喀斯特山地草地资源遥感调查及常态化监测研究——以灌阳县为例

doi:10.11686/cyxb2017094

草业学报 ›› 2018, Vol. 27 ›› Issue (1): 14-21.DOI: 10.11686/cyxb2017094

喀斯特山地草地资源遥感调查及常态化监测研究——以灌阳县为例

史莎娜^{1, 2}, 汤传勇^{3, *}, 谢炳庚¹, 刘敏⁴, 覃畅文⁴

1.湖南师范大学资源与环境科学学院,湖南长沙 410081;
2.广西师范学院北部湾环境演变与资源利用教育部重点实验室,广西南宁 530001;
3.广西师范学院地理科学与规划学院,广西南宁 530001;
4.广西国土资源规划院,广西南宁 530022

收稿日期:2017-03-07 修回日期:2017-05-27 出版日期:2018-01-20 发布日期:2018-01-20
通讯作者: E-mail:76756910@qq.com
作者简介:史莎娜(1984-),女,湖南常德人,工程师,在读博士。 E-mail:shala429@163.com
基金资助:
国家重点研发计划项目(2016YFC0502406)和北部湾环境演变与资源利用教育部重点实验室系统基金项目(2014BGERLXT06)资助

Remote sensing investigation and normalization monitoring of grassland resources in karst——a case study in Guanyang County

SHI Sha-na^{1, 2}, TANG Chuan-yong^{3, *}, XIE Bing-geng¹, LIU Min⁴, QIN Chang-wen⁴

1.College of Resources and Environment Science, Hunan Normal University, Changsha 410081, China;
2.Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Guangxi Teachers Education University, Ministry of Education, Nanning 530001, China;
3.School of Geography and Planning, Guangxi Teachers Education University, Nanning 530001, China;
4.Guangxi Institute of Land and Resource Planning, Nanning 530022, China

Received:2017-03-07 Revised:2017-05-27 Online:2018-01-20 Published:2018-01-20

摘要/Abstract

摘要： 以广西壮族自治区桂林市灌阳县为研究区,采用第二次全国土地调查成果和高分辨率遥感影像(Worldview-Ⅰ和Worldview-Ⅱ),叠加数字高程模型(DEM)、坡度和土壤等数据,利用面向对象方法遥感解译获取喀斯特山地草地资源的类型、面积及空间分布,建设灌阳县草地资源调查数据库;通过构建草地资源分类和土地利用现状分类的对应关系,借助第二次全国土地调查的年度变更调查成果,实现了喀斯特山地草地资源调查的常态化监测,拓展第二次全国土地调查及年度变更调查成果的应用领域。结果显示,2012年灌阳县草地资源面积为20829.42 hm²,其中热性草丛类面积为711.09 hm²,热性灌草丛类面积为16246.76 hm²,热性稀树灌草丛类面积为3871.57 hm²,与1986年第1次草地资源普查相比减少了32125.05 hm²;借助2012-2016年土地利用变更调查成果,实现了灌阳县草地资源调查数据库的动态更新,2016年灌阳县草地资源面积更新为20744.18 hm²,与2012年相比减少了85.24 hm²。农业结构调整、未利用地开垦和城镇建设用地扩张等人为活动以及山体滑坡等自然灾害导致了灌阳县草地资源面积的减少。通过灌阳县喀斯特山地草地资源遥感调查和土地利用变更调查成果扩展利用的研究,实现了草地资源信息化管理和动态监测,为喀斯特山地草地资源的开发、利用及政府决策提供了可靠的数据基础。

Abstract: This study reports research conducted in Guanyang county, in the Guangxi Zhuang Autonomous Region, to compile a database of grassland resources. Based on the results of the second national land survey, high resolution remote sensing images (Worldview-Ⅰ and Worldview-Ⅱ) and slope and soil data from the digital elevation model (DEM), we used the object-oriented method to identify the type, area and spatial distribution of grassland resources in the karst mountain area. By the analyzing the correlation between grassland resource classification and land use status classification and the results of the modified second annual national land survey, we successfully normalized the monitoring survey of karst mountain grassland resources and compared the results with the second survey and the annual national land change survey. The data showed that in 2012, the area of grassland resources in Guanyang county was 20829 ha, including 711 ha of tropical tussock, 16246 ha of tropical shrub tussock, and 3871 ha tropical shrub tussock, with scattered trees. These areas total 32125 ha less than was recorded in the first grassland resources survey in 1986. Through analysis of the land use change survey results from 2012 to 2016, the database of grassland resources in Guanyang county was updated. The area of grassland resources in Guanyang county in 2016 was 20744 ha, 85 ha less than in 2012. Agricultural development, unused land reclamation, urban expansion, and landslides and other natural disasters, were factors contributing to the reduction of the grassland area in Guanyang county. This study provides a scientific basis for the development and utilization of karst mountain grassland resources and government decision making.

史莎娜, 汤传勇, 谢炳庚, 刘敏, 覃畅文. 喀斯特山地草地资源遥感调查及常态化监测研究——以灌阳县为例[J]. 草业学报, 2018, 27(1): 14-21.

SHI Sha-na, TANG Chuan-yong, XIE Bing-geng, LIU Min, QIN Chang-wen. Remote sensing investigation and normalization monitoring of grassland resources in karst——a case study in Guanyang County[J]. Acta Prataculturae Sinica, 2018, 27(1): 14-21.

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喀斯特山地草地资源遥感调查及常态化监测研究——以灌阳县为例

Remote sensing investigation and normalization monitoring of grassland resources in karst——a case study in Guanyang County

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