文献类型： 外文期刊
第一作者： Hua, Lingling
作者： Hua, Lingling;Zhai, Limei;Liu, Hongbin;Hua, Lingling;Liu, Jian;Zhang, Fulin;Fan, Xianpeng
作者机构：
关键词： Non-point source pollution; Irrigation-drainage unit; Phosphorus; Paddy field system
期刊名称：JOURNAL OF ENVIRONMENTAL MANAGEMENT （ 影响因子：6.789； 五年影响因子：6.914 ）
ISSN： 0301-4797
年卷期： 2019 年 235 卷
页码：
收录情况： SCI
摘要： In lowland agriculture, paddy fields are present in the form of irrigation-drainage unit (IDU), which consists of paddy fields and natural ditches around the fields. Phosphorus (P) export from IDUs significantly impacts water quality in adjacent water bodies. In this study, we explored the characteristics and behavior of P in a typical IDU in Jianghan Plain, China. From 2012 to 2015, we measured P concentrations in different water components of the IDU, i.e., rainwater, irrigation water, field ponding water, runoff water and ditch water, and accounted for spatial and temporal variabilities of the P concentrations. Across the rice growing season, the highest total P (TP) concentration was observed in the field ponding water. Total P concentration in ditch water gradually declined and it reached 0.06 mg L-1 at the rice maturation stage. The concentration was lower than that of incoming irrigation water (0.13 mg L-1) and rainwater (0.17 mg L-1). Although both paddy soil and ditch sediment had low degree of P saturation, the ditch sediment had greater P binding energy (1.58 L mg(-1)) and larger maximum P sorption (526 mg kg(-1)) than the soil (0.88 L mg(-1 )and 455 mg kg(-1), respectively). The P mass balance for the rice season over the four consecutive years showed a net depletion of 3.36-8.11 kg P ha(-1) yr(-1). Overall, IDUs substantially reduced the P concentrations in outputs from the IDUs as compared to inputs through irrigation and rainfall. The IDUs functioned for P retention by extending P settling time and natural degradation of P in the system. Optimizing the IDU management by controlling water discharge during fertilization and disturbance periods can be popularized for its cost saving and environmental benefits.
分类号：
- 相关文献
作者其他论文 更多>>
-
Mining neural connectivity via spatiotemporal features of neural calcium activity data
作者：Yuan, Ye;Du, Yuheng;Wen, Wentao;Liu, Jian;Xin, Kuankuan;Liu, Hongjiang;Li, Zhaoyu;Zhang, Amin;Yang, Shiyan;Fang, Tao
关键词：C. elegans; Connectome reconstruction; Graph neural networks; Long short-term memory networks; Whole-brain calcium imaging
-
Comparative study on the application of straw, biochar, dimethylpyrazole phosphate, and polyaspartic acid on nitrogen cycle, soil properties, and yield of potted rice
作者：Jia, Lexin;Chen, Yanxue;Wang, Ziyi;Niu, Chaodan;Yang, Jinhui;Liu, Tai;Liu, Hongbin;Wang, Hongyuan;Wu, Chengyuan
关键词：Comparative study; Straw; Biochar; Nitrification inhibitor; PASP; Pot rice
-
Investigating the compensatory effect of legume reseeding on soil organic carbon loss under tillage management in a saline-alkali grassland in the semi-arid region
作者：Gao, Yang;Zhang, Yuqi;Liu, Jian;An, Yu;Ma, Hongyuan;Tong, Shouzheng
关键词：Carbon sequestration; Compensatory effect; Growth dynamics; Soil properties; Vegetation restoration
-
Polyhydroxyalkanoate production during electroactive biofilm formation and stabilization in wetland microbial fuel cells for petroleum hydrocarbon bioconversion
作者：Zhao, Lanmei;Sun, Mengxue;Meng, Long;Wang, Bo;Lyu, Can;Liu, Jian;Liu, Jian
关键词：PHA production; Biofilm; Bioconversion; Extracellular polymeric substances; Functional microorganisms; Network connections
-
Optimization of Black Garlic Protein Extraction Process and Exploration of Its Properties and Functions with Enzymatic Hydrolysis Products
作者：Liu, Jian;Wang, Yuanyuan;Wang, Bo;Ren, Xiaoyu;Zhang, Youchuang;Jiang, Lijun;Zhao, Guihong;Liu, Jian;Wang, Yuanyuan;Dong, Chunming;Zhang, Wei
关键词：black garlic; extraction process optimization; functional properties; in vitro biological activity
-
Nitrogen and Gray Water Footprints of Various Cropping Systems in Irrigation Districts: A Case from Ningxia, China
作者：Liu, Huan;Zhang, Tianpeng;Du, Xinzhong;Wu, Shuxia;Liu, Hongbin;Liu, Xiaotong;Zhao, Ying;Luo, Jiafa;Qiu, Weiwen
关键词：irrigated areas; life cycle; nitrogen footprint; gray water footprint; LMDI; gray correlation analysis
-
Maturity phase is crucial for removing antibiotic resistance genes during composting: novel insights into dissolved organic matter-microbial symbiosis system
作者：Bai, Bing;Wang, Lixia;Bai, Bing;Guan, Fachun;Pi, Houan;Wang, Anxun;Zhai, Limei
关键词：Livestock and poultry manure; Biotreatment; Excitation-Emission-MatrixSpectra (EEM); Microbial community structure; Antibiotic resistant bacteria (ARB)
