Abstract: The space-air-ground-sea integrated monitoring network is the core infrastructure of China,s modern ecological and environmental monitoring system. Its massive, multi-source, real-time, and heterogeneous data pose severe challenges to fullprocess data management and the release of data element value. To address key issues such as the limited integration of multisource heterogeneous data, insufficient full-lifecycle quality control, unclear data asset inventories, underdeveloped secure circulation mechanisms,and fragmented value-transformation pathways,this paper systematically investigates implementation paths for monitoring data management and technologies for releasing the value of digital elements. Regarding management paths,this study constructs a standardized governance system that combines differentiated metadata control according to data structural characteristics with unified semantic calibration. A two-stage progressive multi-source heterogeneous data fusion and productization technical path, comprising feature-layer fusion and decision-layer fusion, is proposed. A three-tier progressive data asset management system is designed,covering resource catalogs,product classification,and security grading. On this basis,this study establishes mechanisms for trusted data ownership confirmation and secure circulation, and develops a logically unified yet physically distributed resource data center architecture, thereby forming a full-chain implementation path that integrates governance,fusion,control,and operation. Regarding value release,based on the ternary driving theory of institution,technology,and market,a three-level value release framework is proposed,covering the transformation of monitoring data into data elements,the enhancement of their application value,and the maximization of their market-oriented value. Combined with AI large models,deep mining and intelligent analysis of long-time-series,multi-modal,and cross-scale monitoring data are achieved. Furthermore,trusted data space is used as key infrastructure to support the secure circulation and scenario-based reuse of data products,thereby opening a full-chain value transformation channel from raw data to data resources,data products,and ultimately the data market.This system can effectively break down data silos,improve data quality,and amplify element value,providing theoretical support and technical reference for the digital-intelligent transformation of the space-air-ground-sea integrated monitoring network,precise ecological and environmental governance,and the marketization of data elements.