Effects of Caragana microphylla plantations on organic carbon sequestration in total and labile soil organic carbon fractions in the Horqin Sandy Land, northern China
| العنوان: | Effects of Caragana microphylla plantations on organic carbon sequestration in total and labile soil organic carbon fractions in the Horqin Sandy Land, northern China |
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| المؤلفون: | Jing Feng, Na Su, Quanlin Ma, Xueyong Zhao, Tonghui Zhang, Yuqiang Li, Wen Shang, Jinnian Tang |
| المصدر: | Journal of Arid Land. 9:688-700 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Total organic carbon, 010504 meteorology & atmospheric sciences, Agroforestry, 04 agricultural and veterinary sciences, Soil carbon, Management, Monitoring, Policy and Law, 01 natural sciences, Biomass carbon, Sand dune stabilization, Plant ecology, Agronomy, Caragana microphylla, Soil water, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Afforestation, Environmental science, 0105 earth and related environmental sciences, Earth-Surface Processes, Water Science and Technology |
| الوصف: | Afforestation is conducive to soil carbon (C) sequestration in semi-arid regions. However, little is known about the effects of afforestation on sequestrations of total and labile soil organic carbon (SOC) fractions in semi-arid sandy lands. In the present study, we examined the effects of Caragana microphylla Lam. plantations with different ages (12- and 25-year-old) on sequestrations of total SOC as well as labile SOC fractions such as light fraction organic carbon (LFOC) and microbial biomass carbon (MBC). The analyzed samples were taken from soil depths of 0–5 and 5–15 cm under two shrub-related scenarios: under shrubs and between shrubs with moving sand dunes as control sites in the Horqin Sandy Land of northern China. The results showed that the concentrations and storages of total SOC at soil depths of 0–5 and 5–15 cm were higher in 12- and 25-year-old C. microphylla plantations than in moving sand dunes (i.e., control sites), with the highest value observed under shrubs in 25-year-old C. microphylla plantations. Furthermore, the concentrations and storages of LFOC and MBC showed similar patterns with those of total SOC at the same soil depth. The 12-year-old C. microphylla plantations had higher percentages of LFOC concentration to SOC concentration and MBC concentration to SOC concentration than the 25-year-old C. microphylla plantations and moving sand dunes at both soil depths. A significant positive correlation existed among SOC, LFOC, and MBC, implying that restoring the total and labile SOC fractions is possible by afforestation with C. microphylla shrubs in the Horqin Sandy Land. At soil depth of 0–15 cm, the accumulation rate of total SOC under shrubs was higher in young C. microphylla plantations (18.53 g C/(m2•a); 0–12 years) than in old C. microphylla plantations (16.24 g C/(m2•a); 12–25 years), and the accumulation rates of LFOC and MBC under shrubs and between shrubs were also higher in young C. microphylla plantations than in old C. microphylla plantations. It can be concluded that the establishment of C. microphylla in the Horqin Sandy Land may be a good mitigation strategy for SOC sequestration in the surface soils. |
| تدمد: | 2194-7783 1674-6767 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::25e89a8526726d1d5052a0d716fd9e8fTest https://doi.org/10.1007/s40333-017-0063-xTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........25e89a8526726d1d5052a0d716fd9e8f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 21947783 16746767 |
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