Remote Sensing Identification and Rapid Yield Estimation of Pitaya Plants in Different Karst Mountainous Complex Habitats

Agriculture, Journal Year: 2023, Volume and Issue: 13(9), P. 1742 - 1742

Published: Sept. 1, 2023

The Pitaya industry is a specialty fruit in the mountainous region of Guizhou, China. planted area Guizhou reaches 7200 ha, ranking first country. At present, planting lacks efficient yield estimation methods, which has negative impact on downstream chain, stymying constant growing market. fragmented and complex terrain karst areas capricious local weather have hindered accurate crop identification using traditional satellite remote sensing there currently little attempt made to tackle crops’ estimation. In this paper, based UAV (unmanned aerial vehicle) images, complexity sites background been divided into three different scenes as with similar colors, topographic variations, coexistence multiple crops. Close Color Vegetation Index (CCVI) extract plants, accuracy reached 92.37% average sample sites; point clouds data Canopy Height Model (CHM) 89.09%; crops, U-Net Deep Learning (DLM) identify 92.76%. Thereafter, model was constructed measured field for several periods, fast estimations were carried out examined application scenes. results showed that colors 91.25%, variations 93.40%, crops 95.18%. overall show high accuracy. experimental it feasible use images rapidly estimate characteristic habitat, can also provide scientific reference rapid other regions.

Language: Английский

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Vegetation succession increases soil organic carbon density and decreases soil erodibility: Evidence from a karst trough valley experiencing farmland abandonment

CATENA, Journal Year: 2024, Volume and Issue: 246, P. 108359 - 108359

Published: Sept. 10, 2024

Language: Английский

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River Ecological Protection and Restoration Using Multi-source Remote Sensing Data

Mobile Networks and Applications, Journal Year: 2023, Volume and Issue: 28(6), P. 2118 - 2129

Published: July 14, 2023

Language: Английский

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Divergent Geochemical Pathways of Carbonate Aquifer Evolution in a Classic Karst Terrain: (1) Polygenetic Cave Development Identified Using Longitudinal Groundwater Geochemistry

Water, Journal Year: 2023, Volume and Issue: 15(19), P. 3410 - 3410

Published: Sept. 28, 2023

Carbonic acid and sulfuric speleogenesis describe a dichotomy between epigenetic hypogenetic caves carbon sulfur cycling in karst, but do not acknowledge the global spectrum of cave formation. This paper, part one two-part investigation, tests revises speleogenetic models from classic karst landscape using dissolved ion concentrations δ13CDIC, δ34S water samples collected at four sites across Bluespring Lost River basins Mitchell Plateau, Indiana, USA. Analyses revealed elevated both differently sourced; H2S (δ34S = −14.2‰) evolved petroleum seeps Caverns accounted for up to 61% stream, while evaporite beds [+14.50‰, +17.91‰]) St. Louis Limestone contributed 100% Orangeville Rise, terminal spring basin. These results have implications carbon–sulfur cycle linkages, particularly potential acceleration flux dissolution otherwise settings. We suggest new paradigm North American midcontinent—speleogenesis Plateau similar settings is or hypogenetic, instead polygenetic with competing chemical processes varying space time.

Language: Английский

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Divergent Geochemical Pathways of Carbonate Aquifer Evolution in a Classic Karst Terrain: (2) Groundwater Source Delineation Using Regional Water Chemistry Data

Water, Journal Year: 2023, Volume and Issue: 15(19), P. 3436 - 3436

Published: Sept. 29, 2023

Springs provide ideal monitoring points for groundwater chemistry, which are important managing resources. The chemistry of these spring waters aggregate geochemical reactions along the flow path. In this paper, part two a two-part investigation, 104 perennial springs in classic karst landscape Mitchell Plateau, Indiana, USA were sampled at base flow. Many historically domestic, agricultural, commercial, and recreational use. Multifactor analysis field measurements, principal ions, stable isotopes revealed five primary clusters emerging from Aquifer. Two represented earth-alkaline-type that discriminated by temperature inorganic carbon concentration. other comprised mineralized alkaline-earth-type with excess alkalis elevated sulfate. fifth cluster appeared to be included meteoric sources. Using longitudinal data over years one mixing lines used describe set. pointed sources sulfur deep brines evaporite dissolution. Collectively, regional allow better delineation water types differentiation between Upper Lower

Language: Английский

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