文献类型：期刊文献

中文题名：海南东寨港红树林急速退化的空间分布特征及影响因素分析

英文题名：Spatial patterns and environmental factors of rapidly degraded mangroves at Dongzhaigang Harbor in Hainan

作者：孙艳伟[1] 廖宝文[1] 管伟[1] 王荣丽[1] 丁冬静[1] 钟才荣[2]

第一作者：孙艳伟

机构：[1]中国林业科学研究院热带林业研究所;[2]海南东寨港国家级自然保护区管理局

年份：2015

卷号：36

期号：6

起止页码：111-118

中文期刊名：华南农业大学学报

外文期刊名：Journal of South China Agricultural University

收录：CSTPCD;;Scopus;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：科技部林业公益性行业科研专项(201404305);国家自然科学基金(41176084);国家林业局海南东寨港红树林生态站项目

语种：中文

中文关键词：东寨港;红树林;退化特征;空间分布;影响因素

外文关键词：Dongzhaigang Harbor; mangrove forest ; degradation characteristic ; spatial pattern ; influencing factor

分类号：Q149

摘要：【目的】对我国一些红树林湿地生态系统近期出现的急速退化现象作相关分析.【方法】以海南东寨港整个港湾红树林区为研究典型区域,应用3S技术,分析近30年间东寨港红树林湿地景观格局的演变过程;同时采用高分辨率影像数据,聚焦分析了演丰东河沿岸、塔市及三江3个片区红树林群落退化特征及空间分布规律;结合大量野外样方调查数据,系统分析了近海岸红树林生态系统退化的主要影响因素.【结果和结论】从1999—2013年,东寨港红树林面积由1 709.4 hm2减少至1 679.5 hm2,年均减少2.1 hm2.而沿海岸线2 km缓冲区范围内,周边养殖塘面积则由1987年的59.1 hm2增至2013年的1 986.9 hm2.截止2013年,东寨港红树林枯死面积约为4 hm2.从空间分布上来看,红树林枯死群落主要分布于地形低洼积水处或污染物传输通道两侧.东寨港河流型红树林群落退化最为严重,集中分布于演丰东河中下游河段;同时,近海湾的前沿地段也有退化群落零星分布.处于地带性演替后期的红树林群落,退化程度较高.陆源污染物输入强度是影响红树林退化群落分布的重要因素.
【Objective】The purpose of this study was to analyze mangrove degradation in some coastlands of southern China. 【Method】 Mangrove of Dongzhaigang Harbor in Hainan Province was investigated as a case study. Landscape pattern dynamics of mangrove wetland from 1987 to 2013 were analyzed at Dongzhaigang Harbor by interpreting five phase remote sensing images. The degradation characteristics of mangrove forest and its spatial patterns were also further studied using SPOT5 and aerial imagery. Furthermore, the influencing factors of mangrove degradation such as topographical factors and terrestrial contaminant loading were analyzed by surveying numerous sampling plots. 【Result and conclusion】 It was found that mangrove area decreased from 1 709.4 hm^2 in 1999 to 1 679.5 hm^2 in 2013, while the area of ponds in the 2 km coastal buffers increased from 59.1 hm^2 in 1987 to 1 986.9 hm^2 in 2013. The dead area of mangrove patches had reached 4 hm^2 by the end of 2013. Spatially, mangrove degradation mainly located in low-lying land and both sides of contaminant transport channels. The degradation degree of River-type mangrove communities was the most serious, whose major distribution was in the middle and lower reaches of Yanfengdong River. Meanwhile, the degraded mangrove communities also distributed sporadically in frontier areas of Dongzhaigang Harbor. The degradation degree was higher for mangrove communities in the climax stage of succession. The distribution of degraded mangrove communities was mainly determined by terrestrial pollutant loading.