[1]覃弼勇,黄肖寒,陈燕丽,等.近20年河池市植被覆盖度时空演变特征[J].气象研究与应用,2021,42(02):41-45.[doi:10.19849/j.cnki.CN45-1356/P.2021.2.08]
　Qin Biyong,Huang Xiaohan,Chen Yanli,et al.Spatiotemporal evolution characteristics of vegetation coverage in Hechi in recent 20 years[J].Journal of Meteorological Research and Application,2021,42(02):41-45.[doi:10.19849/j.cnki.CN45-1356/P.2021.2.08]
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近20年河池市植被覆盖度时空演变特征()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第42卷
期数:
2021年02期
页码:
41-45
栏目:
研究论文
出版日期:
2021-07-06

文章信息/Info

Title:
Spatiotemporal evolution characteristics of vegetation coverage in Hechi in recent 20 years
作者:
覃弼勇1;  黄肖寒1;  陈燕丽2;  莫建飞2;  韦春苗1
1. 河池市气象局, 广西 河池 547000;
2. 广西壮族自治区气象科学研究所, 南宁 530022
Author(s):
Qin Biyong1;  Huang Xiaohan1;  Chen Yanli2;  Mo Jianfei2;  Wei Chunmiao1
1. Hechi Meteorological Bureau, Hechi Guangxi 547000;
2. Guangxi Institute of Meteorological Sciences, Nanning Guangxi 530022
关键词:
植被覆盖度; 归一化植被指数; 河池市; MODIS
Keywords:
vegetation coverage; normalized vegetation index; Hechi City; MODIS
分类号:
P49
DOI:
10.19849/j.cnki.CN45-1356/P.2021.2.08
摘要:
利用2000-2019年MODIS卫星遥感数据获取的归一化植被指数（NDVI）数据，通过像元线性分解模型、最大值合成法等方法计算河池市植被覆盖度，对河池市植被覆盖度时空变化趋势和特征进行分析。结果表明，近20a河池市植被覆盖度整体呈增加趋势，上升速率为6.84%·（10a）-1，月最大、最小值分别出现在8月、2月，植被覆盖度在夏季最大、冬季最小；2011-2015年和2016-2019年两个时段的植被覆盖度有了明显改善，其中2016-2019年植被覆盖度的较高及其以上等级的面积占比为98.09%；河池市99.4%区域的植被覆盖度变化趋势为正向变化，大化县西部、巴马县南部及环江中西部等区域的年变化趋势率明显高于全市植被覆盖度年变化速率。
Abstract:
Based on the normalized vegetation index(NDVI) data obtained from MODIS satellite remote sensing data from 2000 to 2019, the vegetation coverage of Hechi City was calculated by pixel linear decomposition model and maximum value synthesis method, and the temporal and spatial variation trend and characteristics of vegetation coverage of Hechi City were analyzed. The results showed that in recent 20 years, the vegetation coverage of Hechi City showed an increasing trend with an increasing rate of 6.84%(10a)-1. The maximum and minimum values of each month appeared in August and February respectively, and the vegetation coverage was the largest in summer and the lowest in winter. In 2011-2015 and 2016-2019, the vegetation coverage had improved significantly, and the area with higher vegetation coverage and above in 2016-2019 accounted for 98.09%. The change trend of vegetation coverage in 99.4% areas of Hechi was positive, and the annual change trend rate in the west of Dahua County, the south of Bama County and the middle and west of Huanjiang County was significantly higher than that in the whole city.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2020-08-03。
作者简介:覃弼勇(1995-),助理工程师,从事天气预报及生态气象服务。E-mail:826000173@qq.com
更新日期/Last Update: 1900-01-01