Comparison of land use/land cover change and landscape patterns in Honghe National Nature Reserve and the surrounding Jiansanjiang Region,China |
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| Institution: | 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;2. South China Institute of Environment Sciences, Ministry of Environment Protection of PRC, Guangzhou 510535, China;3. Center for Water Resource and Environment, Sun Yat-Sen University, Guangzhou 510275, China;4. The Prairie Research Institute, University of Illinois at Urbana-Champaign, 2204 Griffith Drive, Champaign, IL 61820, USA;1. Centre for Chinese Agricultural Policy, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, People''s Republic of China;2. Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, People''s Republic of China;3. University of Chinese Academy of Sciences, Beijing 100049, China;4. Department of Agricultural Economics and Farm Management, Federal University of Agriculture, Abeokuta (FUNAAB), Ogun State, Nigeria |
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| Abstract: | Land use and land cover change (LUCC) determines landscape patterns and affects the ability of ecosystems to provide the services and biodiversity on which humans ultimately depend. The Honghe National Nature Reserve is a biodiversity-rich area in the Jiansanjiang region of northeast China. In this study, the LUCC and landscape patterns were compared between the reserve and the Jiansanjiang region. With remote sensing (RS) and geographic information system (GIS) procedures, satellite images from 1989, 2001 and 2010 were used to calculate dynamics of LUCC amplitudes, landscape pattern index, transition matrix. The influence of LUCC on the wetland landscape of the nature reserve was discussed in the context of broader LUCC analyses. The results showed that land uses in the studied regions changed remarkedly over the time period; swamp area declined significantly as arable land increased. The ecological landscape index showed that distinct landscape patches were small, scattered and highly fragmented, moving toward a more monotonous landscape. Anthropogenic activities such as farming directly decreased the wetland landscape diversity. Furthermore, anthropogenic factors diminished wetland areas indirectly through climatic factors, namely air temperature and precipitation levels. National and regional policies on agriculture and water use have been highly influential, and the Honghe National Nature Reserve is highly susceptible to land use changes in the surrounding Jiansanjiang region. |
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| Keywords: | Land use/land cover change Landscape pattern Landscape index Landsat Wetland Nature reserve |
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