地理科学 ›› 2014, Vol. 34 ›› Issue (7): 870-875.doi: 10.13249/j.cnki.sgs.2014.07.870

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红壤侵蚀区马尾松林碳储量估算的遥感植被指数选择——以长汀河田地区为例

曾宏达1,2(), 徐涵秋1(), 谢锦升2, 黄绍霖1, 陈文惠2   

  1. 1. 福州大学环境与资源学院 福州大学遥感信息工程研究所, 福建 福州 350108
    2. 福建师范大学地理科学学院 湿润亚热带山地生态国家重点实验室培育基地, 福建 福州 350007
  • 收稿日期:2013-06-07 修回日期:2013-08-18 出版日期:2014-07-10 发布日期:2014-07-10
  • 作者简介:

    作者简介:董玉祥(1964-),男,河南西平人,博士,教授,主要从事海岸风沙地貌和土地资源开发利用与保护方面的教学与研究。E-mail:eesdyx@mail.sysu.edu.cn

  • 基金资助:
    国家“973”计划前期研究课题(2012CB722203)、福建省自然科学基金(2010J01138)资助

Selection of Vegetation Indices for Estimating Carbon Storage of Pinus massoniana Forest in a Reddish Soil Erosion Region: A Case Study in Hetian Area of Changting County, Fujian Province, China

Hong-da ZENG1,2(), Han-qiu XU1(), Jin-sheng XIE2, Shao-lin HUANG1, Wen-hui CHEN2   

  1. 1. College of Environment and Resources, Fuzhou University; Institute of Remote Sensing Information Engineering, Fuzhou University; Fuzhou,Fujian 350108, China
    2. College of Geographical Sciences, Fujian Normal University, State Key Laboratory of Humid Subtropical Mountain Ecology, Fuzhou,Fujian 350007, China
  • Received:2013-06-07 Revised:2013-08-18 Online:2014-07-10 Published:2014-07-10

摘要:

以福建省长汀县河田地区为研究区,在野外样方生物量调查和典型植被光谱测定基础上,对比分析SPOT5影像8种植被指数与马尾松林(Pinus massoniana)碳储量关系,估算区域尺度马尾松林碳储量。结果表明,马尾松林冠层与林下植被芒萁(Dicranopteris dichotoma)在短波红外波段(SWIR)反射率区分明显。加入SWIR的修正的归一化植被指数(MNDVI)与森林碳储量回归决定系数最高,并有较小的均方根误差,同时可减少林下植被覆盖对马尾松林碳储量估算影响。生态恢复驱动下研究区平均碳储量增加到30.37 t/hm2

关键词: 红壤侵蚀区, 长汀河田地区, 碳储量, 马尾松, 遥感植被指数

Abstract:

The Hetian area of Changting County in Fujian Province was selected as a case to examine the quantitative relationship between eight remote sensing vegetation indices (VIs) and the forest carbon storage in the Hetian area by plot sampling and analysis of biomass allometric equations and SPOT-5 imagery. We then estimated the carbon storage of Pinus massoniana forest for the area. The results show that the spectral reflectance of Pinus massoniana canopy and its understory vegetation, Dicranopteris dichotoma could be clearly distinguished in SWIR(Short Wave Infrared) band. The degree of agreement between the VI and the carbon storage of the forest are different among the eight used indices, with the MNDVI (Modified Normalized Difference Vegetation Index) having the highest R2 value and second smallest RMSE value. The VI constructed with a SWIR band could reduce the overestimation in the forest’s carbon storage caused by the effects of understory vegetation. After 30 years’ effort of management to reduce soil loss in the area, particularly in the past 10 years, the ecologically restored carbon under the Pinus massoniana forest has reached to 30.37 t/hm2 on average.

Key words: reddish soil erosion area, Hetian area of Changting County, carbon storage, Pinus massoniana, remote sensing vegetation index

中图分类号: 

  • S771.8/Q948