Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1002/jpln.202000218 |
| Biological soil crusts enhance moisture and nutrients in the upper rooting zone of sandy soil agroecosystems | |
| Nevins, Clayton J.; Strauss, Sarah L.; Inglett, Patrick W. | |
| 通讯作者 | Inglett, PW |
| 来源期刊 | JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
 |
| ISSN | 1436-8730 |
| EISSN | 1522-2624 |
| 出版年 | 2020 |
| 卷号 | 183期号:5页码:615-626 |
| 英文摘要 | Background:Biological soil crusts (biocrusts) are commonly found in arid ecosystems and are known to have increased carbon (C) and nitrogen (N) concentrations compared to non-crusted soil. Similar biocrusts were recently identified in Florida, USA sandy soil agroecosystems where they could impact soil biogeochemical cycling, particularly of C and N, in the crop rooting zone. Aims:Therefore, this research assessed the impacts of biocrusts on soil moisture, available and microbial C and N concentrations, and soil stable N isotopic ratios (delta N-15) in the upper rooting zone (0-15 cm) below biocrusts compared to nearby control bare soils without biocrusts. Methods:Intact soil cores (0-15 cm) were collected from crusted and non-crusted (control) locations in three sandy soil, citrus agroecosystems. Soil cores were partitioned into three depths: a surface (0-1 cm), a middle (1-5 cm), and a subsurface depth (5-15 cm), and were analyzed for soil moisture and multiple C and N cycling pools. Results:Biocrust presence and sampling depth (0-1 cm, 1-5 cm, and 5-15 cm) had significant impacts on soil physical, chemical, and biological parameters at the sites. All sites had increased bulk total C and total N, soluble (ammonium, nitrate, dissolved organic N, and salt extractable C), and microbial (microbial biomass C/N) C and N concentrations in the biocrust surface depth compared to the control without biocrusts. Nitrate and total inorganic N (ammonium + nitrate) were enriched below biocrusts (1-5 cm) with one site having 96% and 71% more nitrate and total inorganic N, respectively, under biocrusts compared to controls. This additional plant-available N was likely provided by the biocrust, as indicated by the delta N-15. Further, the soil below biocrusts (1-5 cm) at one agroecosystem had 44% more microbial biomass C and a significantly lower MBC:MBN than soil without biocrusts. Conclusions:Overall, results illustrate these naturally occurring biocrusts have the potential to benefit agroecosystems by enriching soil C and N in the crop rooting zone, indicating the potential for biocrusts to effect overall soil quality and health. |
| 英文关键词 | biocrust citrus microbial biomass microbiotic plant-available nitrogen stable nitrogen isotopic ratio |
| 类型 | Article |
| 语种 | 英语 |
| 开放获取类型 | Bronze |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000568738400001 |
| WOS关键词 | XERIC FLORIDA SHRUBLAND ; HILLY LOESS PLATEAU ; MICROBIAL BIOMASS ; ORGANIC-CARBON ; NITROGEN-FIXATION ; COMMUNITY COMPOSITION ; SUCCESSIONAL STAGES ; COVER CROPS ; DESERT ; BIOCRUSTS |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/326223 |
| 作者单位 | [Nevins, Clayton J.; Strauss, Sarah L.; Inglett, Patrick W.] Univ Florida, Coll Agr & Life Sci, Dept Soil & Water Sci, 1692 McCarty Dr, Gainesville, FL 32603 USA; [Nevins, Clayton J.; Strauss, Sarah L.] Univ Florida, Inst Food & Agr Sci, Southwest Florida Res & Educ Ctr, 2685 FL-29, Immokalee, FL 34142 USA |
| 推荐引用方式 GB/T 7714 | Nevins, Clayton J.,Strauss, Sarah L.,Inglett, Patrick W.. Biological soil crusts enhance moisture and nutrients in the upper rooting zone of sandy soil agroecosystems[J],2020,183(5):615-626. |
| APA | Nevins, Clayton J.,Strauss, Sarah L.,&Inglett, Patrick W..(2020).Biological soil crusts enhance moisture and nutrients in the upper rooting zone of sandy soil agroecosystems.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,183(5),615-626. |
| MLA | Nevins, Clayton J.,et al."Biological soil crusts enhance moisture and nutrients in the upper rooting zone of sandy soil agroecosystems".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 183.5(2020):615-626. |
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