Dataset for: The CAGB Double-Gate — Requiring Carbon Self-Neutralization and Yield Conservation as Ex-Ante Conditions for Agricultural Soil Carbon Credit Integrity

This dataset contains the two-year (2023–2024) measured and estimated data from a 2-ha paddy rice project in Jilin Province, Northeast China, used to retrospectively test the CAGB Double-Gate mechanism. The CAGB Double-Gate proposes two ex-ante conditions—Carbon Self-Neutralization (CAGB ≥ EGHG) and Yield Conservation (Y_t ≥ Y_0)—as admission requirements preceding ΔSOC credit quantification. The dataset includes: site information, yield records, greenhouse gas emission components (three scopes), carbon self-neutralization verification, and credit quantification results.