Knowledge Management System of Northwest Institute of Plateau Biology, CAS
Effects of land use and management on ecosystem respiration in alpine meadow on the Tibetan plateau | |
Zhang, Zhenhua2,3; Duan, Jichuang2,3; Wang, Shiping1,4; Luo, Caiyun2; Chang, Xiaofeng2,3; Zhu, Xiaoxue2,3; Xu, Burenbayin2,3; Wang, Wenying5 | |
2012-08-01 | |
发表期刊 | SOIL & TILLAGE RESEARCH |
ISSN | 0167-1987 |
卷号 | 124页码:161-169 |
文章类型 | Article |
摘要 | Land use change and management practices have greatly affected global carbon dynamics, especially the critical process of ecosystem respiration (Re). Our aim was to assess how Re and Re intensity (Re per unit aboveground biomass) are affected by land use (i.e. native alpine meadow with winter grazing (NAM), abandoned cropland/pastureland (APL), perennial Elymus nutans (PEN) and annual Avena sativa L pasture (AO)) and management practices (i.e. nitrogen (N) inorganic fertilizer or sheep manure for APL PEN and AO, tillage and no-tillage for AO) in a Gelic Cambisol soil underlying alpine meadow on the Tibetan plateau from 2008 to 2010. In the present study we hypothesized that (1) the conversion of abandoned cropland/pastureland to pasturelands would increase Re and Re intensity; (2) natural restoration following the abandonment of cropland/pastureland would decrease Re and Re intensity; and (3) management practices mentioned above would reduce the magnitude of the effects of land use change on Re and Re intensity in the alpine meadow ecosystem. Generally, our results did not support our hypotheses. There were no significant differences between annual average Re in NAM and APL, while the annual average Re for native meadows were 2-3 times higher than that of pasturelands in 2008. Re intensities for PEN and AO were 1.7 times lower than NAM and APL, and Re intensity was higher for APL than for NAM in 2010. Management practices did not significantly affect Re and Re intensity for PEN and AO treatments, except for the interaction between tillage and year on the Re of AO in 2010. The results suggest that conversion of abandoned cropland/pastureland to pastureland decreases Re and Re intensity, while natural restoration following the abandonment of cropland/pastureland increased Re intensity. Management practices did not significantly modify the patterns of the effects of land use on Re and Re intensity. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.; Land use change and management practices have greatly affected global carbon dynamics, especially the critical process of ecosystem respiration (Re). Our aim was to assess how Re and Re intensity (Re per unit aboveground biomass) are affected by land use (i.e. native alpine meadow with winter grazing (NAM), abandoned cropland/pastureland (APL), perennial Elymus nutans (PEN) and annual Avena sativa L pasture (AO)) and management practices (i.e. nitrogen (N) inorganic fertilizer or sheep manure for APL PEN and AO, tillage and no-tillage for AO) in a Gelic Cambisol soil underlying alpine meadow on the Tibetan plateau from 2008 to 2010. In the present study we hypothesized that (1) the conversion of abandoned cropland/pastureland to pasturelands would increase Re and Re intensity; (2) natural restoration following the abandonment of cropland/pastureland would decrease Re and Re intensity; and (3) management practices mentioned above would reduce the magnitude of the effects of land use change on Re and Re intensity in the alpine meadow ecosystem. Generally, our results did not support our hypotheses. There were no significant differences between annual average Re in NAM and APL, while the annual average Re for native meadows were 2-3 times higher than that of pasturelands in 2008. Re intensities for PEN and AO were 1.7 times lower than NAM and APL, and Re intensity was higher for APL than for NAM in 2010. Management practices did not significantly affect Re and Re intensity for PEN and AO treatments, except for the interaction between tillage and year on the Re of AO in 2010. The results suggest that conversion of abandoned cropland/pastureland to pastureland decreases Re and Re intensity, while natural restoration following the abandonment of cropland/pastureland increased Re intensity. Management practices did not significantly modify the patterns of the effects of land use on Re and Re intensity. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved. |
关键词 | Land Use Change n Fertilization Sheep Manure No-tillage Plant Production Ecosystem Respiration Intensity |
WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
关键词[WOS] | SOIL CARBON SEQUESTRATION ; GREENHOUSE-GAS MITIGATION ; CO2 EMISSION ; LOAM SOIL ; NITROGEN ; GRASSLAND ; FLUXES ; CHINA ; N2O ; CH4 |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Agriculture |
WOS类目 | Soil Science |
WOS记录号 | WOS:000309015800020 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://210.75.249.4/handle/363003/3628 |
专题 | 中国科学院西北高原生物研究所 |
作者单位 | 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Lab Alpine Ecol & Biodivers, Beijing 100085, Peoples R China 2.Chinese Acad Sci, NW Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Haibei Alpine Meadow Ecosyst Res Stn, Xining 810008, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 4.Univ Tibet, Chinese Acad Sci, Inst Tibetan Plateau Res, Nuqu Ecol & Environm Observat & Res Stn, Naqu 852000, Peoples R China 5.Qinghai Normal Univ, Coll Life & Geog, Xining 810008, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zhenhua,Duan, Jichuang,Wang, Shiping,et al. Effects of land use and management on ecosystem respiration in alpine meadow on the Tibetan plateau[J]. SOIL & TILLAGE RESEARCH,2012,124:161-169. |
APA | Zhang, Zhenhua.,Duan, Jichuang.,Wang, Shiping.,Luo, Caiyun.,Chang, Xiaofeng.,...&Wang, Wenying.(2012).Effects of land use and management on ecosystem respiration in alpine meadow on the Tibetan plateau.SOIL & TILLAGE RESEARCH,124,161-169. |
MLA | Zhang, Zhenhua,et al."Effects of land use and management on ecosystem respiration in alpine meadow on the Tibetan plateau".SOIL & TILLAGE RESEARCH 124(2012):161-169. |
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