广西科学2017，Vol.24Issue(2)：135-143,9.DOI:10.13656/j.cnki.gxkx.20170329.002
1995年-2015年广西海岸带养殖用地的时空分布
Analyses on Spatial-Temporal Evolution Pattern of Coastal Aquaculture in Guangxi Coastal Zone in the 1995-2015 Years
摘要
Abstract
[Objective]Coastal zone has been the core area in ecological related research because of the importance and vulnerability of its ecological function,and its landscape pattern changes and environmental effects are of particular concern.Due to the rapid expansion of the coastal land of Guangxi Beibu Gulf,the landscape pattern of the area changed significantly,so it was necessary to make a comprehensive evaluation of environmental effects by analyzing the spatial pattern of Beibu Gulf coastal aquaculture land.[Methods]Based on the Landsat TM/ETM+ images of Beibu Gulf coastal aquaculture land in 1995,2000,2005,2010,2010 and 2015,the MNDWI and object-oriented classification method were used to extract the information of the aquaculture land in each research area,and based on land use Dynamic change model,the spatial and temporal evolution characteristics of the aquaculture land during the recent 20 years were analyzed comprehensively.[Results]Results showed that from 1995 to 2015,the spatial temporal evolution in Guangxi Beibu Gulf coastal changed significantly.The aquaculture area increased first and then decreased.From 1995 to 2010,the aquaculture area increased from 9 024.03 hm2 to 41 153.58 hm2,and then decreased to 38 903.95 hm2 in 2015.Comprehensive analysis leaded to the conclusion that the gravity center of the aquaculture area moved to the northwest on the whole,and the aquaculture land mainly distributed in Beihai.[Conclusion]The growth sources of aquaculture land in Beibu Bay were mainly cultivated land and coastal waters,while the loss of aquaculture land were mainly turned into construction land and abandoned land ,which leaded to the reduction of high ecological service value land (such as arable land and tidal flats),and the negative environmental effect (such as aquaculture pollution and natural coastline destruction).关键词
MNDWI水体指数/滨海养殖/时空演变/环境效应/广西北部湾Key words
modify normalize difference water index/coastal aquaculture/spatial and temporal change/environmental effects/Guangxi Beibu Gulf coastal分类
信息技术与安全科学引用本文复制引用
蒙静,华璀,张建兵,卢远..1995年-2015年广西海岸带养殖用地的时空分布[J].广西科学,2017,24(2):135-143,9.基金项目
广西自然科学基金项目(2014GXNSFAA118293)资助. （2014GXNSFAA118293）
