National Administration of Surveying, Mapping and Geoinformation of China

Long-term mapping of aboveground carbon storage in China (2000−2020) using a prior-knowledge-constrained deep learning model

Terrestrial ecosystems play a critical role in mitigating climate change by sequestering atmospheric carbon dioxide (CO₂), with aboveground carbon storage (AGC) serving as a key indicator of ecosystem carbon sink capacity. However, existing AGC estimation approaches remain constr...

KG-MS-ResNet: A Knowledge-Guided Multi-Scale Attention Residual Network for Cultivated Land Change Monitoring

Abstract. Cultivated land conversion to built-up area is the core form of farmland non-agriculturalization and the main threat to farmland protection. China has strict requirements for safeguarding farmland security and holding the 1.8-billion-mu farmland red line. However, curre...

Analysis of the Current Situation and Research on Countermeasures of NationalFundamental Surveying and Mapping Achievements Services

Abstract. Based on the current situation of the application and service of national fundamental surveying and mapping achievements from 2020 to 2024, this paper adopts a combined method of quantitative and qualitative analysis to identify the existing problems and challenges, inc...