Acta Geographica Sinica ›› 2015, Vol. 70 ›› Issue (1): 131-142.doi: 10.11821/dlxb201501011

• Orginal Article • Previous Articles     Next Articles

Characteristics of landscape dynamic changes in Zhalong Wetland

Yuhong ZHANG1(), Liying SU2, Wanhui YU1, Hongyun ZHANG1   

  1. 1. Key Laboratory of Remote Sensing Monitoring of Geographic Environment, College of Heilongjiang Province, Harbin Normal University, Harbin 150025, China
    2. International Crane Foundation, Baraboo, Wisconsin 53913, USA
  • Received:2014-07-03 Revised:2014-09-28 Online:2015-01-20 Published:2015-06-17
  • Supported by:
    National Natural Science Foundation of China, No.41201183;Science and Technology Project Foundation of Heilongjiang Province Education Department, No.12531209;Youth Elite Planning Project of Harbin Normal University, No.KJB201201

Abstract:

As an internationally well known and ecological zone, Zhalong Wetland has undergone tremendous landscape changes based on hydrological pattern in recent decades. We defined a set of wetland classification system to describe the landscape changes by using Landsat TM images during 1979-2013, and analyzed the changes of landscape transition magnitude by landscape transition coefficient on a 5-year time scale. Four types of landscape dynamics were identified at Zhalong Wetland: stable landscape with regular and little magnitude, unstable landscape with irregular and normal magnitude; stable landscape with degraded and regular magnitude; unstable landscape with irregular and huge magnitude. The results show that: wetland landscape tended to be wet before 1989 with smaller magnitude, and tended to dry after 1989. In terms of dynamics, the area of A landscape (973.60 km2) is mainly distributed in the core area and farmland; the area of D landscape (311.92 km2) is mainly in the sites of human disturbance, such as on both sides of large ditches and dams.

Key words: landscape dynamics, landscape transition magnitude, Zhalong Wetland