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Changes in Landscape Pattern of Wetlands in the Pearl Rivers Estuary in the Past Two Decades

机译:过去二十年珍珠河河口湿地景观格局的变化

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The Pearl River Estuary, which is an important relay station and wintering area for waterfowls, is rich in a variety of wetlands resource. However, in recent decades, the industrialization and urbanization in the Pearl River Estuary had been developing rapidly, which changed the wetland landscape there dramatically. In this paper, based on remote sensing (RS) and geographic information system (GIS), several landscape pattern indices with obvious ecological significance were chosen to study changes in landscape pattern of wetlands in the Pearl River Estuary in the past two decades. Results showed that, over the past 20 years, the total area of wetlands in the Pearl River Estuary reduced by 700.62 hectares; the Landscape Diversity Index and Landscape Evenness Index continuously increased, suggesting that the dominance of shallow marine waters in the Pearl River Estuary had been weakened; the extent of the landscape fragmentation was serious, and the Contagion and the Aggregation Index dropped significantly, which suggested that the spatial distribution of wetland was scattered; the significant changes of landscape shape reflected the profound impact on wetland landscape of human activities.
机译:珠江河口,这是一个重要的中继站和水禽越冬地区,富含各种湿地资源。然而,近几十年来,珠江河口的产业化和城市化迅速发展,这急剧改变了湿地景观。本文在遥感(RS)和地理信息系统(GIS)的基础上,选择了几十年来研究珠江口湿地景观格局景观格局变化的几种景观格局指数。结果表明,在过去的20年里,珠江河口湿地的总面积减少了700.62公顷;景观多样性指数和景观均匀度指数不断增加,旨在削弱珠江河口浅海水域的主导地位;景观碎片的程度严重,传染和聚合指数显着下降,这表明湿地的空间分布散落;景观形状的重大变化反映了人类活动湿地景观的深刻影响。

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