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科研机构
水土保持研究所 [2]
烟台海岸带研究所 [1]
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期刊论文 [3]
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2019 [1]
2006 [2]
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碳氮稳定同位素比值在潮间带大型底栖动物组织间差异性研究
期刊论文
海洋学报, 2019, 卷号: 41, 期号: 4, 页码: 74-82
作者:
李宝泉
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浏览/下载:37/0
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提交时间:2020/06/17
潮间带
大型底栖动物
碳氮稳定同位素
食源和营养级分析
采样部位选取
intertidal zone
macrobenthos
carbon and nitrogen stable isotopes
food sources and trophic levels study,sampling parts
The technique of stable isotope analysis has been widely applied for the field of food web studies in recent years.However,few researches concerned about the impacts of different tissues used for analysis on the food web building.With the purpose of accuracy and comparability in the food web studies,the sampling tissues should be standardized.In this study,10macrobenthic species from the intertidal zone of the Yellow River Delta and Yantai were chosen as the target object to test the isotopic characteristic variations ofdelta~(13)C anddelta15 N at different body parts (whole bodies,muscles and gills).Our results show thatdelta~(13)C anddelta15 N values vary in different sampling tissues for most species,which indicates the different tissues used for analysis impact the food web building.To achieve a more accuracy and comparability result,suitable tissue should be primarily chosen for their food sources and trophic levels analysis.Namely,when the organism as predator,their muscles should first be chosen,for examples,adductor and foot muscles of mollusks,leg muscles of crabs and back muscles of fishes
when the organism as prey, most of their tissues,except for indigestible part(for polychaetes,the digestive tract contents should be removed) should be chosen for analysis on food sources and trophic levels of the secondary consumer,for example,whole soft parts of mollusks,the mixture of muscles and gills of crabs.
Effect of nitrogen management on yield and water use efficiency of rainfed wheat and maize in Northwest China
期刊论文
PEDOSPHERE, 2006, 卷号: 16, 期号: 4, 页码: 495-504
Dang Ting-Hui
;
Cai Gui-Xin
;
Guo Sheng-Li
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浏览/下载:10/0
  |  
提交时间:2012/06/15
wheat
maize
N-15 studies
water use efficiency
yield
Effect of nitrogen management on yield and water use efficiency of rainfed wheat and maize in Northwest China
期刊论文
PEDOSPHERE, 2006, 卷号: 16, 期号: 4, 页码: 495-504
Dang Ting-Hui
;
Cai Gui-Xin
;
Guo Sheng-Li
收藏
  |  
浏览/下载:14/0
  |  
提交时间:2012/06/15
wheat
maize
N-15 studies
water use efficiency
yield
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