土地利用方式变化对农业土壤有机碳空间分布的影响

发布时间：2018-07-09 18:20

本文选题：土壤有机碳 + 地统计　；参考：《浙江农业学报》2017年05期

【摘要】：将地统计学和地理信息系统相结合,研究浙江省杭州市富阳区1979—2006年0~20 cm土层土壤有机碳的时间和空间变异特征。结果表明,1979—2006年富阳区土壤平均有机碳含量从17.3 g·kg~(-1)增长到18.5 g·kg~(-1)。根据半方差模型分析结果,富阳区1979年和2006年土壤有机碳的分布在空间自相关上均表现为中等强度。不同土地利用类型土壤有机碳含量依次为菜地林地水田旱地未利用地园地。研究区内土壤有机碳发生变化的主要驱动力是土地利用方式及其相应的管理措施差异。城镇日常生活产生的生活废水与废弃物,以及工业特别是造纸产生的工业废水的处置方式,农业生产中不同种植方式下有机肥和化肥的使用情况,均对研究区土壤有机碳水平的高低和空间异质性有直接影响。研究结果可为研究区土壤有机碳管理提供科学依据。
[Abstract]:Based on geostatistics and geographic information system (GIS), the temporal and spatial variability of soil organic carbon (SOC) in 20 cm soil layer in Fuyang District, Hangzhou City, Zhejiang Province from 1979 to 2006 was studied. The results showed that the average soil organic carbon content increased from 17.3 g kg ~ (-1) to 18.5 g kg ~ (-1) from 1979 to 2006 in Fuyang area. According to the results of semi-variance model, the distribution of soil organic carbon in Fuyang area in 1979 and 2006 showed moderate intensity in spatial autocorrelation. The content of soil organic carbon in different land use types was vegetable land, woodland, paddy field, dry land and unutilized garden land. The main driving force of soil organic carbon change in the study area was the difference of land use patterns and corresponding management measures. Treatment of municipal wastewater and waste from daily life in cities and towns, as well as treatment of industrial wastewater, especially industrial wastewater from papermaking, and the use of organic fertilizers and fertilizers under different cultivation patterns in agricultural production, The soil organic carbon level and spatial heterogeneity in the study area were directly affected. The results can provide scientific basis for soil organic carbon management in the study area.
【作者单位】：浙江大学环境与资源学院;浙江省农业科学院农村发展研究所;
【基金】：国家自然科学基金项目(41401595)
【分类号】：S153.6

【相似文献】