Water quality effects of peat rewetting and leftover conifer brash, following peatland restoration and tree harvesting
文献类型：期刊论文
| 作者 | Gaffney, Paul P. J.3,4; Tang, Qiuhong2,4; Pap, Sabolc1,3; McWilliam, Anna3; Johnstone, Jacqueline3; Li, Yuan6; Cakin, Ilgaz3; Klein, Daniela5; Taggart, Mark A.3 |
| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
 |
| 出版日期 | 2024-06-01 |
| 卷号 | 360页码:121141 |
| 关键词 | Blanket bog Conifer brash Leaching Forest -to -bog Phosphate DOC |
| DOI | 10.1016/j.jenvman.2024.121141 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | Harvesting of plantation conifers on peatlands is carried out as part of restoration and forestry operations. In particular, in the UK and Ireland, conifer plantations on drained ombrotrophic blanket and raised bogs are increasingly being removed (by harvesting), along with blocking of drainage ditches to help raise water tables to reinitiate and restore bog vegetation and function. However, both tree harvesting and peatland restoration operations can have significant impacts on water quality at local and catchment scales. Previous research has suggested that leaching from leftover decomposing brash (tree tops and branches, including wood and needles) is the primary cause, while other work has suggested that release from rewetted peat also contributes to water quality changes. This research investigates the relative importance of peat rewetting, needles and branches on water quality using mesocosm experiments, to help elucidate the mechanisms behind water quality changes following restoration and harvesting operations. Peat and brash were collected from a drained afforested blanket bog in the Flow Country, Scotland. Short-term mesocosm experiments were conducted by incubating peat, peat + needles and peat + needles + branches with rainwater in quadruplicate. Brash from Sitka spruce (Picea sitchensis) and lodgepole pine (Pinus contorta) was investigated separately, while we also conducted experiments with fresh and aged (similar to 18 months) brash. Peat, needles and branches all significantly impacted water quality in the order of branches > needles > peat, while concentrations of DOC, PO43-, NH4+, K and Mn were most impacted. Water quality impacts of spruce brash appeared generally greater than pine, while fresh brash had larger effects than aged brash. In our mesocosms, relative contributions to water quality changes were estimated by elemental yields. On average, peat contributed 25.4% (range 0.6-72.3%), while needles and brash contributed 19.7% (range 3.0-37.0%) and 54.9% (range 22.1-70.2%) to yields, respectively. We further estimate that 267 kg C ha(-1) (255.8 kg as DOC, 10.7 kg as DIC), 27.4 kg K ha(-1), 5.8 kg P ha(-1) (as PO43-) and 0.5 kg N ha(-1) (as NH4+) could be released from brash, over nine days. |
| WOS关键词 | DISSOLVED ORGANIC-CARBON ; NUTRIENT RELEASE ; SCOTS PINE ; BIOGEOCHEMICAL IMPACTS ; PHOSPHORUS RELEASE ; RESIDUE NEEDLES ; FOREST ; DECOMPOSITION ; NITROGEN ; DYNAMICS |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:001266541500001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206134]  |
| 专题 | 陆地水循环及地表过程院重点实验室_外文论文 |
| 通讯作者 | Li, Yuan |
| 作者单位 | 1.Univ Novi Sad, Fac Tech Sci, Dept Environm Engn & Occupat Safety & Hlth, Trg Dositeja Obradovica 6, Novi Sad 21000, Serbia 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Gaffney, Paul P. J.; Pap, Sabolc; McWilliam, Anna; Johnstone, Jacqueline; Cakin, Ilgaz; Taggart, Mark A.] Univ Highlands & Isl, Environm Res Inst, UHI North West & Hebrides, Thurso KW14 7JD, Caithness, Scotland 4.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 5.RSPB Forsinard Flows, Flows Field Ctr, Forsinard KW13 6YT, Sutherland, Scotland 6.Minist Ecol & Environm, Environm Dev Ctr, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gaffney, Paul P. J.,Tang, Qiuhong,Pap, Sabolc,et al. Water quality effects of peat rewetting and leftover conifer brash, following peatland restoration and tree harvesting[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2024,360:121141. |
| APA | Gaffney, Paul P. J..,Tang, Qiuhong.,Pap, Sabolc.,McWilliam, Anna.,Johnstone, Jacqueline.,...&Taggart, Mark A..(2024).Water quality effects of peat rewetting and leftover conifer brash, following peatland restoration and tree harvesting.JOURNAL OF ENVIRONMENTAL MANAGEMENT,360,121141. |
| MLA | Gaffney, Paul P. J.,et al."Water quality effects of peat rewetting and leftover conifer brash, following peatland restoration and tree harvesting".JOURNAL OF ENVIRONMENTAL MANAGEMENT 360(2024):121141. |
入库方式： OAI收割
来源：地理科学与资源研究所
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