贵州省坝子的空间分布及不同地貌区坝子-山地组合类型的探索性划分研究

The basins distribution of space and exploratory divide basin-mountain combination form different landforms in Guizhou province

合理定量表达贵州省各地貌区域内坝子的分布差异,划分出不同地貌区域内坝子-山地的组合类型,对于坝子在贵州复杂地貌类型中的空间分异特征研究具有重要意义。以高清遥感影像为基本数据源,提取贵州省坝子空间分布的矢量数据,参照贵州省6大地貌分区,对各区域内的坝子及坝子-山地组合类型进行探讨。结果显示:贵州省的坝子面积占全省国土面积的4.52%,单个坝子的平均面积为0.573 3 km2;参照贵州省坝子的类型、坝子周边的地貌及高清遥感影像,将坝子-山地组合划分为中山峡谷坝组合、中山沟河谷坝组合、中山盆地坝组合、低山沟河谷坝组合、低山盆地坝组合、低山丘陵河谷坝组合、低山丘陵盆地坝组合、丘陵洼地坝组合、丘陵盆地坝组合和低山槽谷坝组合型10类。各类型的坝子-山地组合在不同的地貌区域分布特征存在差异,同时又在不同地貌、不同流域的某些区域呈现相似性,但其地形主导因素不同。

It is of significance in the spatial variation study of the basin in the complex landform of Guizhou that reasonable quantitative expression of the distributional difference of the basin in each Geomorphic region among Guizhou and classified the different types of basin-mountain combination in different Geomorphic region. Extract the vector data of Guizhou basin , comparison with the six geo- morphologic division of Guizhou regions , and discuss the basin and basin-mountain combination in each regions. The results show that： Guizhou Province, the overall basin area accounted for the prov- ince＇s land area 4.52%, the average area of the single basin is 0. 573 3 km2 ; According to the Guizhou province dam type and peripheral geomorphology and high definition remote sensing image, take basin-Mountain combination divided into 10 categories： secondary mountain and canyon-basin combination, secondary mountain and river valley basin combination, secondary mountain and basin combination, low mountain and river valley basin combination, low mountain and basin combination. low mountain hilt andriver valley hasin combination, low mountain hill and basin comt）ination, [lilly and low-lying land and basin combination, hill and basin combination. Various types Basin-Mountain combination~ distribution characteristics is difference in different geomorphic areas. But in some re- gions of different landforms and （lifferent basins are Similarity, but its topographic dominant factors are different.