| 主流主题类别 | 文档频次 /次 | 细分主题关键词 |
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土地利用 /土地覆盖 | 2 713 | land use, land cover, land use change, land cover change, land cover map, land cover classification, land use classification, urban land cover/land use, land use planning | | 森林 | 2 090 | forest inventory, forest structure, forest disturbance, forest management, forest degradation, forest fires, forest monitoring, forest biomass, forest cover, forest height, forest health, forest debris, forest carbon, forest mapping, forest cover change, forest dynamics, Forest change, forest canopy, forest classification, forest transition, forest loss, forest restoration, forest ecosystem, forest above-ground biomass, forest protection, forest decline, forest ecology | | 土壤 | 2 077 | soil moisture, soil erosion, soil salinity, soil properties, soil moisture, soil temperature, soil texture, soil water content, soil moisture retrieval, soil organic matter, soil carbon, soil mapping, soil moisture balance, soil salinization, soil contamination, soil fertility, soil spectroscopy, soil roughness, soil respiration, soil degradation, soil evaporation, soil survey, soil seal, soil reflectance, soil heat flux, soil erodibility, soil pollution, soil erosion risk, soil science, soil quality, soil nutrients, soil map, soil erosion risk, soil classification, soil water storage, soil monitoring, soil water deficit, total soil nitrogen, soil moisture mapping, soil hydraulic properties, soil and water conservation, soil-adjusted vegetation index | | 城市 | 2 066 | urbanization, urban heat island, urban areas, urban expansion, urban growth, urban planning, urban sprawl, urban remote sensing, urban environment, urban forest, urban ecology, urban climate, urban vegetation, urban morphology, urban development, urban form, urban mapping, urban green space, urban trees, urban landscape, urban agglomeration, urban monitoring, urban sustainability, urban classification, urban agriculture, urban structure, urban pollution, urban impervious surface, urban-rural gradient, urban modeling, urban ecosystems, urban functional zone, urban geography, urban canopy | | 水和流域 | 1 782 | water quality, water balance, water stress, water vapor, water resources, water level, watershed, water management, water clarity, watermarking, water resources management, water efficiency, water index, water quality monitoring, water area management, water pollution, water depth, water-leaving radiance, water content, water budget, water productivity, water shortage, water cycle, water cloud model, water body, water color, water storage, water consumption, groundwater level, water surface temperature, water state, water potential, water monitoring, water footprint, water composition, water index, water harvesting water erosion, water column correction, watershed prioritization, watershed delineation | | 气候 | 1 741 | climate change, climate variability, climatology, climate data record, climate models, climate warming, climatic factors, climate sensitivity, climate change adaptation, climate factors, climate change mitigation, climate monitoring, climate extremes, climate change initiative, climate records, climate modelling, climate impacts, climate forcing, climate indices, climate feedback, climate change impact | | 地表 | 1 457 | land surface albedo, land surface emissivity, land surface model, land surface modeling, land surface phenology, land surface temperature, land surface water index | | 生物 | 1 384 | biomass, biodiversity, biomass burning, biomass estimation, biophysical parameters, biogeography, bioenergy, biosensor, biodiversity conservation, biosensors, biogeochemistry, biodiversity monitoring, biometrics, bio-optical model, biomedical monitoring, biotelemetry, biological invasion, biophysical parameter retrieval, Biological soil crust, biomass change | | 分类 | 1 840 | classifiers, classifier fusion, classification accuracy, classifier ensemble, classification uncertainty, classification tree, supervised classification, SVM classification, overall classifier, context classification, fuzzy classification, hierarchical classification, multi-class Classification, multi-signal classification, object-oriented classification, comparison after classification, rule-based classification, wishart classifier | | 碳 | 1 245 | carbon balance, carbon budget, carbon cycling, carbon dynamics, carbon density, carbon emission, carbon fluxes, carbon loss, carbon mapping, carbon modeling, carbon monitoring, carbon nanotubes, carbon sink, carbon stocks, carbon storage, carbon use efficiency, carbonate rocks | | 植被 | 2 002 | vegetation abundance, vegetation change, vegetation change tracker, vegetation characteristics, vegetation aggregation index, vegetation community, vegetation coverage, vegetation density, vegetation coverage, vegetation dynamics, vegetation pattern, vegetation phenology, vegetation photosynthesis model, vegetation structure, vegetation restoration, vegetation monitoring, vegetation classification, vegetation height, vegetation fraction, vegetation water content, vegetation type, vegetation productivity, vegetation biomass, vegetation degradation | | 变化监测 | 1 021 | change detection, change detection analysis, change detection algorithms |
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