| 摘要: |
| 基于土壤样点调查数据，估算了梅州市林地土壤全氮、氮密度和氮储量，分析了土壤全氮含量
的空间分布格局。结果表明：梅州市各区（县）土壤全氮含量在 0.61~1.04 g/kg 之间，均值为 0.78 g/kg，
土壤肥力Ⅳ级，变异系数为 54.81%，属中等变异程度。梅州市各区（县）土壤氮密度大小在 8.75~14.92
kg/m2 的范围，土壤平均氮密度约为 11.13 kg/m2
，梅州市林地土壤总氮储量约为 1 311.24 万 t，各区（县）
林地土壤氮储量依次为丰顺县 > 大埔县 > 五华县 > 梅县区 > 兴宁市 > 平远县 > 蕉岭县 > 梅江区。梅州市
林地土壤全氮含量总体呈现东高西低的分布格局，且随着土壤深度的增加逐渐降低。 |
| 关键词: 梅州市 土壤全氮 氮储量 |
| DOI： |
| 分类号: |
| 基金项目:广东省科技计划项目（2019-07） |
|
| Soil Nitrogen Storage and Spatial Distribution Characteristics of Forest Land in Meizhou City |
|
zhuhangyong1, wangjiulian1, zhaozhiming1, Dengzhiwen2, dengzewei1, zhangzhongrui1
|
|
1.Guangdong Academy of Foresty;2.广东省林业科学研究院
|
| Abstract: |
| Based on the soil sample point survey data, the total nitrogen, nitrogen density, and nitrogen
storage of woodland soil in Meizhou city were estimated, and the spatial distribution pattern of soil total nitrogen
content was analyzed. The results showed that the soil total nitrogen content in all districts (counties) of Meizhou
city ranged from 0.61 to 1.04 g/kg, with a mean value of 0.78 g/kg and soil fertility class IV, with a coefficient of
variation of 54.81%, which is a medium degree of variation. The size of soil N density in all districts (counties) of
Meizhou city ranged from 8.75 to 14.92 kg/m2
, with an average soil N density of about 11.13 kg/m2
. The total soil
N storage capacity of woodland in Meizhou city was about 13 112 400 t. The soil N storage capacity of woodland
in all districts (counties) was in the order of Fengshun county > Dabu Po county > Wuhua county > Meixian
district > Xingning city > Pingyuan county > Jiaoling county > Meijiang district. The soil total nitrogen content
of forest land in Meizhou city generally showed a distribution pattern of high in the east and low in the west, and
gradually decreased with the increase of soil depth. |
| Key words: Meizhou city total soil nitrogen nitrogen storage |
