[1]张成才,娄 洋,李 颖,等.基于像元二分模型的伏牛山地区植被覆盖度变化[J].水土保持研究,2020,27(03):301-307.
　ZHANG Chengcai,LOU Yang,LI Ying,et al.Change of Vegetation Coverage in Funiu Mountain Regions Based on the Dimidiate Pixel Model[J].Research of Soil and Water Conservation,2020,27(03):301-307.
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基于像元二分模型的伏牛山地区植被覆盖度变化

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 27 期数: 2020年03期 页码: 301-307 栏目: 目次 出版日期: 2020-04-20
Title:
Change of Vegetation Coverage in Funiu Mountain Regions Based on the Dimidiate Pixel Model
文章编号:
1005-3409(2020)03-0301-07
作者:
张成才1, 娄 洋1, 李 颖2,3, 姬兴杰4, 董萌佳5
(1.郑州大学 水利科学与工程学院, 郑州 450001; 2.中国气象局 河南省农业气象保障与应用技术重点开放实验室, 郑州 450003; 3.河南省气象科学研究所, 郑州 450003; 4.河南省气候中心, 郑州 450001; 5.河南省白沙水库管理局, 河南 禹州 461670)
Author(s):
ZHANG Chengcai1, LOU Yang1, LI Ying2,3, JI Xingjie4, DONG Mengjia5
(1.School of Water Conservancy Engineering, ZhengZhou University, ZhengZhou 450001, China; 2.CMA-Hennan Key Laboratory of Agrometeorological Support and Applied Technique, Zhengzhou 450003, China; 3.Henan Institute of Meteorological Sciences, Zhengzhou 450003, China; 4.Henan Climate Centre, ZhengZhou 450001, China; 5.Henan Baisha Reservoir Administrative Bureau, Yuzhou, Henan 461670, China)
关键词:
植被覆盖度;  像元二分模型;  时空变化;  气象因子
Keywords:
vegetation coverage;  dimidiate pixel model;  temporal changes;  meteorological factor
分类号:
Q948.2
文献标志码:
A
摘要:
植被覆盖度是反映区域生态环境的重要参数,研究植被覆盖度对评估区域生态环境质量具有重要意义。选用2000—2018年每年4—9月的MODIS NDVI数据基于像元二分模型对伏牛山地区逐月进行了植被覆盖度的反演,运用一元回归分析法,Hurst指数法,马尔科夫模型分析了伏牛山地区植被覆盖度的时空变化,并探究气象因子对植被覆盖度的影响。结果表明:(1)研究区植被覆盖较好,覆盖度的分布整体上呈现中间高,四周低的特点。(2)研究区内不同等级的植被覆盖度转化方式主要是由低水平覆盖度区向高水平覆盖度区的转化。(3)2000—2018年研究区内有68%的地区其植被覆盖度呈增加趋势,表明近19年来伏牛山地区植被覆盖度整体呈上升趋势。(4)预计未来研究区内植被覆盖度呈减少趋势的地区占46%,呈增加趋势的地区仅占26%,由此可见伏牛山地区植被覆盖度未来的变化预计以减少为主。(5)伏牛山地区植被覆盖度的变化与气温和降水均呈现较强相关,其中气温是影响伏牛山地区植被覆盖度变化的主要因子。进一步分析该地区森林区域发现森林区域的植被覆盖度同样受气温的影响较大。
Abstract:
Vegetation coverage is an important parameter that reflects regional ecological environment. Research for vegetation coverage is important to assess the quality of regional ecological environment. We select the MODIS NDVI data from 2000—2018 to calculate the monthly vegetation coverage of the Funiu Mountain area based on the dimidiate pixel model. One element linear regression, Hurst Index Method, Markov Model were used to analyze the temporal changes and investigate the effect of meteorological factors for the vegetation coverage changes. The results showed that:(1)the vegetation coverage in the study area was favorable, and the distribution of coverage was generally high in the middle and low in the surrounding areas;(2)the conversion of different levels of vegetation coverage in the study area was mainly from the low level coverage area to the high level coverage area;(3)in the period 2000—2018, vegetation coverage showed the increase in 68% of the study area, indicating that the vegetation coverage in the Funiu Mountain area had increased in the past 19 years;(4)it is estimated that the area with decreasing trend of vegetation coverage will make up 46% of the research area, and the area with increasing trend of vegetation coverage will only account for 26% of the research area in the future; it can be seen that the future changes of vegetation coverage in Funiu Mountain area are expected to decrease;(5)the change of vegetation coverage in the Funiu Mountain area is strongly correlated with temperature and precipitation. And the temperature is the main factor affecting the change of vegetation coverage in Funiu Mountain. Further analysis of the forest area in this area found that the vegetation coverage in the forest area was also greatly affected by temperature.

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备注/Memo

收稿日期:2019-06-04 修回日期:2019-08-06资助项目:气候变化专项课题(CCSF201934); 国家自然科学基金(41805090); 中国气象局:河南省农业气象保障与应用技术重点开放实验室开放项目(AMF201802,AMF201807)第一作者:张成才(1964—),河南郸城人,男,教授,主要从事遥感技术及其研究。E-mail:zhangcc2000@163.com娄洋(1993—),河南郑州人,男,硕士在读,主要从事遥感技术及其应用。E-mail:648643138@qq.com通信作者:李颖(1984—),河南郑州人,女,博士学位、高级工程师,主要从事农业遥感与生态遥感。E-mail:walnutclip@163.com

更新日期/Last Update: 2020-04-30