IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Yak dung pat fragmentation affects its carbon and nitrogen leaching in Northern Tibet, China
Du, Ziyin1,2; Wang, Xiaodan2; Xiang, Jian3; Wu, Yong1; Zhang, Bin1; Yan, Yan2; Zhang, Xiaoke4; Cai, Yanjiang5
Corresponding AuthorCai, Yanjiang(yjcai@zafu.edu.cn)
2021-04-15
Source PublicationAGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN0167-8809
Volume310Pages:9
AbstractThe dung excreted by yaks (Bos grunniens) into alpine grasslands on the Qinghai-Tibetan Plateau is an important ecological pathway for returning organic matter and nutrients that are closely linked to soil fertility and grassland productivity. However, few previous studies have investigated the dynamics of carbon (C) and nitrogen (N) associated with yak dung pats, particularly with respect to C and N leaching. This study experimentally investigated the effects of yak dung pat fragmentation on its C and N dynamics in Northern Tibet. Four treatments were examined: a full-size dung pat (control, FDP) and respectively splitting the full-size dung pat into four (1/4FDP), eight (1/8FDP), and sixteen (1/16FDP) equal-sized pats, each within an identical leaching device and had three replicates. The results showed that fragmentation did not influence (P > 0.05) dung total organic C (TOC) and N (TN) concentrations, but it did cause a decrease (P < 0.05) in both ammonium-N (NH4+-N) and nitrate-N (NO3--N) concentrations and also reduced the loss of dry matter (P < 0.05), after 72 days of dung decomposition. Cumulative amounts of dissolved organic C (DOC) and N (DON) leached from the dung were significantly higher in the three fragmentation treatments than in the control (respectively 2.46-3.50 vs. 1.64 g C chamber(-1), 0.14-0.16 vs. 0.10 g N chamber(-1); P < 0.05). However, fragmentation did not always decrease cumulative dung NH4+-N and NO3--N leaching, and neither NH4+-N nor NO3--N leaching (P > 0.05) were affected by the 1/4FDP treatment. The DOC leaching accounted for 1.58-3.36 % of the initial dung TOC input, while the DON, NH4+-N, and NO3--N leaching respectively accounted for 2.34-3.82 %, 0.68-0.87 %, and 0.19-0.27 % of the initial dung TN input. In conclusion, our findings suggest that yak dung pat fragmentation can increase the leaching of DOC and DON and the heavily fragmenting can decrease the leaching of both NH4+-N and NO3--N after short-term dung decomposition in Northern Tibet.
KeywordYak Dung pat fragmentation Dissolved organic carbon Nutrient cycling Qinghai-Tibetan Plateau
DOI10.1016/j.agee.2021.107301
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41807109] ; National Natural Science Foundation of China[41877085] ; National Natural Science Foundation of China[41573070] ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP)[2019QZKK0404] ; National general cultivation project of China West Normal University[17E042] ; National general cultivation project of China West Normal University[18B016]
WOS Research AreaAgriculture ; Environmental Sciences & Ecology
WOS SubjectAgriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS IDWOS:000615985000010
Funding OrganizationNational Natural Science Foundation of China ; Second Tibetan Plateau Scientific Expedition and Research Program (STEP) ; National general cultivation project of China West Normal University
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/55941
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorCai, Yanjiang
Affiliation1.China West Normal Univ, Sch Land & Resources, Nanchong 637009, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
3.Nanjing Forestry Univ, Coll Forestry, Nanjing 210037, Peoples R China
4.Hohai Univ, Sch Publ Adm, Nanjing 210098, Peoples R China
5.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Du, Ziyin,Wang, Xiaodan,Xiang, Jian,et al. Yak dung pat fragmentation affects its carbon and nitrogen leaching in Northern Tibet, China[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2021,310:9.
APA Du, Ziyin.,Wang, Xiaodan.,Xiang, Jian.,Wu, Yong.,Zhang, Bin.,...&Cai, Yanjiang.(2021).Yak dung pat fragmentation affects its carbon and nitrogen leaching in Northern Tibet, China.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,310,9.
MLA Du, Ziyin,et al."Yak dung pat fragmentation affects its carbon and nitrogen leaching in Northern Tibet, China".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 310(2021):9.
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