Change of Landscape Ecological Risk on Coastal Zone of Xiangshangang Bay

GUO Yi-xin; LI Jia-lin; XU Liang-hui; ZHENG Zhong-ming; QIAN Ying-ying; REN Li-yan; GUAN Jian

doi:10.3969/j.issn.1001-909X.2015.01.009

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Journal of Marine Sciences ›› 2015, Vol. 33 ›› Issue (1) : 62-68. DOI: 10.3969/j.issn.1001-909X.2015.01.009

Change of Landscape Ecological Risk on Coastal Zone of Xiangshangang Bay

GUO Yi-xin^1,2, LI Jia-lin^1,2, XU Liang-hui¹, ZHENG Zhong-ming³, QIAN Ying-ying¹, REN Li-yan¹, GUAN Jian⁴

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Abstract

Coastal landscape is the foundation of sustainable social and economic development in coastal areas .It is significant to make a analysis change of landscape ecological risk on coastal zone to optimize the evolution of the coastal landscape planning and rational development of landscape resources. The study, based on the Landsat TM/ETM+ remote sensing data of 1990-2010 and field survey ,analyzes the temporal-spatial change of landscape ecological risk on coastal zone of Xiangshangang bay. The results show that: (1) Over 20 years, Great changes of landscape patterns have taken place in Xiangshangang bay . The area of arable, sea, woodland decreased. While the area of construction land, unused land and farming land increased. (2) Since 1990, Xiangshangang coastal landscape ecological risk grade has constantly increasing trend. Some low, low grade of ecological risk area evolved in high grade and extremely high grade.(3) Judging from different levels of ecological risk from space area distribution ,It embodies in the space that the extremely low and low grade ecological risk areas shrink to upstream during 1990~2010, and the area show a downward trend. The medium, high and extremely high grade ecological risk areas expand to the coastal areas. In terms of the evolutionary rate, nearly 10 years of high and extremely high ecological risk area has significantly accelerated the rate of increase over the previous 10 years.

Key words

coastal zone / landscape / ecological risk evolution / Xiangshangang Bay

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GUO Yi-xin, LI Jia-lin, XU Liang-hui, ZHENG Zhong-ming, QIAN Ying-ying, REN Li-yan, GUAN Jian. Change of Landscape Ecological Risk on Coastal Zone of Xiangshangang Bay[J]. Journal of Marine Sciences. 2015, 33(1): 62-68 https://doi.org/10.3969/j.issn.1001-909X.2015.01.009

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