Back to Search
Start Over
Woody Above-Ground Biomass Estimation on Abandoned Agriculture Land Using Sentinel-1 and Sentinel-2 Data
- Source :
- Remote Sensing, Vol 13, Iss 2488, p 2488 (2021), Remote Sensing, Volume 13, Issue 13, Pages: 2488
- Publication Year :
- 2021
- Publisher :
- MDPI AG, 2021.
-
Abstract
- Abandoned agricultural land (AAL) is a European problem and phenomenon when agricultural land is gradually overgrown with shrubs and forest. This wood biomass has not yet been systematically inventoried. The aim of this study was to experimentally prove and validate the concept of the satellite-based estimation of woody above-ground biomass (AGB) on AAL in the Western Carpathian region. The analysis is based on Sentinel-1 and -2 satellite data, supported by field research and airborne laser scanning. An improved AGB estimate was achieved using radar and optical multi-temporal data and polarimetric coherence by creating integrated predictive models by multiple regression. Abandonment is represented by two basic AAL classes identified according to overgrowth by shrub formations (AAL1) and tree formations (AAL2). First, an allometric model for AAL1 estimation was derived based on empirical material obtained from blackthorn stands. AAL2 biomass was quantified by different procedures related to (1) mature trees, (2) stumps and (3) young trees. Then, three satellite-based predictive mathematical models for AGB were developed. The best model reached R2 = 0.84 and RMSE = 41.2 t·ha−1 (35.1%), parametrized for an AGB range of 4 to 350 t·ha−1. In addition to 3214 hectares of forest land, we identified 992 hectares of shrub–tree formations on AAL with significantly lower wood AGB than on forest land and with simple shrub composition.
- Subjects :
- 010504 meteorology & atmospheric sciences
Science
ved/biology.organism_classification_rank.species
0211 other engineering and technologies
02 engineering and technology
01 natural sciences
Shrub
law.invention
Agricultural land
law
biomass estimation
Radar
Hectare
satellite data
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Estimation
Biomass (ecology)
regression model
ved/biology
business.industry
Forestry
coherence
shrub–tree formations
radar backscatter
Agriculture
integrative management
General Earth and Planetary Sciences
Environmental science
farmland overgrowth
Satellite
business
Subjects
Details
- Language :
- English
- ISSN :
- 20724292
- Volume :
- 13
- Issue :
- 2488
- Database :
- OpenAIRE
- Journal :
- Remote Sensing
- Accession number :
- edsair.doi.dedup.....f7fde5ef2ce99ba5e04d43b69ec99e46