生态环境

广东沿海赤潮发生频率差异与城市发展的关系

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  • 1. 华南师范大学地理系, 广州 510631; 2 广东省生态环境与土壤研究所, 广州 510650
刘晓南 (1980-), 男, 硕士研究生, 研究方向为区域环境变化与管理。E-mail: xnliu@soil.gd.cn

收稿日期: 2004-01-20

  修回日期: 2004-10-20

  网络出版日期: 2004-11-25

基金资助

广东省自然科学基金项目 (031529, 031288)

The Relation Between Differences of Red Tide Frequency and Economic Development along the Coasts of Guangdong

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  • 1. South China Normal University, Guangzhou 510631, China;
    2. Guangdong Institute of Eco-environment and Soil Science, Guangzhou 510650, China

Received date: 2004-01-20

  Revised date: 2004-10-20

  Online published: 2004-11-25

Supported by

Natural Science Fund of Guangdong Province, No.031529, 031288

摘要

将广东沿海划分成粤东、珠江口和粤西3个区域,采用每个区域主要城市有关经济指标与广东沿海1980~2002年赤潮发生频率的统计数据进行对比分析。研究结果表明:22年间广东沿海出现了2次赤潮高峰期,分别为1987~1992年和1998~2000年;珠江口海域为珠江水系入海口集中区域,广东陆源污染物集中于此出海,是赤潮发生的敏感区域。随城市的发展,陆源污染物进入海洋的数量加大,临近城市化发展较快的珠江口海域赤潮出现的频率高于其他城市化相对较慢的海域,同时沿海城市经济快速发展的时期也是赤潮出现的高峰期。

本文引用格式

刘晓南,王为,吴志峰 . 广东沿海赤潮发生频率差异与城市发展的关系[J]. 地理学报, 2004 , 59(6) : 911 -917 . DOI: 10.11821/xb200406014

Abstract

Red tides are one of the main coastal catastrophic events of Guangdong Province, China. The comparison between the numbers of red tide events and the development indexes of cities along the coasts of the province shows that the regional differences in red tide outbreaks has a close relation to those in the coastal urban developments. The cause for an initiation of red tide blooms may be natural ones, but wastewater caused by the fast development of population, industry and aquiculture of the coastal cities enhanced the blooms. It may explain why the two periods of frequent outbreaks of the red tides from 1998 to 2000 matched the urban developments in the coastal areas of Guangdong not only spatially but also temporally. The red tides in the first period were restricted only on the coasts of middle Guangdong, where the urbanization were rapider than the other coastal areas of the province. In second period, fast increments in the development of the coastal cities in east Guangdong leaded to an increase in occurrence of red tides in the sea areas of the same coasts.

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