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首页> 外文期刊>Journal of Environmental Management >Biomass carbon, nitrogen and phosphorus stocks in hybrid poplar buffers, herbaceous buffers and natural woodlots in the riparian zone on agricultural land
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Biomass carbon, nitrogen and phosphorus stocks in hybrid poplar buffers, herbaceous buffers and natural woodlots in the riparian zone on agricultural land

机译：农田河岸带杂种杨树缓冲带，草本缓冲带和天然林地中的生物量碳，氮和磷储量

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摘要

In many temperate agricultural areas, riparian forests have been converted to cultivated land, and only narrow strips of herbaceous vegetation now buffer many farm streams. The afforestation of these riparian zones has the potential to increase carbon (C) storage in agricultural landscapes by creating a new biomass sink for atmospheric CO_2. Occurring at the same time, the storage of nitrogen (N) and phosphorus (P) in plant biomass, is an important water quality function that may greatly vary with types of riparian vegetation. The objectives of this study were (1) to compare C, N and P storage in aboveground, belowground and detrital biomass for three types of riparian vegetation cover (9-year-old hybrid poplar buffers, herbaceous buffers and natural woodlots) across four agricultural sites and (2) to determine potential vegetation cover effects on soil nutrient supply rate in the riparian zone. Site level comparisons suggest that 9-year-old poplar buffers have stored 9-31 times more biomass C, 4-10 times more biomass N, and 3-7 times more biomass P than adjacent non managed herbaceous buffers, with the largest differences observed on the more fertile sites. The conversion of these herbaceous buffers to poplar buffers could respectively increase C, N and P storage in biomass by 3.2-11.9 t/ha/yr, 32-124 kg/ ha/yr and 3.2-15.6 kg/ha/yr, over 9 years. Soil NO_3 and P supply rates during the summer were respectively 57% and 66% lower in poplar buffers than in adjacent herbaceous buffers, potentially reflecting differences in nutrient storage and cycling between the two buffer types. Biomass C ranged 49 -160 t/ha in woodlots, 33-110 t/ha in poplar buffers and 3-4 t/ha in herbaceous buffers. Similar biomass C stocks were found in the most productive poplar buffer and three of the four woodlots studied. Given their large and varied biomass C stocks, conservation of older riparian woodlots is equally important for C balance management in farmland. In addition, the establishment of poplar buffers, in replacement of non managed herbaceous buffers, could rapidly increase biomass C, N and P storage along farm streams, which would be beneficial for water quality protection and global change mitigation.
机译：在许多温带农业地区，河岸森林已转变为耕地，现在只有狭窄的草本植物带缓冲了许多农业流。这些河岸带的绿化有可能通过为大气中的CO_2创建一个新的生物量汇来增加农业景观中的碳（C）储存。同时，植物生物量中氮（N）和磷（P）的存储是一项重要的水质函数，可能会随着河岸植被类型的不同而发生很大变化。这项研究的目的是（1）比较四种农业上三种类型的河岸植被覆盖物（9岁杂种杨树缓冲液，草本缓冲液和天然林地）在地上，地下和碎屑生物量中的C，N和P储存量。 （2）确定潜在的植被覆盖对河岸带土壤养分供应率的影响。站点水平的比较表明，使用9年的杨树缓冲液比相邻的非管理型草木缓冲液存储的生物量C多9-31倍，生物量N多4-10倍，生物质P多3-7倍，观察到的最大差异在更肥沃的地方这些草本缓冲剂向杨树缓冲剂的转化可以使生物量中的C，N和P储存量分别增加3.2-11.9吨/公顷/年，32-124千克/公顷/年和3.2-15.6千克/公顷/年。年份。在夏季，杨树缓冲液的土壤NO_3和P的供应速率分别比相邻的草本缓冲液低57％和66％，这可能反映了两种缓冲液在养分存储和循环方面的差异。在林地中，生物质C的含量范围为49 -160 t / ha，在杨树缓冲液中为33-110 t / ha，在草本缓冲液中为3-4 t / ha。在生产力最高的杨树缓冲区和所研究的四个林地中的三个中，发现了相似的生物量碳库。鉴于其大量多样的生物量碳储量，对河岸较旧林地的保护对于农田中碳平衡管理同样重要。此外，建立杨树缓冲液来代替未经管理的草本缓冲液，可以迅速增加沿农场流的生物量碳，氮和磷的储存量，这对于保护水质和减轻全球变化是有益的。

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  • 来源
    《Journal of Environmental Management》 |2015年第1期|333-345|共13页
  • 作者

    Julien Fortier; Benoit Truax; Daniel Gagnon; France Lambert;

  • 作者单位

    Fiducie de recherche sur la foret des Cantons-de-l'Est/Eastern Townships Forest Research Trust, 1 Rue Principale, Saint-Benoit-du-Lac, QC J0B 2M0, Canada,Departement des sciences biologiques, Universite du Quebec a Montreal, C.P. 8888 succ. Centre-ville, Montreal, QC H3C 3P8, Canada;

    Fiducie de recherche sur la foret des Cantons-de-l'Est/Eastern Townships Forest Research Trust, 1 Rue Principale, Saint-Benoit-du-Lac, QC J0B 2M0, Canada;

    Fiducie de recherche sur la foret des Cantons-de-l'Est/Eastern Townships Forest Research Trust, 1 Rue Principale, Saint-Benoit-du-Lac, QC J0B 2M0, Canada,Department of Biology, University of Regina, 3737 Wascana Parkway, Kegina, SK S4S 0A2, Canada;

    Fiducie de recherche sur la foret des Cantons-de-l'Est/Eastern Townships Forest Research Trust, 1 Rue Principale, Saint-Benoit-du-Lac, QC J0B 2M0, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Agroforestry; Aboveground biomass; Belowground biomass; Detrital biomass; C; N and P concentrations; Soil nutrient availability (supply rates);

    机译：农林业地上生物量;地下生物量;碎屑生物量C;氮和磷浓度;土壤养分利用率（供应率）;

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