海河流域植物中碳的输出（或存留）量和土壤中的库存量

The Output of Carbon by Plants and the Storage of Carbon in Soils of the Haihe River Basin in North China

研究了海河流域地区植物中碳的输出量（或存留量）和土壤库存量。结果指出：不同作物一土壤系统中各种作物碳的输出量和归还量有很大不同，作物碳输出量一般为归还量的３—１７倍；海河流域地区不同子流域土壤中碳的库存量也有差异，以滹沱河子流域土壤碳的库存量最高，大清河子流域土壤中碳的库存量最低。不同植被类型主要植物叶中碳的存留量以盐生草甸最高，山地灌、草丛最低；不同土壤类型碳的库存量以山地棕壤最高，新积上最低。这些为海河流域土地合理利用和碳的良性循环提供科学依据。

he results show that the output of carbon significantly varied with different crops and so did theamount of carbon which would be returned to thesoils. On average, the former was 3-17 timeshigher than the latter. All the cultural systermshad a higher carbon output than that reverted,with a difference of 6-7 times or more. Thestorage of carbon in soils of the six sub-basinswere also significantly different, with the highestin the Hutuohe River Basin and the lowest in theDaqinghe Basin. Among different vegetations,saline meadow had the highest carbon storage,while mountain shrub and herb had the lowestone. Meanwhile, for different types of soils, thebrunisol soil had the highest storage-of carbon,but the entisol soil stored the lowest carbon suchfindings could provide a scientific basis for thefarmers to wisely use their land and ecologicallybalance the carbon in the areas of Haihe RiverBasin.