{"title":"桃子与 Hylotelephium spectabile 间作对镉吸收、根瘤土壤特性和植物修复效率的影响","authors":"Junxing Yang , Mengke He , Xiaofei Meng","doi":"10.1016/j.ecoleng.2024.107356","DOIUrl":null,"url":null,"abstract":"<div><p>An effective strategy for the safe utilization of Cd-contaminated soil involves the cultivation of crop varieties with low Cd accumulation in conjunction with a hyperaccumulator such as <em>Hylotelephium spectabile</em>. In this study, the peach cultivar ‘Lvhuajiu’ was intercropped with two ecological types of <em>H. spectabile</em>, ‘Liaoning (LN)’ and ‘Hebei (HB)’, to explore plant Cd uptake and rhizosphere soil properties. The results revealed that under pot intercropping conditions, the roots of the ‘Lvhuajiu’ peach tree engaged in nutrient competition, which increased biomass production. A maximum of 68.02% reduction in Cd content was observed in peach tree roots under open intercropping with <em>H. spectabile</em> LN. <em>H. spectabile</em> absorbed more available Cd under intercropping, and LN had a higher Cd absorption capacity than HB. The removal efficiency under restrictive intercropping (0.34%–0.50%) was slightly lower than that under open intercropping (0.62%–0.67%). Intercropping systems were highly abundant in <em>Proteobacteria</em>, <em>Acidobacteria</em>, <em>Bacterodietes</em>, and <em>Actinobacteria</em>, which are essential for the elimination of Cd and cycling of nutrients. Furthermore, the field experiment showed that peach and <em>H. spectabile</em> intercropping could achieve a 4.11% removal efficiency per year under water-soluble chitosan addition. Besides, Cd concentrations in the peaches under all treatments remained below the national food standard of 0.05 mg·kg<sup>−1</sup>. In conclusion, intercropping peaches with <em>H. spectabile</em> facilitates the safe utilization of Cd-contaminated soil by modifying rhizospheric soil properties, underscoring its considerable potential for a wide range of applications.</p></div>","PeriodicalId":11490,"journal":{"name":"Ecological Engineering","volume":"207 ","pages":"Article 107356"},"PeriodicalIF":3.9000,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effects of intercropping peaches with Hylotelephium spectabile on Cd uptake, rhizosphere soil properties and phytoremediation efficiency\",\"authors\":\"Junxing Yang , Mengke He , Xiaofei Meng\",\"doi\":\"10.1016/j.ecoleng.2024.107356\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>An effective strategy for the safe utilization of Cd-contaminated soil involves the cultivation of crop varieties with low Cd accumulation in conjunction with a hyperaccumulator such as <em>Hylotelephium spectabile</em>. In this study, the peach cultivar ‘Lvhuajiu’ was intercropped with two ecological types of <em>H. spectabile</em>, ‘Liaoning (LN)’ and ‘Hebei (HB)’, to explore plant Cd uptake and rhizosphere soil properties. The results revealed that under pot intercropping conditions, the roots of the ‘Lvhuajiu’ peach tree engaged in nutrient competition, which increased biomass production. A maximum of 68.02% reduction in Cd content was observed in peach tree roots under open intercropping with <em>H. spectabile</em> LN. <em>H. spectabile</em> absorbed more available Cd under intercropping, and LN had a higher Cd absorption capacity than HB. The removal efficiency under restrictive intercropping (0.34%–0.50%) was slightly lower than that under open intercropping (0.62%–0.67%). Intercropping systems were highly abundant in <em>Proteobacteria</em>, <em>Acidobacteria</em>, <em>Bacterodietes</em>, and <em>Actinobacteria</em>, which are essential for the elimination of Cd and cycling of nutrients. Furthermore, the field experiment showed that peach and <em>H. spectabile</em> intercropping could achieve a 4.11% removal efficiency per year under water-soluble chitosan addition. Besides, Cd concentrations in the peaches under all treatments remained below the national food standard of 0.05 mg·kg<sup>−1</sup>. In conclusion, intercropping peaches with <em>H. spectabile</em> facilitates the safe utilization of Cd-contaminated soil by modifying rhizospheric soil properties, underscoring its considerable potential for a wide range of applications.</p></div>\",\"PeriodicalId\":11490,\"journal\":{\"name\":\"Ecological Engineering\",\"volume\":\"207 \",\"pages\":\"Article 107356\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-08-08\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ecological Engineering\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0925857424001812\",\"RegionNum\":2,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ECOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecological Engineering","FirstCategoryId":"93","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925857424001812","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ECOLOGY","Score":null,"Total":0}
Effects of intercropping peaches with Hylotelephium spectabile on Cd uptake, rhizosphere soil properties and phytoremediation efficiency
An effective strategy for the safe utilization of Cd-contaminated soil involves the cultivation of crop varieties with low Cd accumulation in conjunction with a hyperaccumulator such as Hylotelephium spectabile. In this study, the peach cultivar ‘Lvhuajiu’ was intercropped with two ecological types of H. spectabile, ‘Liaoning (LN)’ and ‘Hebei (HB)’, to explore plant Cd uptake and rhizosphere soil properties. The results revealed that under pot intercropping conditions, the roots of the ‘Lvhuajiu’ peach tree engaged in nutrient competition, which increased biomass production. A maximum of 68.02% reduction in Cd content was observed in peach tree roots under open intercropping with H. spectabile LN. H. spectabile absorbed more available Cd under intercropping, and LN had a higher Cd absorption capacity than HB. The removal efficiency under restrictive intercropping (0.34%–0.50%) was slightly lower than that under open intercropping (0.62%–0.67%). Intercropping systems were highly abundant in Proteobacteria, Acidobacteria, Bacterodietes, and Actinobacteria, which are essential for the elimination of Cd and cycling of nutrients. Furthermore, the field experiment showed that peach and H. spectabile intercropping could achieve a 4.11% removal efficiency per year under water-soluble chitosan addition. Besides, Cd concentrations in the peaches under all treatments remained below the national food standard of 0.05 mg·kg−1. In conclusion, intercropping peaches with H. spectabile facilitates the safe utilization of Cd-contaminated soil by modifying rhizospheric soil properties, underscoring its considerable potential for a wide range of applications.
期刊介绍:
Ecological engineering has been defined as the design of ecosystems for the mutual benefit of humans and nature. The journal is meant for ecologists who, because of their research interests or occupation, are involved in designing, monitoring, or restoring ecosystems, and can serve as a bridge between ecologists and engineers.
Specific topics covered in the journal include: habitat reconstruction; ecotechnology; synthetic ecology; bioengineering; restoration ecology; ecology conservation; ecosystem rehabilitation; stream and river restoration; reclamation ecology; non-renewable resource conservation. Descriptions of specific applications of ecological engineering are acceptable only when situated within context of adding novelty to current research and emphasizing ecosystem restoration. We do not accept purely descriptive reports on ecosystem structures (such as vegetation surveys), purely physical assessment of materials that can be used for ecological restoration, small-model studies carried out in the laboratory or greenhouse with artificial (waste)water or crop studies, or case studies on conventional wastewater treatment and eutrophication that do not offer an ecosystem restoration approach within the paper.