４）水资源丰富。但难以开发利用；（５）土地资源总体质量较差。土地利用方面存在不少问题；（１）利用方式多样，以林业用为主。但利用水平和产值偏低；（２）农业用地效益较低，差异大；（３）旱地多，陡坡地多，土地退化逐步扩大。耕地总体质量偏。土地资源利用与土地资

SUSTAINABLE LANDUSE OF LIJIANG PREFECTURE IN NORTHWEST YUNNAN PROVINCE

Being a material base of sustainable development, land resource plays an important role in a local social-economy development. With multi-use suitability, the land optimal utilization and pattern depends on its characteristics and structures. Lijiang Prefecture is located in the mountain-valley region of norhwest Yunnan Province. Its land is characterized by: ① The land types is diversiform and its spatial structures is very obvious; ②mountain is dominant and chiefly distributed in cold and very cold mountain zone; ③slope land is great; ④the water resources is abundant and it is difficult to exploited; ⑤so the land quality is poor. There are a series problems in land use: ①Land use styles is diversied form, and the forest land is the most large but has low utilization and poor production value; ②agrirculture lands benefits are poor and different between each others; ③the slope cultivated dry land are large, land degradition is much obvious, the cultivated land quality is poor. The land utilization dose not harmony with the land characteristics and land structures. Therefore, the land utilization should take sustainablity as promise, based on ? the land characteristics and land structures, and a serise corresponding countermeatures should be adopted promote and enhance the landuse sustainbility and land functions