Identification of Ecological Restoration Approaches and Effects Based on the OO-CCDC Algorithm in an Ecologically Fragile Region DOI Creative Commons
Caiyong Wei,

Xiaojing Xue,

Lingwen Tian

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(16), P. 4023 - 4023

Published: Aug. 14, 2023

A full understanding of the patterns, trends, and strategies for long-term ecosystem changes helps decision-makers evaluate effectiveness ecological restoration projects. This study identified approaches on planted forest, natural grassland protection during 2000–2022 based a developed object-oriented continuous change detection classification (OO-CCDC) method. Taking Loess hilly region in southern Ningxia Hui Autonomous Region, China as case study, we assessed effects after protecting forest or automatically continuously by highlighting location time positive negative effects. The results showed that accuracy extraction was 90.73%, accuracies were 86.1% 84.4% space. detailed evaluation from 2000 to 2022 demonstrated peaked 2013 (1262.69 km2), while highest observed 2017 (54.54 km2). In total, 94.39% forests, 99.56% protection, 62.36% stable pattern, 35.37% displayed effects, indicating proactive role management an ecologically fragile region. accounted small proportion, only 2.41% forests concentrated Pengyang County 2.62% mainly distributed around farmland central-eastern part area. By regions with acceptable references essential conservation objects, this provides valuable insights evaluating integrated pattern determining configuration measures.

Language: Английский

Using imaging spectroscopy to assess the impacts of invasive plants on aboveground and belowground characteristics DOI Creative Commons
M. Ny Aina Rakotoarivony, Hamed Gholizadeh, Kianoosh Hassani

et al.

GIScience & Remote Sensing, Journal Year: 2024, Volume and Issue: 61(1)

Published: Sept. 7, 2024

Language: Английский

Citations

2
Evaluation of the Monitoring Capability of 20 Vegetation Indices and 5 Mainstream Satellite Band Settings for Drought in Spring Wheat Using a Simulation Method DOI Creative Commons
Changlin Xiao,

Yinan Wu,

Xiufang Zhu

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(19), P. 4838 - 4838

Published: Oct. 6, 2023

This study simulated the canopy reflectance of spring wheat at five distinct growth stages (jointing, booting, heading, flowering, and pustulation) under four drought scenarios (no drought, mild moderate severe drought) using PROSAIL radiative transfer model, it identified wavelength range most sensitive to drought. Additionally, efficacy 5 mainstream satellites (Sentinel-2, Landsat 8, Worldview-2, MODIS, GF-2) 20 commonly utilized remote sensing vegetation indicators (NDVI, SAVI, EVI, ARVI, GVMI, LSWI, VSDI, NDGI, SWIRR, NDWI, PRI, NDII, MSI, WI, SRWI, DSWI, NDREI1, NDREI2, ZMI, MTCI) in monitoring was evaluated. The results indicated that spectral response characteristics vary significantly across stages. Notably, ranges 1405–1505 nm 2140–2190 were as optimal for throughout period. Considering only bands, MODIS band 7 determined be suitable satellite different Among indices examined, followed by LSWI GVMI calculated bands 2 6 well 8 11 Sentinel-2, demonstrated superior capabilities differentiating scenarios. These conclusions have important implications because they provide valuable guidance selecting data indices, present insights future research on design new assisting configuration sensors.

Language: Английский

Citations

6
Marine plastic detection using PRISMA hyperspectral satellite imagery in a controlled environment DOI
Laura Corbari, Fulvio Capodici, Giuseppe Ciraolo

et al.

International Journal of Remote Sensing, Journal Year: 2023, Volume and Issue: 44(21), P. 6845 - 6859

Published: Nov. 2, 2023

The amount of plastics on seawater is causing ecosystem damage to both land areas and water bodies. It proven that once plastic particles reach the sea, they will be degraded. As their detection not easy with in situ sampling, remote sensing techniques could help detect evaluate impact ecosystems. To understand main limitations detecting floating material through images, an a pilot experiment was carried out artificial target deployed at Aegean Sea (Greece) within Plastic Litter Project 2021. Hyperspectral PRISMA, multispectral PlanetScope visible Unmanned Aerial Systems (UAS) acquisitions were analysed. A nonlinear unmixing technique applied derive spectral signature target; finally, linear approach allowed for determining percentage occupation pixel level. Different band combinations PRISMA data selected which provided best result detection; one these retrieved via principal component analysis. Only slight differences achieved using different band-sets. expected, since had diameter comparable spatial resolution (~30 m), its challenging task caused by influence (mixed pixels). realized benefitting from high available bands, as confirmed comparative test image used original (3 m) after degrading it Results demonstrated optimal possible few only taking advantage (compared dimension). Indeed, unreliable fractions derived limited number bands.

Language: Английский

Citations

6
Vegetation Stress Monitor—Assessment of Drought and Temperature-Related Effects on Vegetation in Germany Analyzing MODIS Time Series over 23 Years DOI Creative Commons
Ursula Geßner, Sophie Reinermann, Sarah Asam

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(22), P. 5428 - 5428

Published: Nov. 20, 2023

Over the past two decades, and particularly since 2018, Central Europe has experienced several droughts with strong impacts on ecosystems food production. It is expected that under accelerating climate change, resulting vegetation ecosystem stress will further increase. Against this background, there a need for techniques datasets allow monitoring of timing, extent effects droughts. Vegetation indices (VIs) based satellite Earth observation (EO) can be used to directly assess over large areas. Here, we use MODIS Enhanced Index (EVI) time series analyze characterize Germany’s croplands grasslands occurred 2000. A special focus put years from 2018 2022, an extraordinary 5-year period characterized by high frequency heat waves. The study reveals variations in agricultural drought patterns during major Germany (such as 2003 or 2018), well regional differences climate-related stress. northern parts showed higher tendency affected effects, after 2018. Further, correlation analyses relationship between annual yields maize, potatoes winter wheat previous stress, where timing strongest relationships could related crop-specific development stages. Our results support potential VI robustly predicting yields.

Language: Английский

Citations

5
Identification of Ecological Restoration Approaches and Effects Based on the OO-CCDC Algorithm in an Ecologically Fragile Region DOI Creative Commons
Caiyong Wei,

Xiaojing Xue,

Lingwen Tian

et al.

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(16), P. 4023 - 4023

Published: Aug. 14, 2023

A full understanding of the patterns, trends, and strategies for long-term ecosystem changes helps decision-makers evaluate effectiveness ecological restoration projects. This study identified approaches on planted forest, natural grassland protection during 2000–2022 based a developed object-oriented continuous change detection classification (OO-CCDC) method. Taking Loess hilly region in southern Ningxia Hui Autonomous Region, China as case study, we assessed effects after protecting forest or automatically continuously by highlighting location time positive negative effects. The results showed that accuracy extraction was 90.73%, accuracies were 86.1% 84.4% space. detailed evaluation from 2000 to 2022 demonstrated peaked 2013 (1262.69 km2), while highest observed 2017 (54.54 km2). In total, 94.39% forests, 99.56% protection, 62.36% stable pattern, 35.37% displayed effects, indicating proactive role management an ecologically fragile region. accounted small proportion, only 2.41% forests concentrated Pengyang County 2.62% mainly distributed around farmland central-eastern part area. By regions with acceptable references essential conservation objects, this provides valuable insights evaluating integrated pattern determining configuration measures.

Language: Английский

Citations

4