基于遥感空间信息的武夷山国家级自然保护区植被覆盖度变化与生态质量评估

doi:10.13287/j.1001-9332.202002.014

应用生态学报 ›› 2020, Vol. 31 ›› Issue (2): 533-542.doi: 10.13287/j.1001-9332.202002.014

基于遥感空间信息的武夷山国家级自然保护区植被覆盖度变化与生态质量评估

杨绘婷^1,2, 徐涵秋^1,2*

¹福州大学环境与资源学院, 空间数据挖掘与信息共享教育部重点实验室, 福州 350116;
²福州大学遥感信息工程研究所, 福建省水土流失遥感监测评价重点实验室, 福州 350116

收稿日期:2019-07-23 出版日期:2020-02-15 发布日期:2020-02-15
通讯作者: * E-mail: hxu@fzu.edu.cn
作者简介:杨绘婷, 女, 1994年生, 硕士研究生。主要从事环境资源遥感应用研究。E-mail: htyfzu@163.com
基金资助:
本文由国家自然科学基金(31971639)资助

Assessing fractional vegetation cover changes and ecological quality of the Wuyi Mountain National Nature Reserve based on remote sensing spatial information

YANG Hui-ting^1,2, XU Han-qiu^1,2*

¹Ministry of Education Key Laboratory of Spatial Data Mining & Information Sharing, College of Environment and Resources, Fuzhou University, Fuzhou 350116, China;
²Fujian Provincial Key Laboratory of Remote Sensing of Soil Erosion, Institute of Remote Sensing Information Engineering, Fuzhou University, Fuzhou 350116, China

Received:2019-07-23 Online:2020-02-15 Published:2020-02-15
Contact: * E-mail: hxu@fzu.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (31971639).

摘要/Abstract

摘要： 成立于1979年的武夷山国家级自然保护区,是中国东南部面积最大、保留最为完整的中亚热带森林生态系统,对其成立40年以来的植被及其生态质量的变化迄今并无研究涉及。本研究选取1979—2017年的5景Landsat系列影像,借助MODIS的归一化植被指数(NDVI)数据对Landsat影像的NDVI数据进行植被的时相纠正,通过计算植被覆盖度(FVC)和遥感生态指数(RSEI)来评估武夷山国家级自然保护区植被覆盖度及其生态质量的变化。结果表明: 通过近40年的保护,保护区的植被覆盖度有明显提升,从1979年的73.6%上升到2017年的89.5%;生态质量也随之上升,从1988年的0.801上升到2017年的0.823。2017年,整个保护区生态质量为优、良等级的面积占总面积的98.7%。从空间分布来看,生态变好的区域主要分布在东北核心区和西南核心区中部;变差的区域主要分布于道路两侧和山顶。在垂直高程上,以高程1300~1900 m范围内的植被覆盖度和生态质量最好。除了局部年份可能受到气候的影响外,武夷山国家级自然保护区植被和生态质量的改善主要得益于当地政府的有效政策和群众的积极保护。

Abstract: The Wuyi Mountain National Nature Reserve (WYS), established in 1979, is the largest and most intact subtropical forest ecosystem in southeastern China. No study has assessed the vegetation coverage change along with its ecological effect after the protection of the reserve for almost 40 years. In this study, the NDVI data of Landsat Image was corrected using the NDVI data of MODIS, the fractional vegetation cover (FVC) and the remote sensing based ecological index (RSEI) were calculated to assess the change of FVC and ecological quality in WYS with five Landsat images representing a period from 1979 to 2017. The results showed that after protection for nearly 40 years the FVC of the reserve had been significantly increased from 73.6% in 1979 to 89.5% in 2017, which consequently improved ecological quality from 0.801 in 1988 to 0.823 in 2017. In 2017, the area with the good and excellent ecological quality grades accounted for 98.7% of the total. Spatially, the ecologically-improved areas mainly distributed in the northeast core area and the center of the southwest core area. The ecologically-declined areas mostly occurred along roadsides and peaks. Vertically, the highest FVC and ecological quality areas distributed in the elevations between 1300-1900 m. In general, the improvement of FVC and ecological quality in the Wuyi Mountain National Nature Reserve was due largely to the effective policies and the successful protection by local government and people, except for some special year that may be affected mainly by climate conditions.

杨绘婷, 徐涵秋. 基于遥感空间信息的武夷山国家级自然保护区植被覆盖度变化与生态质量评估[J]. 应用生态学报, 2020, 31(2): 533-542.

YANG Hui-ting, XU Han-qiu. Assessing fractional vegetation cover changes and ecological quality of the Wuyi Mountain National Nature Reserve based on remote sensing spatial information[J]. Chinese Journal of Applied Ecology, 2020, 31(2): 533-542.

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基于遥感空间信息的武夷山国家级自然保护区植被覆盖度变化与生态质量评估

Assessing fractional vegetation cover changes and ecological quality of the Wuyi Mountain National Nature Reserve based on remote sensing spatial information

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