摘要
通过对中国典型森林区域土壤剖面的统计计算,分别估算了中国森林土壤表层(0～20cm)和土壤层的平均氮密度和氮库贮量,得出中国森林土壤层的氮密度为34.64tN/hm2,氮库贮量为0.6499PgN;而土壤表层的氮密度为164.37tN/hm2,氮库贮量为2.6493PgN。
Average nitrogen density and total amount of nitrogen in the surface layer (0～20 cm) and the whole soil layers of the major forest soils in China were estimated based on the typical forest soil profiles. In the whole soil layers, the average nitrogen density was (34.64) t N/hm^2 and the nitrogen storage was 0.6499 PgN. In the surface soil layer, the average nitrogen density was 164.37 t N/hm^2 and the nitrogen storage was 2.6493 PgN.
出处
《西南农业大学学报（自然科学版）》
CSCD
北大核心
2004年第5期572-575,579,共5页
Journal of Southwest Agricultural University
基金
中国科学院重大资助项目(KZCX1-SW-01-11)
关键词
森林土壤
氮密度
氮库
forest soil
nitrogen density
nitrogen storage
