Phosphorus spatial distribution and pollution risk assessment in agricultural soil around the Danjiangkou reservoir, China
文献类型：期刊论文
| 作者 | Li, Zhiguo1,2; Zhang, Runhua3; Liu, Chuang1; Zhang, Runqin1; Chen, Fang1; Liu, Yi1,2 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-01-10 |
| 卷号 | 699页码:9 |
| 关键词 | Soil phosphorus Non-point source pollution Olsen-P Geostatistical analysis Phosphorus index Transport factors |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.134417 |
| 英文摘要 | The phosphorus (P) content in agricultural soils in catchments of lakes or rivers is an important issue because P is both an essential nutrient for high plant yields and a major contributor to eutrophication of water bodies. Thus, we have assessed the spatial distribution of soil P, impacts of environmental factors on its spatial variation, and associated pollution risks, in farmland around the Danjiangkou Reservoir, China. A total of 217 sites were sampled, including 121, 44 and 52 in dry cropland, paddy land and orchards, respectively. Total phosphorus (TP) contents in the sampled soils ranged from 0.230 to 1.893 g kg(-1) and Olsen-P (a measure of available P) from 0.38 to 176 mg kg(-1) . Soil TP and Olsen-P had moderate and high variability, with coefficients of variation of 40% and 115%, respectively. Geostatistical analysis showed that both TP and Olsen-P had positive nugget effects, but TP had stronger spatial autocorrelations than Olsen-P (nugget-to-sill ratios: 22 and 50%, respectively). Total P was significantly influenced by temperature, elevation, aspect, soil pH, organic matter and precipitation, while Olsen-P was controlled by aspect and land use. The TP in soil was very similar in dry cropland and orchards (0.64 +/- 0.19 and 0.61 +/- 0.23 g kg(-1) , respectively), but substantially lower in paddy land (0.15 +/- 0.25 g kg(-1)). Risks for P loss appeared to be very high, high, moderate and low in approximately 10, 40, 15 and 30% of the farmland in the Danjiangkou reservoir area, respectively. (C) 2019 Elsevier B.V. All rights reserved. |
| 资助项目 | National Key Research and Development Program of China[2016YFD0200108] ; National Natural Science Foundation of China[41501313] ; Knowledge Innovative Program of the Chinese Academy of Sciences[Y455434I02] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000500583400113 |
| 出版者 | ELSEVIER |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/14545]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Liu, Yi |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, Core Bot Gardens, Ctr Plant Ecol, Wuhan 430074, Peoples R China 3.Wuhan Acad Agr Sci & Technol, Vegetable Res Inst, Wuhan 430345, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhiguo,Zhang, Runhua,Liu, Chuang,et al. Phosphorus spatial distribution and pollution risk assessment in agricultural soil around the Danjiangkou reservoir, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,699:9. |
| APA | Li, Zhiguo,Zhang, Runhua,Liu, Chuang,Zhang, Runqin,Chen, Fang,&Liu, Yi.(2020).Phosphorus spatial distribution and pollution risk assessment in agricultural soil around the Danjiangkou reservoir, China.SCIENCE OF THE TOTAL ENVIRONMENT,699,9. |
| MLA | Li, Zhiguo,et al."Phosphorus spatial distribution and pollution risk assessment in agricultural soil around the Danjiangkou reservoir, China".SCIENCE OF THE TOTAL ENVIRONMENT 699(2020):9. |
入库方式： OAI收割
来源：武汉植物园
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