南京大学学报（自然科学版）Issue(5)：593-601,9.DOI:10.13232/j.cnki.jnju.2014.05.007
基于地貌情势的辐射沙脊群潜在土地资源分析
Potential land resources analysis of the radial sand ridges based on the geomorphological situation
摘要
Abstract
The development,utilization and protection of the potential land resources of the radial sand ridges are important for the Jiangsu coast.This article based on topographic data of tidal flats,considering geomorphology situation of radial sand ridges,focused on acquiring the amount and distribution of potential land resources under different development intensity with different reclaiming elevation.Using multi-temporal remote sensing images in low tide,stability of potential land resources was analyzed by calculating the outcropping repetition rate of tidal flats. Appropriate scale reclamation and layout of Tiaozini Gaoni Dongsha as the main zone of radial sand ridges was il-lustrated from the land demand and different reclaiming elevation.The results show that:(1 )potentially land resources are huge and the area ranges from 1552 to 6827 km2 ,including 480 to 4141 km2 on sandbars according to different reclaiming elevations;(2)on the basis of stability analysis during 40 years (1973 2011)and 10 years (2005 2014),the areas of Tiaozini and Gaoni above 0 meter (Chart Datum)respectively are 605.65 km2 and 762.77 km2 (the stable area is distributed on the interior of sand ridges,the secondary stable areas around the key stable area and eroded by repeated tidal creeks,and the peripheral area is instability region which is less exposed);and(3)the most appropriate elevation interval for reclaimation is between 0 m of the Old Yellow River Datum and the 0 m of the Chart Datum.In this case,a large space can be conserved for sedimentation promotion.The stable zone above the 0 m (the Old Yellow River Datum)should be the priority in the reclamation planning.关键词
地貌情势/辐射沙脊群/潜在土地资源Key words
geomorphological situation/radial sand ridges/potential land resources引用本文复制引用
葛小平,丁贤荣,康彦彦,高恒娟,周虹宏,王鑫浩..基于地貌情势的辐射沙脊群潜在土地资源分析[J].南京大学学报（自然科学版）,2014,(5):593-601,9.基金项目
国家海洋公益性行业科研专项(201005006),江苏省基础研究计划(自然科学基金)(BK2012414) （201005006）
