遥感影像数据在自然资源管理应用中的问题探讨——以祁连山国家公园肃南县境范围为例

Application of Remote Sense-based Data to Natural Resources Management——with Qilian MountainsNational Parkas a Case

以拟建的祁连山国家公园肃南县境范围地类为对象,参考地理国情数据,并利用遥感判读和现地验证等方法,研究分析了林业、国土等部门土地资源数据交叉重叠等问题,结果为本次调查并确认的土地面积与第二次土地调查数据、林地"一张图"数据有一定的差别,其中与国土数据相比较,林地增加18 944hm2、草地面积减少206 514hm2;与林地"一张图"数据比较,草地增加115 263hm2,林地减少39 244hm2,林地、草地集中区划面积分别占各自总面积66.7%和67.6%,总体上反应了分区集中管理的要求。造成不同部门土地资源数据不一的原因主要在于土地分类标准不同和调查过程,为统一行使自然资源开发利用和保护监管职责,应统一全国土地分类标准,按主导地类分区管理林地和草地,破除部门之间的利益之争。

The crossing and overlapping problem of the land data among the sectors of forestry and state land resources managementconcerning the proposed Qilian Mountains National Park.The result showed that the data investigated has difference from the second land survey and'one-map'of forest.There are 18 944 hm2 increase in forest land and 206 514 hm2 reduction in grassland compared with the land survey,whereas there are 392 44 hm2 reduction in forestland and 115 263 hm2 increasein grassland.The area of forestland and grassland take up of the total area 66.7%and 67.6%.The data difference between land survey and'one-map'forest lies in the classification criteria and methodology applied.So to make the data accurate for forest management,the classification and methodology applied should be unified.