摘要
基于河北省石家庄市郊农田的土壤分布状况,以土属为评价单元研究区域内的土壤质量状况,选取影响土壤质量的地形坡度、成土母质类型、有效土层厚度和质地等主要分类指标,采用经验法和模糊隶属函数,定量地分析了该地区不同土属类型土壤的质量指数(IFI)。结果显示,石家庄市不同土属的土壤质量差异比较明显:①洪冲积砂壤质潮褐土、洪冲积壤质潮褐土、洪冲积砂砾质潮褐土、黄土质石灰性褐土、洪冲积壤质石灰性褐土、灰砂质潮土、夹黏灰性砂质潮土、灰性壤质潮土、灰性砂壤质潮土、灰性夹黏壤质潮土、灰性夹黏砂壤质潮土、氯化物盐化潮土、硫酸盐盐化潮土、砾砂质冲积土、砂质冲积土的IFI值分别为0.868、0.884、0.847、0.702、0.809、0.776、0.816、0.862、0.846、0.902、0.843、0.783、0.794、0.830、0.831,土壤质量较好,适宜耕种;其中,灰砂质潮土、氯化物盐化潮土、砾砂质冲积土、砂质冲积土由于黏粒含量均<10%,因此耕种前需人工改良。②灰黏壤质草甸沼泽土、固定草甸风沙土、半固定草甸风沙土的IFI值分别为0.822、0.783、0.626,土壤质量较好,但是易受到人为破坏,不应农用,建议种草、种树等生态性保护利用;其余的麻砂质褐土性土、麻砂质褐土、麻砂质淋溶褐土、硅质石灰性褐土、灰泥质石灰性褐土、麻砂质中性粗骨土的IFI值分别为0.438、0.474、0.492、0.427、0.413、0.360,土壤质量相对较差,且均处于山地、丘陵地带,本质上不宜农用。通过对证《河北土地资源》,上述土属类型的IFI情况与实际土壤质量状况有相关性。本研究以土属为评价单元进行评价能够比较准确地反映该区土壤质量的实际情况,方法可供借鉴。
In this study, soil genus was taken as the evaluation unit in the soil quality evaluation in Shijiazhuang City, Hebei Province. Soil properties selected included slope gradient, parent material, effective soil depth and soil texture, et al. Empirical method or fuzzy membership function was used to quantitatively analyze soil integrated fertility index （IFI）. The results indicated soil quality of different soil genera was variable in the studied area, 1） The IFI of pluvialalluvial sandy-loamy meadow cinnamon soils, pluvial-alluvial loamy meadow cinnamon soils, pluvial-alluvial gritty meadow cinnamon soils, Ioessial-calcarious cinnamon soils, pluvial-alluvial loamy calcarious cinnamon soils, calcareous-sandy fluvo-aquic soils, clay-calcareous sandy fluvo-aquic soils, calcareous-loamy fluvo-aquic soils, calcareous sandy-loamy fluvo-aquic soils, clay-calcareous loamy fluvo-aquic soils, clay-calcareous sandy-loamy fluvoaquic soils,chloride salinized fluvo-aquic soils,sulfate salinized fluvo-aquic soils,gritty-alluvial soils and sandy-alluvial soils were 0. 868,0. 884,0,847,0. 702,0. 809,0. 776,0. 816,0. 862,0. 846,0. 902,0. 843,0. 783,0. 794,0. 830 and 0.831, respectively, which indicated high quality. Calcareous-sandy fluvo-aquic soils, chloride salinized fluvo-aquic soils,alluvial soils were low in clay content, these soils need to be improved before cultivation; 2）The IFI of meadow aeolian sandy soils, immovable meadow bog soils and demi-immovable meadow bog soils were 0. 822,0. 783 and 0. 626, respectively. These soils were all sensitive to erosion and should be protected. The IFI of granite-weathered sandy-weakly developed cinnamon soils, granite-weathered sandy-cinnamon soils, granite-weathered sandy-leached cinnamon soils, siliceous-calcarious cinnamon soils, calcareous argillaceous-calcarious cinnamon soils and graniteweathered sandy soils are 0. 438,0. 474, 0. 492, 0. 427, 0. 413 and 0. 360, respectively. These soils located in mountainous or hilly region and they were not suitable for cultivation. Based on comparison with ＂Land Resource of Hebei＂,the IFI of different soil genus accurately reflected soil quality of this area, and this method has the potential to be generalized.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2009年第6期61-67,共7页
Journal of China Agricultural University
基金
国家"十一五"科技支撑课题(2006BAD15B01
2006BAD02A14)
国家自然科学基金资助项目(70673104)
