近19年江苏海岸带地区土地利用变化特征

发布时间：2018-01-21 08:46

本文关键词： 土地利用变化转移特征生态系统服务价值海岸带地区江苏省　出处：《水土保持研究》2017年04期 　论文类型：期刊论文

【摘要】：海岸带地区因其拥有丰富的水土资源成为人类生产活动最为集中的区域之一,然而近几十年来,由于人类强烈的开发利用活动导致海岸带地区土地利用类型发生显著改变。从时间序列上选取1995年、2002年、2009年、2013年四期遥感影像数据,借助RS和GIS技术对近19a江苏海岸带地区土地利用变化及其服务功能价值开展研究,以期为当地土地资源的合理开发利用、土地利用结构调整以及实现人地的和谐统一提供参考依据。结果表明:(1)从土地利用类型构成来看,耕地是江苏海岸带地区最为主要的土地利用类型,其次为人工塘,而林地、草地和滩地面积相对较小;(2)从土地利用类型面积变化趋势来看,研究区土地利用类型变化集中体现为耕地、水体、滩涂的减少和建设用地、人工塘面积的增加;(3)从土地利用类型转移来看,各研究时段土地利用类型转移有所不同,总体来看,耕地、建设用地、人工塘三种土地利用类型间的转移更为普遍与频繁,相互转移量大;水体主要与滩涂发生相互转换;而耕地则是林地与草地的主要转移目标和来源;(4)近19a来,江苏海岸带地区生态系统服务总价值逐渐减少,且减少速率明显加快。
[Abstract]:Coastal zone has become one of the most concentrated areas of human production because of its abundant soil and water resources. However, in recent decades. The land use types in the coastal zone have changed significantly due to the intense human exploitation and utilization activities. 1995, 2002 and 2009 are selected from the time series. In 2013, four issues of remote sensing image data were used to study the land use change and its service function value in the coastal zone of Jiangsu province in the last 19 years with the help of RS and GIS techniques. In order to provide a reference for the rational development and utilization of local land resources, the adjustment of land use structure and the realization of harmony and unity of man and land, the result shows that the structure of land use type is considered from the point of view of the composition of land use type. Cultivated land is the most important land use type in Jiangsu coastal zone, followed by artificial ponds, while woodland, grassland and beach area is relatively small. (2) according to the change trend of land use type area, the change of land use type in the study area mainly embodied in the decrease of cultivated land, water body, tidal flat and the increase of construction land and artificial pond area; From the perspective of land use type transfer, the land use type transfer is different in different study periods. In general, the transfer between cultivated land, construction land and artificial pond is more common and frequent. Large amount of mutual transfer; The water body mainly interchanges with the tidal flat; The cultivated land is the main transfer target and source of woodland and grassland. (4) in the last 19 years, the total value of ecosystem services in the coastal zone of Jiangsu Province has gradually decreased, and the rate of decline has been accelerated obviously.
【作者单位】：河南大学资源与环境研究所;国土资源部海岸带开发与保护重点实验室;北京林业大学;
【基金】：国家自然科学基金(41101089;41371450) 国土资源部海岸带开发与保护评价重点实验室开放资助项目(2013CZEPK05)
【分类号】：F301.24
【正文快照】： 土地是人类赖以生存和发展的自然物质基础[1],土地利用是人类为了满足自身发展需要而对土地资源进行有目的的经营管理和治理改造活动[2-3],是一个长期而复杂的动态过程。20世纪以来,随着人地矛盾的日益突出,土地利用变化逐渐被国内外相关组织和学者所关注,“土地利用/土地覆被

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