山东省土壤有机碳库及其时空变化特征.pdf

第31卷第2期
现代地质
Vol 31 Na 2
2017年4月
GEOSCIENCE
Apr.2017
山东省土壤有机碳库及其时空变化特征
代杰瑞,庞绪贵,董健,王增辉,喻超
(山东省地质调查院,山东济南250013)
摘要:土壤作为陆地生态系统的重要组成部分,土壤碳储量研究在全球碳循环变化中意义重大。利用山东省多目标区
域地球化学调査(2003年)获得的双层网格化大密度、高精度土壤有机碳(SOC)含量数据,估算了全省0-20cm、0
100cm及0~160cm的土壤碳密度和储量,并対SOC密度和储量的时空变化规律及土壤固碳潜力进行研究。结果表明:
(1)山东省0-20cm、0-100cm和0-160cm土层SOC密度分别为2.22kg/m2、7.64kg/m2、10.09kg/m2,各土层
SOC密度均明显低于全国平均水平(3.19kg/m2、11.64kg/m2和15.34kg/m2);(2)0~20cm表层SOC密度分布总体呈
现为沿海地区低,鲁西北平原、鲁东丘陵中等,鲁中南山区偏高的分布格局;(3)与18年前第二次土壤普査(1985年
数据对比,表层S0C密度从1.43kg/m2升高到2.22kg/m2,全省陆域(15.70万km2)0-20cm表层S0C储量则由
226.41Mt增加至350.65Mt,净增了124.24Mt,SOC密度以0.044kg/(ma2a)的平均速率在土壤中积累,整体表现为
“碳汇”"效应;据估算,尚有505.23ML的固碳潜力。
关鍵词:土壤碳密度;土壤碳储量;时空变化;固碳潜力;山东省
中图分类号:P595;S153.6;X142文献标志码:A文章编号:1000-8527(2017)02-0386-08
Soil Organic Carbon Pool and Temporal Variation Characteristics
in Shandong Province
DAI Jierui, PANG Xugui, DONG Jian, WANG Zenghui, YU Chao
Shandong institute of Geological Survey, Jinan, Shandong 250013, China)
Abstract Soil is an important component of terrestrial ecosystems, research on soil carbon storage in the car
bon cycle and global change is of great significance. Based on the double grid, large density and high accuracy
data obtained from previous multi-purpose regional geochemical survey in 2003, the carbon density and storage
of 0-20 cm, 0-100 cm and 0-160 cm soil in Shandong Provinee were estimated, meanwhile, a systematic
research was conducted on the temporal and spatial variation of soil organic carbon(S0C) density and storage
as well as the potential capacity of carbon sequestration. It was found as follows. (1) The SOC density in 0
20 cm, 0-100 cm, and 0-160 cm soil layers of Shandong Province were 2. 22 kg/m, 7 64 kg/m, and
10.09 k/m, respectively, which were all lower than the national average levels.(2 )The distribution of SOC
density in Shandong Province generally presented that the coastal area is low, the plain area in northwest part
and hilly area in cast part is medium, and the mountain area in middle-south part is high. (3)Compared with
the data obtained from the second soil survey in 1985, SOC density of top soil inereased from 1.43 kg/m to
2. 22 kg/m SOC storage of whole land territory in Shandong, totally 157, 000
square
orrltlers, Iric reased
from 226. 41 Mt to 350 65 Mt, with a net increase of 124. 24 Mt, which indicates that the SOC density is grow
ing at a rate of 0. 044 kg/(m. a), and representing a "carbon sink "effect. According to preliminary estimate
there is another 505. 23 Mt carbon sequestration potential
收稿日期:2016-07-12;改回日期:2016-12-29;责任编辑:楼亚儿。
基金项目:山东省国土资源大调査项日“山东省东部地区农业生态地球化学调査”(2006709),“山东省中南部地区农业生态地球
化学调奁"(201184);国土资源部和山东省合作项目“山东省黄河下游流域生态地球化学调奁”(1212010310306)。
作者简介:代杰瑞,男,高级工程师,1977年出生,地球化学专业,主要从事生态地球化学调查评价和环境地质研究。
Email:djr1978(@126.com
万方数据