Chinese Academy of Surveying and Mapping

Patch–Terrain Coupling and Resistance-Based Connectivity Adjustment for Assessing Contiguous Cropland Consolidation Potential in Hilly Terraced Regions: A Case Study of Huangzhong District, China

Cropland fragmentation remains a major constraint on agricultural mechanization, land consolidation, and cropland protection in hilly and mountainous regions. In terraced landscapes, cropland patches that appear close in planar space may nevertheless be difficult to connect becau...

Exploring the Impact Path of Cultivated Land Use and Its Environmental Factors on Soil Nutrients in Southeastern Tibet

The rapid expansion of agricultural activities on the Tibetan Plateau has raised concerns about soil degradation and nutrient dynamics in this ecologically fragile alpine region. However, existing studies lack a systematic quantification of the vertical influence depth of farmlan...

Fine-Grained Tree Species Classification in Urban Forests via Phenology–Structure Synergistic Fusion of Multi-Source Remote Sensing Data

Urban forest tree species composition and spatial distribution are essential for refined greenspace management, ecosystem-service assessment, and forest-health monitoring. High-resolution imagery captures crown texture and spatial boundaries, multi-temporal NDVI reflects phenolog...

MARC-Net: A Modality-Availability-Aware Robust Change Network for Missing-Optical Bi-Temporal Optical–SAR Change Detection of Reclaimed Cropland

Reliable monitoring of reclaimed cropland is hindered when one optical acquisition is unavailable or degraded. We formulate missing-modality bi-temporal optical–SAR change detection and propose the Modality-Availability-Aware Robust Change Network (MARC-Net), a new architecture t...

Early-mid Holocene Ross Sea extreme wave heights reflect sea ice retreat and ocean-atmosphere interactions

Abstract Antarctic coastal systems preserve valuable records of postglacial environmental change and extreme storm events. On Inexpressible Island, Ross Sea, we integrated geomorphic mapping, boulder measurements, exposure dating, radiocarbon constraints, and hydrodynamic analysi...