摘要
本文以烟台市1996年土地利用现状图图斑分类和地面调查为斑块属性引导,在3S技术的支持下,对2002年9月9日的ETM影像进行解译分析,选取斑块密度(PD)、形状指数(SI)、景观多样性(DV)和景观均匀度指数(EV)等,对烟台市12个典型流域的土地利用结构进行了分析。结果表明:在斑块尺度上,6种主要土地类型与流域面积和形状指数进行的关联分析表明,灌木林斑块和旱地斑块的相对面积(在0.01水平上)与流域面积的关联程度显著,关联系数分别为0.843和0.796,且呈对数回归关系;水浇地和旱地斑块的相对面积与形状指数关联程度极为显著(在0.01水平上),关联系数大于0.729。从相互关系来看,在本文所研究的流域面积范围内,灌木林斑块和旱地斑块的相对面积随着流域面积的增大呈增加趋势;而形状指数与水浇地斑块相对面积呈正相关、与旱地斑块相对面积为负相关。在景观尺度上,斑块数量与流域面积的关联程度极为显著(在0.01水平上),关联系数为0.987,有较高的置信度,斑块数量与流域面积之间存在正相关回归关系。
Based on RS and in Yantai City by using the GIS techniques, this study analyzed the land use pattern of 12 typical basins classified principle in the land use map of 1996 to interpret the Land-sat TM image of sep.9. 2002. RS and GIS software, such as erdas 8.6, Arcview 3.2 and Arcinfo 7.0 were used as an interpretation tools. Landscape is divided into 10 types according to land use and cover classification method. River basin area and river shape index are the most important indices in describing the character of rivers. The patch density, shape index, landscape diversity, and landscape evenness were calculated by using Fragstats3.3. Association and regression analysis were employed to describe the relations between mentioned indices. In the patch scale, the association analysis between the basin area, shape index and six major land use types indicated that there are significant correlations between the relative area of shrub patches and the relative area of non-irrigated cropland patches （at 0.01 level） and the basin area. The association coefficients are 0. 843 and 0. 796. There are significant correlations between the relative areas of irrigated and non-irrigated cropland patches （at 0.01 levels） and shape index. There is a logarithmic relationship between the relative area of shrub and non-irrigated cropland patches and the basin area, and there is a positive linear relationship between the relative area of irrigated cropland patches and shape index and a negative relationship between the relative area of non-irrigated cropland patches and the shape index. There is a significant correlation （at 0.01 levels） between patch number and basin area, and the association coefficient is 0. 987 in landscape scale. There is a positive relationship between the basin area and the patch number. And there is no significant correlation between shape index and other landscape indices. According to above findings we can confirm that the river basin area and river shape index obviously affect the landscape structure of different rivers. The results of studying landscape class area and patch number showed that, though ＂orchard and vegetable＂ are dominant in Shandong Peninsula, the area of orchard and vegetable is not evident in river basin. In contrast, the non-irrigated cropland is dominant in area. The changing trend of irrigated cropland showed that it is the response of the local climate, terrain and physiognomy. Yantai City is the important part of Shandong Peninsula and the landscape structure analysis based on the river basins has significant academic and practical meanings.
出处
《资源科学》
CSSCI
CSCD
北大核心
2006年第6期127-133,共7页
Resources Science
基金
鲁东大学校基金项目(编号:20053201)
山东省教育厅项目(编号:J01H03)
山东省自然基金项目(编号:Z2003E01)
关键词
流域面积
流域形状
景观结构
关联分析
山东半岛
Basin area
River shape
Landscape structure
Association analysis
Shandong Peninsula
