Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.7717/peerj.12507 |
| Caragana korshinskii Kom. plantation reduced soil aggregate stability and aggregate-associated organic carbon on desert steppe | |
Lu, Qi ; Ma, Hongbin; Zhou, Yao; Calvelo-Pereira, Roberto; Shen, Yan
| |
| Corresponding Author | Ma, HB (corresponding author)，Ningxia Univ, Sch Agr, Yinchuan, Ningxia, Peoples R China. ; Ma, HB (corresponding author)，Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol, Yinchuan, Ningxia, Peoples R China. |
| Journal | PEERJ
 |
| ISSN | 2167-8359 |
| Year Published | 2022 |
| Volume | 10 |
| Abstract in English | Background: After implementing of the Grain-for-Green project, Caragana korshinskii Kom. has been widely planted in China's arid regions. Although natural restoration grassland and artificial Caragana plantations measures have long been focuses in carbon research, the combined influence of natural restoration grassland and artificial Caragana plantation measures on aggregate stability and the aggregate-associated organic carbon (OC) remains unclear. Method: We selected natural grassland (NG) and three different densities of Caragana plantations (high planting density, HG; middle planting density, MD; low planting density, LD) on desert steppe. The soil aggregate distribution and stability index such as fractal dimension (D), mean weight diameter (MWD), geometric mean diameter (GMD), percentage of aggregation destruction (PAD), as well as aggregate-associated OC concentration and stock were measured. Results: Results shows that the soil aggregates were primarily macroaggregates (>2 mm) and mesoaggregates (0.25-2 mm) under dry sieving while microaggregates (<0.25 mm) were preponderant under wet sieving (more than 57%). Overall, compared with Caragana plantations, the MWD (4.43 and 4.51 mm) and GMD (1.72 and 1.83 mm) were both highest in two soil layers under the NG and the D (2.77 and 2.71) was lowest. Compared with the NG, the aggregate-associated OC stocks in the 0-40 cm depths in the LD, MD, and HD decreased by 41.54%, 46.93%, and 42.03%, respectively. SOC stock was mainly concentrated in the soil aggregate with sizes of >2 mm and <0.25 mm. These results suggested that natural grassland restoration measures could improve the soil aggregate stability and aggregate-associated OC concentration better than Caragana plantation restoration measures, which NG may be optimal for increasing carbon sequestration and stabilizing soil aggregates on desert steppe. |
| Keyword in English | Caragana shrubs Desert steppe grassland Soil aggregate stability Aggregate-associated organic carbon |
| Subtype | Article |
| Language | 英语 |
| OA Type | gold, Green Published |
| Indexed By | SCI-E |
| WOS ID | WOS:000756689100007 |
| WOS Keyword | LAND-USE CHANGE ; LOESS PLATEAU ; MATTER ; WATER ; SEQUESTRATION ; GRASSLAND ; NITROGEN ; STOCKS ; COMMUNITIES ; FRACTIONS |
| WOS Subject | Multidisciplinary Sciences |
| WOS Research Area | Science & Technology - Other Topics |
| Document Type | 期刊论文 |
| Identifier | http://119.78.100.177/qdio/handle/2XILL650/376291 |
| Affiliation | [Lu, Qi; Ma, Hongbin; Zhou, Yao; Shen, Yan] Ningxia Univ, Sch Agr, Yinchuan, Ningxia, Peoples R China; [Ma, Hongbin; Shen, Yan] Ningxia Univ, Breeding Base State Key Lab Land Degradat & Ecol, Yinchuan, Ningxia, Peoples R China; [Calvelo-Pereira, Roberto] Massey Univ, Sch Agr & Environm, Palmerston North, New Zealand |
| Recommended Citation GB/T 7714 | Lu, Qi,Ma, Hongbin,Zhou, Yao,et al. Caragana korshinskii Kom. plantation reduced soil aggregate stability and aggregate-associated organic carbon on desert steppe[J],2022,10. |
| APA | Lu, Qi,Ma, Hongbin,Zhou, Yao,Calvelo-Pereira, Roberto,&Shen, Yan.(2022).Caragana korshinskii Kom. plantation reduced soil aggregate stability and aggregate-associated organic carbon on desert steppe.PEERJ,10. |
| MLA | Lu, Qi,et al."Caragana korshinskii Kom. plantation reduced soil aggregate stability and aggregate-associated organic carbon on desert steppe".PEERJ 10(2022). |
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