Arid
DOI10.7717/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 AuthorMa, 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.
JournalPEERJ
ISSN2167-8359
Year Published2022
Volume10
Abstract in EnglishBackground: 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 EnglishCaragana shrubs Desert steppe grassland Soil aggregate stability Aggregate-associated organic carbon
SubtypeArticle
Language英语
OA Typegold, Green Published
Indexed BySCI-E
WOS IDWOS:000756689100007
WOS KeywordLAND-USE CHANGE ; LOESS PLATEAU ; MATTER ; WATER ; SEQUESTRATION ; GRASSLAND ; NITROGEN ; STOCKS ; COMMUNITIES ; FRACTIONS
WOS SubjectMultidisciplinary Sciences
WOS Research AreaScience & Technology - Other Topics
Document Type期刊论文
Identifierhttp://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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