CAJ | 학술논문

　　河流碳输出过程构成全球碳循环的一个重要环节。基于一个完整水文年的月周期性采样分析，讨论了五华河径流中悬浮颗粒有机质（POM）的性质及其来源，估算了流域有机质的输出通量。结果表明：五华河径流中颗粒有机碳（POC）和颗粒有机氮（PON）的平均含量分别为0.77 mg/L和0.12 mg/L，其中汛期含量高于枯水期；五华河河流总悬浮颗粒物（TSS）、 POC、 PON含量以及河流颗粒有机质C/N比与流量的关系揭示五华河径流中POM主要源自流域土壤有机质的侵蚀，而且在迁移过程中受到水体微生物的分解；五华河流域POC和PON年输出通量分别为430 kg/（km 2.a）和70 kg/（km 2.a），其中汛期POC和PON输出量分别占全年输出总量的74.23％和76.17％。
　　하류탄수출과정구성전구탄순배적일개중요배절。기우일개완정수문년적월주기성채양분석，토론료오화하경류중현부과립유궤질（POM）적성질급기래원，고산료류역유궤질적수출통량。결과표명：오화하경류중과립유궤탄（POC）화과립유궤담（PON）적평균함량분별위0.77 mg/L화0.12 mg/L，기중신기함량고우고수기；오화하하류총현부과립물（TSS）、 POC、 PON함량이급하류과립유궤질C/N비여류량적관계게시오화하경류중POM주요원자류역토양유궤질적침식，이차재천이과정중수도수체미생물적분해；오화하류역POC화PON년수출통량분별위430 kg/（km 2.a）화70 kg/（km 2.a），기중신기POC화PON수출량분별점전년수출총량적74.23％화76.17％。
Carbon transportation by river system constitutes a key link of the global carbon cycle .Based on monthly sampling and analysis of riverine particulate organic matter for a full hydrological year in the Wuhua River, eastern Guangdong Province , the characteristics and sources of particulate organic matter in the river were discussed and carbon transport fluxes were estimated .The results show that the average contents of particulate organic carbon (POC) and particulate organic nitrogen (PON) in the Wuhua Riv-er are 0.77 mg/L and 0.12 mg/L, respectively, which are much higher during the flood season than those during the dry season.The relationships between discharge and the TSS , POC, PON contents, and the ratio of C to N reveal that the POM of the Wuhua River is mainly from soil organic matter within the drainage basin, which is decomposed by microorganisms during transportation .POC and PON fluxes ex-ported by the Wuhua River are 430 kg/(km 2.a) and 70 kg/(km 2.a), respectively.The output fluxes in the flood season account for 74.23%and 76.17%of the total annual output.