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林业资源管理 ›› 2018, Vol. 0 ›› Issue (4): 41-46.doi: 10.13466/j.cnki.lyzygl.2018.04.008

• 科学研究 • 上一篇    下一篇

2003—2016年东洞庭湖自然保护区湿地动态变化特征

黄一凡1(), 王金生1, 王凯2, 杨眉3   

  1. 1.北京师范大学 水科学研究院 地下水污染控制与修复教育部工程研究中心,北京 100875
    2.长江勘测规划设计研究有限责任公司,武汉 430010
    3.国华卫星应用产业基金管理有限公司,北京 100044
  • 收稿日期:2018-05-03 修回日期:2018-05-29 出版日期:2018-08-28 发布日期:2020-09-25
  • 作者简介:黄一凡(1984-),男,辽宁人,在读博士,主要研究方向为长江流域生态环境建设与保护、三峡工程泥沙问题。Email:huangyifan2005@hotmail.com
  • 基金资助:
    国家自然科学基金(41672228);国家重大水专项(2014ZX07201-010)

Dynamic Characteristics of the Wetland of East Dongting Lake Nature Reserve from 2003 to 2016

HUANG Yifan1(), WANG Jinsheng1, WANG Kai2, YANG Mei3   

  1. 1. College of Water Sciences,Beijing Normal University,Engineering Research Center of Groundwater Pollution Control and Remediation,Ministry of Education,Beijing 100875,China
    2. Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China
    3. Guohua Satellite Fund Management Co.,Ltd.,Beijing 100044,China
  • Received:2018-05-03 Revised:2018-05-29 Online:2018-08-28 Published:2020-09-25

摘要:

基于中分辨率成像光谱仪(MODIS)遥感数据的MOD13Q1系列产品,利用决策树分类法,对东洞庭湖自然保护区2003—2016年共322个时相的16d合成数据进行分类解译,得到2003—2016年时间序列的东洞庭湖水体湿地、泥滩湿地、草滩湿地、芦苇湿地分类结果,分析了分类精度,以及水体湿地和草滩湿地的年际间及年内变化趋势及其主导因子。结论:1)决策树分类法应用于时间序列的东洞庭湖MODIS遥感影像分类,其分类精度处于可接受范围;2)2003—2016年(三峡工程蓄水运行期)东洞庭湖水体和草滩湿地面积最大最小值未发生年际间的明显变化;3)东洞庭湖水体和草滩湿地面积随着水文节律发生年内周期性波动,二者具有较好的线性回归关系。研究认为:将东洞庭湖水位控制在合理区间是维护生态系统健康的关键。

关键词: 长江中下游, 东洞庭湖, 决策树分类法, 湿地, MODIS, 三峡工程

Abstract:

Based on the product of MOD13Q1 of MODIS (Moderate Resolution Imaging Spectroradiometer),this paper dealt with 322 available images from 2003 to 2016 by using decision tree classification method,and then got a time-based series of classified data about water,mud flats,grassland,and reed of wetland in East Dongting Lake.It analyzed the degree of accuracy of the classification results,and the annual and interannual variation trends of water and grassland of wetland,as well as the key driving factors,summarized that:(1)it is acceptable of the degree of accuracy which was calculated from the classification results by using the decision tree method on the series data of MODIS images from East Dongting Lake.(2)There is no significant interannual variety of the area of water and grassland of wetland from 2003 to 2016,when the construction and operation of the Three Gorges Dam was underway.(3)Area of water and grassland of wetland varies with the hydrological rhythm,and there is an extremely significant negative correlation between them.This paper proposed that,water level is the key factor of the ecosystem of East Dongting Lake,it is crucial to keep it in a reasonable range to maintain the health of ecosystem.

Key words: the lower and middle reaches of the Yangtze River, East Dongting Lake, decision tree classification method, wetland, MODIS, the Three Gorges Dam

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