Wildflowers and compost amendment can improve infiltration in soils impacted by construction

IF 2.6 4区 环境科学与生态学 Q3 ENGINEERING, ENVIRONMENTAL Journal of The American Water Resources Association Pub Date : 2024-04-11 DOI:10.1111/1752-1688.13202
Shaddy H. Alshraah, Christina N. Kranz, Richard A. McLaughlin, Joshua L. Heitman
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Abstract

Vegetation is an important component of stormwater control measures, as vegetation can reduce erosion and runoff. While grass is typically used in stormwater control measures, wildflowers can be planted to reduce maintenance and improve pollinator habitat. Previous studies have established that tillage followed by establishment of a vigorous vegetation stand can increase infiltration relative to compacted soils. Compost can also improve soil physical properties and fertility. The goal of this study was to evaluate potential improvements in infiltration using tillage together with compost and either grass or wildflowers. Wildflowers or grass were planted on tilled soil with or without compost at three sites in North Carolina. Bulk density, infiltration rate, root mass density, and penetration resistance were measured every 6 months over a 30-month period. A subset of plots received wheel traffic from a mower. Compost application reduced bulk density compared to tillage alone. Compost improved infiltration at two sites (46%–50%). Wildflowers improved infiltration at all sites (30%–43%) compared to grass. Few differences were observed in root mass and penetration resistance. Mower traffic reduced soil improvements more in grassed plots than wildflower plots due to higher mowing frequency. Results suggest compost and/or wildflowers together with tillage (at establishment) provide viable options to improve soil conditions and infiltration rate in construction impacted soils.

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野花和堆肥可以改善受施工影响的土壤的渗透性
植被是雨水控制措施的重要组成部分,因为植被可以减少侵蚀和径流。虽然雨水控制措施通常使用草,但也可以种植野花,以减少维护工作并改善传粉者的栖息地。先前的研究已经证实,耕作后再建立一个生机勃勃的植被带,相对于压实的土壤,可以增加渗透。堆肥还可以改善土壤的物理特性和肥力。本研究的目的是评估耕作与堆肥、草或野花一起使用对入渗的潜在改善效果。在北卡罗来纳州的三个地点,在有或没有堆肥的耕作土壤上种植了野花或草。在 30 个月的时间里,每 6 个月对土壤的体积密度、渗透率、根系密度和渗透阻力进行一次测量。其中一部分地块使用了割草机。与单独耕作相比,施用堆肥降低了体积密度。堆肥改善了两个地点的渗透性(46%-50%)。与草地相比,野花提高了所有地块的入渗率(30%-43%)。根系质量和抗渗透性方面几乎没有差异。由于割草频率较高,与野花地相比,割草机的交通更能改善草地的土壤。研究结果表明,堆肥和/或野花与耕作(建立时)一起为改善受施工影响土壤的土壤条件和渗透率提供了可行的方案。
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来源期刊
Journal of The American Water Resources Association
Journal of The American Water Resources Association 环境科学-地球科学综合
CiteScore
4.10
自引率
12.50%
发文量
100
审稿时长
3 months
期刊介绍: JAWRA seeks to be the preeminent scholarly publication on multidisciplinary water resources issues. JAWRA papers present ideas derived from multiple disciplines woven together to give insight into a critical water issue, or are based primarily upon a single discipline with important applications to other disciplines. Papers often cover the topics of recent AWRA conferences such as riparian ecology, geographic information systems, adaptive management, and water policy. JAWRA authors present work within their disciplinary fields to a broader audience. Our Associate Editors and reviewers reflect this diversity to ensure a knowledgeable and fair review of a broad range of topics. We particularly encourage submissions of papers which impart a ''take home message'' our readers can use.
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