中国地理科学(英文版) ›› 2009, Vol. 19 ›› Issue (4): 299-305.doi: 10.1007/s11769-009-0299-2

• 论文 •    下一篇

Land Use/Cover Changes and Environmental Consequences in Songnen Plain, Northeast China

LIU Dianwei1, WANG Zongming1, SONG Kaishan1, ZHANG Bai1, HU Liangjun2, HUANG Ni1, ZHANG Sumei1, LUO Ling1, ZHANG Chunhua1, JIANG Guangjia1   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
    2. Key Laboratory for Vegetation Ecology of Ministry of Education, Northeast Normal University, Changchun 130024, China
  • 收稿日期:2008-12-01 修回日期:2009-06-25 出版日期:2009-11-07 发布日期:2009-11-28
  • 通讯作者: WANG Zongming.E-mail:zongmingwang@gmail.com E-mail:zongmingwang@gmail.com
  • 基金资助:

    Under the auspices of Knowledge Innovation Programs of Chinese Academy of Sciences (No.KZCX2-YW-341);National Natural Science Foundation of China (No.40871187)

Land Use/Cover Changes and Environmental Consequences in Songnen Plain, Northeast China

LIU Dianwei1, WANG Zongming1, SONG Kaishan1, ZHANG Bai1, HU Liangjun2, HUANG Ni1, ZHANG Sumei1, LUO Ling1, ZHANG Chunhua1, JIANG Guangjia1   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;
    2. Key Laboratory for Vegetation Ecology of Ministry of Education, Northeast Normal University, Changchun 130024, China
  • Received:2008-12-01 Revised:2009-06-25 Online:2009-11-07 Published:2009-11-28
  • Supported by:

    Under the auspices of Knowledge Innovation Programs of Chinese Academy of Sciences (No.KZCX2-YW-341);National Natural Science Foundation of China (No.40871187)

摘要:

The Songnen Plain in Northeast China,one of the key national bases of agricultural production,went through remarkable land use/cover changes in recent years.This study aimed to explore the long-term land use/cover changes and the effects of these changes on the environment.The Landsat-based analysis showed that,during 1986-2000,cropland,built-up land and barren land had increased,among which cropland had the largest increase of 9,198km2 with an increase rate of 7.5%.Woodland,grassland,water body and swampland had decreased correspondingly,among which grassland had the most dramatic decrease of 6,127km2 with a decrease rate of 25.6%.The transition matrix results revealed that grassland,woodland and swampland were the three main land use types converted to cropland.Climate warming created the potential environment for the conversion of grassland and swampland into cropland.Land resources policy made by central and provincial governments of China affected the pattern and intensity of land use.Land use/cover changes accompanied by climatic variation brought out a series of environmental consequences,such as sand desertification of land,land salinization and alkalinization,grassland degradation,and more frequent floods.Under this circumstance,optimized land use structure and restoration measures are needed.

关键词: land use change, remote sensing, sustainable development, Songnen Plain, China

Abstract:

The Songnen Plain in Northeast China,one of the key national bases of agricultural production,went through remarkable land use/cover changes in recent years.This study aimed to explore the long-term land use/cover changes and the effects of these changes on the environment.The Landsat-based analysis showed that,during 1986-2000,cropland,built-up land and barren land had increased,among which cropland had the largest increase of 9,198km2 with an increase rate of 7.5%.Woodland,grassland,water body and swampland had decreased correspondingly,among which grassland had the most dramatic decrease of 6,127km2 with a decrease rate of 25.6%.The transition matrix results revealed that grassland,woodland and swampland were the three main land use types converted to cropland.Climate warming created the potential environment for the conversion of grassland and swampland into cropland.Land resources policy made by central and provincial governments of China affected the pattern and intensity of land use.Land use/cover changes accompanied by climatic variation brought out a series of environmental consequences,such as sand desertification of land,land salinization and alkalinization,grassland degradation,and more frequent floods.Under this circumstance,optimized land use structure and restoration measures are needed.

Key words: land use change, remote sensing, sustainable development, Songnen Plain, China