Development of soil phosphorus storage capacity for phosphorus retention/release assessment in neutral or alkaline soils | |
Xu, Gang2,3; Yue, Mengyu3; Song, Jiawei1,2; Chen, Xiaobing2; Ren, Yuxuan3 | |
刊名 | PLANT SOIL AND ENVIRONMENT |
2022-02-24 | |
页码 | 9 |
关键词 | macronutrient accumulation environmental risk external phosphorus pollution land uses |
ISSN号 | 1214-1178 |
DOI | 10.17221/482/2021-PSE |
通讯作者 | Xu, Gang(gxu126@foxmail.com) |
英文摘要 | The concept of the soil phosphorus storage capacity (SPSC) was successfully used to evaluate the phosphorus (P) loss risk and the P retention capacity of acidic soil. This study extended the concept of SPSC from acidic soil to neutral or alkaline soil. A total of 95 surfaces (0-10 cm) soil samples were collected from the Yellow River Delta (YRD) for use in this study. Batch sorption experiments, correlation analysis, stepwise regression, and a split-linemodel were used to calculate the threshold value of the degree of P saturation (DPS). The SPSC was developed based on the DPS threshold value. Based on a DPS threshold value of 11.5%, we developed the following equation for calculating the SPSC: SPSC = (11.5% - soil DPS) x (0.113 x SOM (soil organic matter) + 1.343 x CaCO3). In the continuous system in this watershed, from wetland to farmland, the SPSC for vegetable fields (-94.7 +/- 79.1 mg/kg) was lowest and that of the restored wetland (76.3 +/- 26.1 mg/kg) was the highest. Along the transition zone in the YRD, both the natural soil development and human alternations significantly affected the soil P loss/retention capacity. In terms of P storage, the restored wetlands are the highlands for P retention and the vegetable fields contribute significantly to the P loss in the YRD. As a result, we strongly recommend that the restored wetlands be fully utilised for P retention and that P fertiliser no be applied to the fields to prevent P loss into the watershed. |
WOS关键词 | AGRICULTURAL SOILS ; CALCAREOUS SOILS ; COASTAL-PLAIN ; RISK ; LOSSES ; LAND ; SATURATION ; SORPTION ; WETLANDS ; INDEXES |
WOS研究方向 | Agriculture |
语种 | 英语 |
WOS记录号 | WOS:000761635700001 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://ir.yic.ac.cn/handle/133337/31495] |
专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
通讯作者 | Xu, Gang |
作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai, Peoples R China 3.Qufu Normal Univ, Sch Geog & Tourism, Rizhao, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Gang,Yue, Mengyu,Song, Jiawei,et al. Development of soil phosphorus storage capacity for phosphorus retention/release assessment in neutral or alkaline soils[J]. PLANT SOIL AND ENVIRONMENT,2022:9. |
APA | Xu, Gang,Yue, Mengyu,Song, Jiawei,Chen, Xiaobing,&Ren, Yuxuan.(2022).Development of soil phosphorus storage capacity for phosphorus retention/release assessment in neutral or alkaline soils.PLANT SOIL AND ENVIRONMENT,9. |
MLA | Xu, Gang,et al."Development of soil phosphorus storage capacity for phosphorus retention/release assessment in neutral or alkaline soils".PLANT SOIL AND ENVIRONMENT (2022):9. |
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