MODIS-NDVI-based mapping of the length of the growing season in northern Fennoscandia

被引：100

作者：

Karlsen, Stein Rune ^{[1
]}

Tolvanen, Anne ^{[2
]}

Kubin, Eero ^{[2
]}

Poikolainen, Jarmo ^{[2
]}

Hogda, Kjell Arild ^{[1
]}

Johansen, Bernt ^{[1
]}

Danks, Fiona S. ^{[1
]}

Aspholm, Paul ^{[3
]}

Wielgolaski, Frans Emil ^{[4
]}

Makarova, Olga ^{[5
]}

机构：

[1] Norut, No Res Inst Tromso, N-9294 Tromso, Norway

[2] Finnish Forest Res Inst, Muhos Res Unit, Muhos, Finland

[3] Bioforsk Soil & Environm Svanhovd, Svanhovd, Svanvik, Norway

[4] Univ Oslo, Dept Biol, N-0316 Oslo, Norway

[5] Pasvik State Nat Reserve, Rajakoski, Russia

来源：

INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION | 2008年 / 10卷 / 03期

关键词：

Northern Fennoscandia; MODIS-NDVI; decision rules; phenology; onset of the growing season; end of the growing season;

D O I：

10.1016/j.jag.2007.10.005

中图分类号：

TP7 [遥感技术];

学科分类号：

081102 ; 0816 ; 081602 ; 083002 ; 1404 ;

摘要：

Northern Fennoscandia is an ecologically heterogeneous region in the arctic/alpine-boreal transition area. Phenology data on birch from 13 stations and 16-day MODIS-NDVI composite satellite data with 250 m resolution for the period 2000 to 2006 were used to map the growing season. A new combined pixel-specific NDVI threshold and decision rule-based mapping method was developed to determine the onset and end of the growing season. A moderately high correlation was found between NDVI data and birch phenology data. The earliest onset of the growing season is found in the narrow strip of lowland between the mountains and the sea along the coast of northern Norway. The onset follows a clear gradient from lowland to mountain corresponding to the decreasing temperature gradient. In autumn, the yellowing of the vegetation shows a more heterogeneous pattern. The length of the growing season is between 100 and 130 days in 55% of the study area. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：253 / 266

页数：14

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