Effects of rock fragments on yak dung greenhouse gas emissions on the Qinghai-Tibetan Plateau
Effects of rock fragments on yak dung greenhouse gas emissions on the Qinghai-Tibetan Plateau
复制标题
青藏高原岩石碎片对牦牛粪温室气体排放的影响
DOI：
10.1007/s11629-015-3798-x
复制
发表时间：
2016-10
影响因子：
2.5
通讯作者：
Cai Yanjiang
中科院分区：
文献类型：
--
作者：
Du Ziyin;Wang Xiaodan;Liu Xiuping;Cai Yanjiang
Dung deposition is an important pathway of nutrient return and redistribution in alpine grasslands of the Qinghai-Tibetan Plateau. To date, information on the greenhouse gas emissions of yak dung on alpine grasslands, especially where there are large amounts of rock fragments, is limited. Our aim, therefore, was to evaluate variations in N2O, CH4, and CO2emissions from yak dung (CCD), and compare it to dung placed on rock fragments (RCD), alpine steppe soil (CSD), and a soil and rock fragment mixture (RSD) over a 30-day incubation period. The results showed that the total N2O emissions from treatments without soil were significantly (P< 0.05) lower than those from treatments with soil. The highest total CH4 emissions were detected in the CSD treatment, while CH4losses from treatments without rock fragments were significantly (P< 0.05) greater than those with rock fragments. The total CO2emissions from the RSD treatment was 6.30%–12.0% lower than those in the other three treatments. The soil beneath yak dung pats elevated the global warming potential (GWP), while the addition of rock fragments to the soil significantly (P< 0.05) decreased the GWP by reducing emissions of the three greenhouse gases. We therefore suggest that interactions between rock fragments and alpine steppe soil are effective in decreasing yak dung greenhouse gas emissions. This finding indicates that rock fragments are an effective medium for reducing greenhouse gas emissions from dung pats, and more attention should therefore be paid to evaluate its ecological impact in future studies. These results should help guide scientific assessments of regional GHG budgets in agricultural ecosystems where the addition of livestock manure to soils with large amounts of rock fragments is common.
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影响因子：
--
作者：
K. Smith
通讯作者：
K. Smith
影响因子：
4.9
作者：
Farquharson, Ryan;Baldock, Jeff
通讯作者：
Baldock, Jeff
影响因子：
9.7
作者：
Deslippe, Julie R.;Jamali, Hiz;Saggar, Surinder
通讯作者：
Saggar, Surinder
DOI：
10.1002/1097-0231(20000815)14:15
发表时间：
2000-08
期刊：
Rapid communications in mass spectrometry : RCM
影响因子：
--
作者：
T. Streeter;R. Bol;R. Bardgett
通讯作者：
T. Streeter;R. Bol;R. Bardgett
影响因子：
4.2
作者：
Ambus, P
通讯作者：
Ambus, P