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浏览/检索结果: 共5条，第1-5条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 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 收藏  |  浏览/下载：37/0  |  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.   Carbon and Nitrogen Burial and Response to Climate Change and Anthropogenic Disturbance in Chaohu Lake, China 期刊论文 INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 2018, 卷号: 15, 期号: 12, 页码: 18 作者:  Yu, Qibiao;  Wang, Fang;  Yan, Weijin;  Zhang, Fengsong;  Lv, Shucong 收藏  |  浏览/下载：45/0  |  提交时间：2019/05/23 Chaohu Lake  carbon and nitrogen  burial rate  C-13 and N-15 values  C  N  climate change   Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China 期刊论文 CATENA, 2017, 卷号: 156, 页码: 281-289 作者:  Cheng, Xiaoli;  Yang, Wen;  Zhao, Hui;  Leng, Xin;  An, Shuqing 收藏  |  浏览/下载：35/0  |  提交时间：2017/12/31 Carbon-13 and nitrogen-15  Chronosequence  Decomposition of organic matter  Density and size fractionation  Nitrogen cycling  Particulate organic matter   Stable isotope compositions of recent and fossil sun/shade leaves and implications for palaeoenvironmental reconstruction 期刊论文 REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 2013, 卷号: 190, 页码: 75-84 作者:  Xiao, L;  Yang, H;  Sun, BN;  Li, XC;  Guo, JF 收藏  |  浏览/下载：1/0  |  提交时间：2015/12/18 Liquidambar  Xiananshan Formation  stable carbon and nitrogen isotope composition (delta C-13 and delta N-15)  Miocene  sun/shade morphotypes   The impact of agricultural land use changes on soil organic carbon dynamics in the Danjiangkou Reservoir area of China 期刊论文 植物和土壤, 2013 Cheng, Xiaoli; Yang, Yuanhe; Li, Ming; Dou, Xiaolin; Zhang, Quanfa 收藏  |  浏览/下载：5/0  |  提交时间：2015/11/11 Carbon-13  Land use change  Nitrogen-15  Soil fractions  Soil organic carbon cycling  Soil carbon and nitrogen recalcitrance indexes  LITTER DECOMPOSITION  ECOSYSTEM CARBON  STABLE ISOTOPES  MATTER DYNAMICS  NITROGEN  AFFORESTATION  FOREST  ACCUMULATION  STORAGE  POOLS