Dissolved Organic Carbon in Association with Water Soluble Nutrients and Metals in Soils from Lake Okeechobee Watershed, South Florida | |
Y. G. Yang; Z. L. He; Y. B. Wang; Y. L. Liu; Z. B. Liang; J. H. Fan; P. J. Stoffella | |
2012 | |
发表期刊 | Water, Air, & Soil Pollution |
卷号 | 223期号:7页码:4075-4088 |
摘要 | Water quality of Lake Okeechobee has been a major environmental concern for many years. Transport of dissolved organic matter (DOM) in runoff water from watershed is critical to the increased inputs of nutrients (N and P) and metals (Cu and Zn). In this study, 124 soil samples were collected with varying soil types, land uses, and soil depths in Lake Okeechobee watershed and analyzed for water-extractable C, N, P, and metals to examine the relationship between dissolved organic carbon (DOC) and water soluble nutrients (N and P) and metals in the soils. DOC in the soils was in 27.64–400 mg kg−1 (69.30 mg kg−1 in average) and varied with soil types, land uses, and soil depth. The highest water-extractable DOC was found in soils collected in sugar cane and field crops (277 and 244 mg kg−1 in average, respectively). Water soluble concentrations of N and P were in the range of 6.46–129 and 0.02–60.79 mg kg−1, respectively. The ratios of water-extractable C/N and C/P in soils were in 0.68–12.52 (3.23 in average) and 3.19–2,329 (216 in average), and varied with land uses. The lowest water-extractable C/N was observed in the soils from dairy (1.66), resident (1.79), and coniferous forest (4.49), whereas the lowest water-extractable C/P was with the land uses of dairy (13.1) and citrus (33.7). Therefore, N and P in the soils under these land uses may have high availability and leaching potential. The concentrations of water soluble Co, Cr, Cu, Ni, and Zn were in the ranges of < method detection limit (MDL)–0.33, |
学科领域 | 环境地球化学 |
收录类别 | SCI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.gyig.ac.cn/handle/352002/4799 |
专题 | 环境地球化学国家重点实验室_环境地球化学国家重点实验室_期刊论文 |
推荐引用方式 GB/T 7714 | Y. G. Yang,Z. L. He,Y. B. Wang,et al. Dissolved Organic Carbon in Association with Water Soluble Nutrients and Metals in Soils from Lake Okeechobee Watershed, South Florida[J]. Water, Air, & Soil Pollution,2012,223(7):4075-4088. |
APA | Y. G. Yang.,Z. L. He.,Y. B. Wang.,Y. L. Liu.,Z. B. Liang.,...&P. J. Stoffella.(2012).Dissolved Organic Carbon in Association with Water Soluble Nutrients and Metals in Soils from Lake Okeechobee Watershed, South Florida.Water, Air, & Soil Pollution,223(7),4075-4088. |
MLA | Y. G. Yang,et al."Dissolved Organic Carbon in Association with Water Soluble Nutrients and Metals in Soils from Lake Okeechobee Watershed, South Florida".Water, Air, & Soil Pollution 223.7(2012):4075-4088. |
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