发育于荒漠草原下的棕钙土,其氮素与灰分的生物积累具有明显的特点。其地上部分氮素年积累量为1.43g·m-2地下部分氮素积累量27.14g·m-2,且大苟分集中在0-30cm土层。灰分积累也表现出相同趋势,灰分总生物积累达280.89g·m-2。
The bioaccumulation of nitrogen and ash of brown soil of desert steppe is different from other soils in Inner Mongolia. The aboveground bioaccumulation of nitrogen is 1.43g/m2, making up 5.01% of the total bioaccumulation,among which the bioaccumulation of Artemisia pectinata is the highest, being 54.32% of the aboveground bioaccumulation. The undergrrond bioaccumulation of nitrogen is 27.14g/m2, amounting to 94.99% of the total bioaccumulation of nitrogen,but the accumulation of nitrogen in 0—30cm is 80.24% of the total underground bioaccumulation. The accumulation of ash shows a similar trend. The total bioaccumulation of ash is 280.69g/m2. The bioaccumulation of underground and aboreground is 95.92% and 4.08% of the total bioaccumulation of ash respectively.
[1] 中国科学院内蒙古宁夏综合考察队、中国科学院南京上壤研究所:内蒙古自治区与东北西部地区土壤地理,科学出版社,1978年。
[2] 汪安球:内蒙古荒漠草原棕钙土的形成及其特性,土壤学报,10(4), 1962年。
[3] 陈佐忠、李济尚,黄德华:内蒙古乌兰察布短花针茅草原生物量动态的初步分析,干早区资源与环境,2(2),1988年。
[4] 陈佐忠,黄德华:内蒙古锡林河流域栗钙土形成的植被条件与栗钙土形成过程的初步研究,地理科学,5(4),1985年。
[5] 陈佐忠、黄德华:内蒙古锡林河流域草甸草原的特点及其对黑钙土形成过程的影响,地理科学,8(1),1988年。
