Aller au contenu principal

page search

Bibliothèque Temporal progress in improving carbon and nitrogen storage by grazing exclosure practice in a degraded land area of China's Horqin Sandy Grassland

Temporal progress in improving carbon and nitrogen storage by grazing exclosure practice in a degraded land area of China's Horqin Sandy Grassland

Temporal progress in improving carbon and nitrogen storage by grazing exclosure practice in a degraded land area of China's Horqin Sandy Grassland

Resource information

Date of publication
Décembre 2012
Resource Language
ISBN / Resource ID
AGRIS:US201400173221
Pages
55-61

Overgrazing is a primary agent to cause and aggravate desertification in the Horqin Sandy Grassland of northern China that has reduced the capacity of carbon (C) and nitrogen (N) storage in the region. Grazing exclosure practice is recommended to control the desertification by vegetation restoration. How the restoration improves the C and N storage needs to be answered to the policy makers for their future land use planning and decisions. This storage in a plant–soil system down to 100cm inside grazing exclosure after practice terms of 7, 12, and 25 years was measured as compared to active sand dunes referred as exclosure practice term of 0. Organic C storage in the system increased by 341, 822, and 1786gm⁻², respectively, after 7, 12, and 25 years of grazing exclosure, whereas the corresponding N storage increased by 30, 65, and 139gm⁻². Soil is the major reservoir in the system to store C and N. Temporally along the exclosure terms of 0, 7, 12, and 25 years, the soil C storage comprised 97, 88, 77, and 84% of total plant–soil system C storage, respectively, whereas the corresponding soil total N storage comprised 99, 97, 94, and 94% of total plant–soil system N storage. Our results provide land use policy makers with rationale how to manage the grazing practice to restore the vegetation for C and N sequestration.

Share on RLBI navigator
NO

Authors and Publishers

Author(s), editor(s), contributor(s)

Li, Yuqiang
Zhou, Xinhua
Brandle, James R.
Zhang, Tonghui
Chen, Yinping
Han, Juanjuan

Publisher(s)
Data Provider
Geographical focus