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Rock Outcrops Redistribute Organic Carbon and Nutrients to Nearby Soil Patches in Three Karst Ecosystems in SW China
Dianjie Wang; Youxin Shen; Yuhui Li; Jin Huang
2017
Source PublicationPLoS ONE
Volume11Issue:8Pages:e0160773
AbstractEmergent rock outcrops are common in terrestrial ecosystems. However, little research has been conducted regarding their surface function in redistributing organic carbon and nutrient fluxes to soils nearby. Water that fell on and ran off 10 individual rock outcrops was collected in three 100 × 100 m plots within a rock desertification ecosystem, an anthropogenic forest ecosystem, and a secondary forest ecosystem between June 2013 and June 2014 in Shilin, SW China. The concentrations of total organic carbon (TOC), total nitrogen (N), total phosphorus (P), and potassium (K) in the water samples were determined during three seasons, and the total amounts received by and flowing out from the outcrops were calculated. In all three ecosystems, TOC and N, P, and K were found throughout the year in both the water received by and delivered to nearby soil patches. Their concentrations and amounts were generally greater in forested ecosystems than in the rock desertification ecosystem. When rock outcrops constituted a high percentage (≥ 30%) of the ground surface, the annual export of rock outcrop runoff contributed a large amount of organic carbon and N, P, and K nutrients to soil patches nearby by comparison to the amount soil patches received via atmospheric deposition. These contributions may increase the spatial heterogeneity of soil fertility within patches, as rock outcrops of different sizes, morphologies, and emergence ratios may surround each soil patch.
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10405
Collection恢复生态学组
Corresponding AuthorYouxin Shen
Recommended Citation
GB/T 7714
Dianjie Wang,Youxin Shen,Yuhui Li,et al. Rock Outcrops Redistribute Organic Carbon and Nutrients to Nearby Soil Patches in Three Karst Ecosystems in SW China[J]. PLoS ONE,2017,11(8):e0160773.
APA Dianjie Wang,Youxin Shen,Yuhui Li,&Jin Huang.(2017).Rock Outcrops Redistribute Organic Carbon and Nutrients to Nearby Soil Patches in Three Karst Ecosystems in SW China.PLoS ONE,11(8),e0160773.
MLA Dianjie Wang,et al."Rock Outcrops Redistribute Organic Carbon and Nutrients to Nearby Soil Patches in Three Karst Ecosystems in SW China".PLoS ONE 11.8(2017):e0160773.
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