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- W2385365087 abstract "During the time period of 1991—2007,animal types and population of the livestock operation systems in the Xiaoqinghe River watershed experienced changes.Based on the statistical data collected at county scale,we analyzed the change trends of manure production as well as nitrogen(N) pollution loading rate in time and space for the watershed.The results indicated that the annual manure productions(counted in pig manure equivalent) varied year-by-year basically following the pattern of changes in the livestock population.The livestock operation systems located along the upstream of the Xiaoqinghe River produced about 58% of the watershed manure production,and hence dominated the watershed N pollution.The livestock-oriented N loading rate was 116 kg N·hm-2 in average although the rates varied greatly across the counties within the watershed.Alarge number of counties or districts located in the upstream of the watershed had the N pollution loading rates higher than the EU threshould level(250 kg N·hm-2).Especially in Lixia and Tianqiao districts,the N loading rates were as high as 2 000 kg N·hm-2.The livestock manure contamination has formed a severe threat for the water use safety for the region." @default.
- W2385365087 created "2016-06-24" @default.
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- W2385365087 date "2011-01-01" @default.
- W2385365087 modified "2023-09-27" @default.
- W2385365087 title "Changes in Livestock Operation Systems and Their Contributions to Manure Nitrogen Pollution Loading in Xiaoqinghe Watershed,China" @default.
- W2385365087 hasPublicationYear "2011" @default.
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