[1]张涛,佟光臣,任琼,等.基于MODIS数据的宁波市植被覆盖时空变化研究[J].浙江水利科技,2017,(01):005-9.[doi:10.13641/j.cnki.33-1162/tv.2017.01.002]
 ZHANG Tao,TONG Guang-chen,Ren Qiong,et al.Dynamic Monitoring of the Fractional Vegetation Cover in Ningbo City Based on MODIS-NDVI Data[J].Zhejiang Hydrotechnics,2017,(01):005-9.[doi:10.13641/j.cnki.33-1162/tv.2017.01.002]
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基于MODIS数据的宁波市植被覆盖时空变化研究
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《浙江水利科技》[ISSN:1008-701X/CN:33-1080/TV]

卷:
期数:
2017年01
页码:
005-9
栏目:
出版日期:
2017-01-25

文章信息/Info

Title:
Dynamic Monitoring of the Fractional Vegetation Cover in Ningbo City Based on MODIS-NDVI Data
作者:
张涛1 佟光臣2 任琼3 林杰4
1. 宁波市水利水电规划设计研究院, 浙江 宁波 315192;
2. 浙江省宁海县水利局, 浙江 宁海 315600;
3. 江西省林业科学院, 江西 南昌 330032;
4. 南京林业大学林学院, 江苏 南京 210037
Author(s):
ZHANG Tao1 TONG Guang-chen2 Ren Qiong3 LIN Jie4
1. Ningbo Hydraulic Waterpower Planning and Designing Research Institution, Ningbo 315192, Zhejiang, China;
2. Ninghai Water Conservancy Bureau, Ninghai 315600, Zhejiang, China;
3. Jiangxi Academy of Forestry, Nanchang 330032, Jiangxi, China;
4. College of Forest, Nanjing Forestry University, Nanjing 210037, Jiangsu, China
关键词:
植被覆盖度MODIS-NDVI宁波市
Keywords:
fractional vegetation coverMODIS-NDVINingbo City
分类号:
TP79
DOI:
10.13641/j.cnki.33-1162/tv.2017.01.002
文献标志码:
A
摘要:
基于MODIS-NDVI数据,利用像元二分模型定量估算了宁波市2001-2015年3期植被覆盖度,并定量分析了近15 a来宁波市植被覆盖时空变化特征。结果表明:①宁波市平均植被覆盖度从2001年的68.4%一直下降到2015年的63.0%,整体呈下降趋势。②2001-2015年研究区内5等级植被覆盖占绝对优势,3期面积占比均在40%以上;1、2等级植被覆盖面积呈逐渐增大趋势,4、5等级恰好相反,而3等级则先增大后减小;整个研究区植被变化等级具有变化等级越高变化面积越小的特点。③1、2等级植被覆盖重心向东北方向分别移动了5 583.6 m和2 416.0 m,3、5等级重心分别向西南方向移动了3 390.6 m和1 158.0 m,4等级重心向东南方向移动了12 891.5 m,其中移动距离5等级最近,4等级最远,反映出宁波市东北部植被覆盖退化较为明显,西南方向植被覆盖有轻微改善现象,而东南方向部分较高植被覆盖改善明显。
Abstract:
Based on MODIS-NDVI data,this paper used the dimidiate pixel model to quantitatively estimate vegetation coverage of Ningbo city during three periods from 2001 to 2015 and made a quantitative analysis on the temporal and spatial variations of vegetation cover in Ningbo city in recent 15 years. Results showed that:① The average vegetation coverage of Ningbo City has been declining from 68.4% in 2001 to 63.0% in 2015 with an overall a downward trend. ② In the study area, Grade 5 vegetation dominated from 2001 to 2015 with an area ratio of above 40.0% in three periods;the coverage ranges of Grade 1 and 2 vegetation were gradually increasing,while the Grade 4 and 5 were just the opposite,and the Grade 3 was first increased and then decreased;the whole study area of vegetation change level showed a trend of higher grade and lower area. ③The centroid of Grade 1 and 2 vegetation cover respectively moved 5 583.6 m and 2 416.0 m to the northeast; the centroid of Grade 3 and 5 respectively moved 3 390.6 m and 1 158.0 m to the southwest;the centroid of Grade 4 moved 12 891.5 m to the southeast. The moving distance of Grade 5 vegetation was the shortest and that of Grade 4 was the longest, reflecting the degradation of the vegetation cover in Northeast of Ningbo City was more obvious. The vegetation coverage in southwest had slightly improved,while the higher vegetation coverage in southeast improved significantly. The research results provided a scientific basis for the urban planning and ecological environment construction for Ningbo city.

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备注/Memo

备注/Memo:
收稿日期:2016-10-28。
作者简介:张涛(1985-),男,工程师,硕士,主要从事生产建设项目水土保持方案编制与监测。E-mail:191866076@qq.com
通讯作者:林杰(1976-),女,副教授,博士,主要从事土壤侵蚀遥感监测研究。E-mail:jielin@njfu.edu.cn
更新日期/Last Update: 2017-02-18