亚博app

稳定碳同位素在草地生态系统碳循环中的应用与展望
1, 1,2

(1.ningxiadaxue nongxueyuan, yinchuan 750021; 2.xibeituihuashengtaixitonghuifuyuzhongjianguojiazhongdianshiyanshipeiyujidi, yinchuan 750021)

; δ13 C值;;;

Application and Prospect of Stable Carbon Isotope to the Study of Carbon Cycle in Grassland Ecosystem
ZHANG Hao1, LI Jianping1,2

亚博app (1.school of agriculture, ningxia university, yinchuan 750021, china; 2.breeding base of state key laboratory for preventing land degradation and ecological restoration, ningxia university, yinchuan 750021, china)

; δ13亚博appC values;;;

备注

liyongwendingtantongweisulaizhuizongshengtaixitongwuzhixunhuanhenengliangliudong,dingliangshizongshengtaixitongzhongtanyuansudezhuanyi,mingqueshengtaixitongtanxunhuanjiqiqudongjizhi,yijingchengweimuqianyanjiushengtaixitongtanxunhuandeyigezhongyaoshouduan。wendingtantongweisujishuzaicaodishengtaixitongtanxunhuanzhongdeyingyongzhuyaobaokuopandingshengtaixitongzhongtandelaiyuanhetonghua,zhiwu—turangxitongzhongtandezhuanyiheguding,caodishencengturangyoujitanbianqianguocheng,butongleixingcaodiδ13 czhifenbutezhengyijitongweisumoxingpanbieshengtaixitongtanjigongxianbili。tongguoshulihefenxiwendingtantongweisuzaicaodishengtaixitongzhongdeliyongfangfaheguanjianjishu,weimingqueshengtaixitongtanxunhuandequdongjizhihequanqiuqihoubianhuaduitanliudongdexiangyingjilitigongyiju。wendingtantongweisujishuduishengtaixitongganraohenxiao,jiancekuaisu、zhunque,duiyanjiushengtaixitongtansuliudong,zhibeibianqianjishengtaixitongzufentanlaiyuanpandinghegongxianbilitigongkekaozhicheng。

亚博apputilizing stable carbon isotopes to trace the nutrient circulation and energy flow in ecosystem, trace the dynamics of carbon transfer in ecosystem quantitatively, and clarify the ecosystem carbon cycle and its driving mechanism has become an important technique for the study of the carbon cycle of ecosystem. these studies cover carbon sources and assimilation in ecosystem determined by stable carbon isotopes, carbon transfer and fixation in plant-soil system, organic carbon transfer processes in deep soils, distribution characteristics of δ13c values in different types of grassland, as well as identification of carbon sources and contribution of components to ecosystem by isotope model. for providing an investigated reference for the driving mechanism of carbon cycle inecosystem and the response mechanism of global climate change to carbon flow, we reviewed the utilization methods and key technologies of stable carbon isotopes in grassland ecosystem. meanwhile, stable carbon isotope technique is a rapid, accurate and efficient measurement, and hardly affects the function of ecosystem. stable carbon isotope techniquecan provide credible supports for studies on carbon flow in ecosystem, vegetation change, and source determination and contribution proportion of carbon in ecosystem.

金沙体育-金沙体育官网 亚博app yabo88_yabo88官网-「开户首充送大礼」 英亚国际 十大网投信誉平台-全球十大信誉网投平台-亚博app