Spatio-Temporal Evolution Process of Vegetation Coverage of Hydro-Fluctuation Belt 
in Three Gorges Reservoir Based on GIS-RS

doi:10.3969/j.issn.1674-0696.2018.06.09

Abstract

Abstract: The Fuling Hydro-Fluctuation Belt in the Three Gorges Reservoir was taken as a case study to carry out land use classification of hydro-fluctuation belts and estimate vegetation coverage of hydro-fluctuation belts based on remote sensing and geographic information systems.The CA-Markov model was used to calculate the transition probability matrix wetland use type，and at the same time the CA-Markov model was used to simulate the wetland landscape pattern of the study area in 2018，2023，2028，and 2033.The results show that for the hydro-fluctuation belt in a year or two，with this short a period，vegetation cover type will undertake relatively large changes with low stability and long-term change is stabilized，especially for the first time in 2008 after a 175m water test; For spatial pattern，terrestrial plants and wetland plants belong mostly to the category internal transfer，namely，terrestrial turned wet.The overall vegetation coverage is slightly reduced but later is basically stabilized at nearly 50% of the total vegetation in a later period of time.

Key words: environmental engineering, GIS-RS, hydro-fluctuation belt, vegetation coverage, CA-Markov

摘要： 以三峡水库涪陵区段消落带为研究区域，对2003、2004、2008、2010、2013年的消落带土地利用类型进行分类与统计，估算消落带植被覆盖度，运用CA-Markov模型计算各时期消落带的土地利用类型概率转移矩阵，并运用CA-Markov模型模拟研究区2018、2023、2028、2033年湿地利用类型格局分布图。研究结果表明：在时间跨度上，消落带在1年或2年这样的短时期内，植被覆盖类型会发生比较大的变化，稳定性不高，长期变化则趋于稳定，尤其是在2008年首次实现175 m蓄水试验之后；在空间格局上，陆生植物与湿生植物大部分属于类别内部转移，即陆生转为湿生，总体植被覆盖度小幅降低，但后期基本稳定在各占植被类型50%左右。

关键词: 环境工程, GIS-RS, 消落带, 植被覆盖度, CA-Markov模型

CLC Number:

O319.56

GUAN Dongjie1，2，QU Sijia1，YANG Shanshan1, HE Xiujuan1. Spatio-Temporal Evolution Process of Vegetation Coverage of Hydro-Fluctuation Belt in Three Gorges Reservoir Based on GIS-RS[J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(06): 56-62.

官冬杰1，2，瞿思佳1，杨姗姗1，和秀娟1. 基于GISRS的三峡库区消落带植被覆盖时空演变过程[J]. 重庆交通大学学报（自然科学版）, 2018, 37(06): 56-62.

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Spatio-Temporal Evolution Process of Vegetation Coverage of Hydro-Fluctuation Belt in Three Gorges Reservoir Based on GIS-RS

基于GISRS的三峡库区消落带植被覆盖时空演变过程

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