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学科主题: 生物科学::普通生物学
题名: Seeding ratios and phosphate fertilizer on ecosystem carbon exchange of common vetch and oat
作者: Luo, CY (Luo, Caiyun)1; Wang, SP (Wang, Shiping)2, 3, 4, 5; Zhao, L (Zhao, Liang)1; Xu, SX (Xu, Shixiao)1
通讯作者: Wang, SP
关键词: QINGHAI-TIBETAN PLATEAU ; BIOLOGICAL NITROGEN-FIXATION ; LAND-USE CHANGE ; ALPINE MEADOW ; TEMPERATE GRASSLAND ; CO2 EXCHANGE ; PHOSPHORUS ; NODULES ; FLUXES ; PLANTS
刊名: NUTRIENT CYCLING IN AGROECOSYSTEMS
发表日期: 2017
DOI: 10.1007/s10705-017-9873-7
卷: 109, 期:2, 页:149-160
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Soil Science ; Agriculture
研究领域[WOS]: Agriculture
英文摘要: Few studies have investigated the effect of phosphate (P) fertilizer on net ecosystem CO2 exchange (NEE) and its components under mixed legume and grass pastures sown, which will limit our understanding about their effects on carbon (C) sequestration in soils. Our aim was to test the hypothesis that a combination of legumes with grass and P fertilizer increases NEE due to greater increases in gross primary productivity (GPP) compared to increases in ecosystem respiration (Re).We measured NEE, GPP and Re under 5 different seeding ratios of oat (Avena sativa L.) and common vetch (Vicia sativa L.) according to their thousand kernel weight and germination rate (i.e., seeding rate were: M1: 0:150, M2: 150:105, M3: 300:75, M4: 450:45 and M5: 600:0) with and P unfertilized on the Tibetan Plateau from 2011 to 2013. NEE was measured at 1-week intervals from June to September each year using a transparent chamber technique (Licor-6400). Our results showed that both P fertilizer and mixed ratio had significant effect on NEE, Re and GPP, but their interactive effects were not significant during the growing season. P fertilizer primarily increased NEE due to increased GPP for the monoculture and mixtures with a higher proportion of common vetch. NEE, Re and GPP were higher for the mixed pastures only compared with legume monoculture. From the perspective of forage yield and C sequestration, planting mixed legume-grass pastures with P fertilizer is a preferable way to balance the twin objectives of forage production and C sequestration in alpine regions.
语种: 英语
WOS记录号: WOS:000412459700004
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7960
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Northwest Inst Plateau Biol, Xining 810008, Qinghai, Peoples R China.
2.Chinese Acad Sci, Key Lab Alpine Ecol & Biodivers, Inst Tibetan Plateau Res, Beijing 100101, Peoples R China.
3.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Tibet Univ, Naqu Integrated Observat & Res Stn Ecol & Environ, Lasa 850012, Peoples R China.
5.Chinese Acad Sci, Inst Tibetan Plateau Res, Lasa 850012, Peoples R China.

Recommended Citation:
Luo, CY ,Wang, SP ,Zhao, L ,et al. Seeding ratios and phosphate fertilizer on ecosystem carbon exchange of common vetch and oat[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2017,109(2):149-160.
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