摘要
基于山东省2020年下垫面遥感数据及高分辨率DEM资料,从影响汇流的下垫面因子出发,按地貌-土地利用组合进行了汇流地类划分,并对全省53个不同面积的子流域汇流地类进行了分析。依据中国1∶100万数字地貌分类方案并结合山东省地貌实际情况,山东省地貌类型主要分为平原、丘陵和山地3类,平原、丘陵、山地之间的起伏度临界值分别为30、100 m,相应的坡度临界值分别为1.8°、5°;基于中国多时期土地利用遥感监测数据集土地利用分类系统,将耕地划分为水田和旱地,单列裸土地,最终将山东省土地利用分为8个大类;将地貌划分结果和土地利用划分结果进行叠加,划分山东省汇流地类为平原-旱地、平原-建设用地、丘陵-旱地等22类,其中平原-旱地面积占比最大;从子流域汇流地类平均情况来看,随着子流域面积增加,汇流地类数不断增加直至稳定,而最大汇流地类占比不断减小直至稳定。
Based on the remote sensing data of underlying surfaces and high-resolution DEM data in Shandong Province in 2020,the underlying surface factors affecting runoff were investigated,and the land surface type for runoff concentration was classified according to geomorphology-land use combinations.The land surface types for runoff concentration of 53 sub-basins with different areas in Shandong Province were analyzed.According to China’s 1∶1000000 digital geomorphological classification programme and considering the actual geomorphological situation in Shandong Province,the geomorphological types of Shandong Province were mainly divided into three types:plains,hills and mountains,with critical relief amplitude of land surface values of 30 and 100 m between plains,hills and mountains,and corresponding critical slope values of 1.8°and 5°.Based on the land use classification system of China’s multi-period land use remote sensing monitoring dataset,land use in Shandong Province was finally classified into eight major categories,with arable land being categorized into paddy field and dry filed,and bare land being listed separately.By combining the geomorphological and land use classification results,22 land surface types for runoff concentration in Shandong Province were obtained,such as plain-dry field,plain-construction land,and hill-dry field,among which the area of plain-dry field accounted for the largest proportion of area.The average classification results show that as the sub-basin area increases,the number of land surface types for runoff concentration increases until it reaches stability,while the percentage of land surface type for runoff concentration with maximum area decreases until it reaches stability.
作者
石朋
孟源
肖豪
瞿思敏
高伟
庄会波
陈干琴
樊鑫洋
杨雨蒙
方正
SHI Peng;MENG Yuan;XIAO Hao;QU Simin;GAO Wei;ZHUANG Huibo;CHEN Ganqin;FAN Xinyang;YANG Yumeng;FANG Zheng(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Shandong Hydrological Measurement and Testing Center,Jinan 250014,China;Shandong Hydrological Center,Jinan 250014,China)
出处
《水利水电科技进展》
CSCD
北大核心
2024年第6期1-5,共5页
Advances in Science and Technology of Water Resources
基金
国家自然科学基金项目(52179011)。
关键词
汇流地类
地貌分类
土地利用分类
下垫面遥感数据
起伏度
山东省
land surface type for runoff concentration
geomorphological classification
land use classification
remote sensing data of underlying surface
relief amplitude
Shandong Province
