Sown alfalfa pasture decreases grazing intensity while increasing soil carbon: Experimental observations and DNDC model predictions

Frontiers in Plant Science, Год журнала: 2022, Номер 13

Опубликована: Ноя. 21, 2022

Grasslands are the most important land use in China and have experienced extensive degradation past few decades due to overgrazing. However, regionally viable solutions grazing intensity alleviation remained elusive date. Here, we evaluated effects of sown alfalfa pastures northern using an experiment-modeling combined approach that involved six sites field experiments five provinces DNDC modeling pasture's forage production carbon sequestration potentials marginal lands. Our results showed dry-matter yield varied between 4.5 9.0 Mg ha-1 under rainfed irrigated conditions, respectively, from 2025 2035. If half available lands were mobilized for production, these levels meant livestock on natural grasslands may drop 8-13% 20-33% conditions. also land's soil organic contents systematically higher pasture than fallow management by a big margin 8.5 9.9 g kg-1 (i.e., +79 +95%), during 2025-2035. Overall, demonstrated represents effective grassland conservation pathway over short- medium-term time horizon based current technologies.

Язык: Английский

The AMG model coupled with Rock-Eval® analysis accurately predicts cropland soil organic carbon dynamics in the Tuojiang River Basin, Southwest China

Journal of Environmental Management, Год журнала: 2023, Номер 345, С. 118850 - 118850

Опубликована: Авг. 21, 2023

Язык: Английский