摘要
耕地质量各构成要素的特点和相互间的影响,决定了耕地质量的外在表现。从构成耕地质量的自然因素和环境因素入手,研究具体区域耕地质量构成要素间的相互影响关系,以便针对耕地质量的特点,选择适宜的利用方式。本文以吉林省前郭县为研究区域,基于农用地分等成果和地球化学评估成果,分析该研究区内耕地质量构成要素的特点和相互影响关系。结果表明:在本研究区内耕地利用等与土壤肥力等呈正相关趋势,说明耕地生产能力随土壤肥力的增高而增大;耕地利用等与土壤环境健康等呈负相关趋势,说明研究区内的耕地利用方式对耕地的土壤环境状况造成了负面影响;土壤肥力等与土壤环境健康等呈负相关趋势,说明人们改善土壤肥力的方式,对土壤环境健康造成了负面影响。尽管目前研究区内耕地的土壤重金属含量尚未超标,但土壤环境健康等的变化趋势向我们发出了警示,应注意合理施用化肥农药,避免耕地土壤环境的恶化。
The characteristics and interactions of cultivated land quality components determine the external manifestation of cultivated land quality.This paper starts with the natural and environmental factors which compose cultivated land quality and studies the interactions of cultivated land quality components in a certain region so as to select the feasible utilization styles referring to the characteristics of cultivated land quality.This paper takes Qianguo county of Jilin Province as the research region and analyzes the characteristics and interactions of cultivated land quality components within the region based on achievements of agricultural land classification and geochemical assessment.Three points can be indicated from the results： the cultivated land utilization grades and the soil fertility are positively correlated in research region,which shows that the cultivated land productivity enhances with the increase of the soil fertility;there is negative correlations between cultivated land utilization grades and soil environmental health grades,showing that the cultivated land utilization styles in the region have negative influences on the situation of soil environment;soil fertility and soil environmental health are negatively correlated,which indicates that the methods of improving soil fertility by the local people have negative effects on the environmental health of soil.Although the heavy metal contents have not exceeded the standard,the changing trend of soil environmental health grades alarms us of rational application of chemical fertilizers and pesticides so as to avoid the continuative deterioration of soil environment.
出处
《土壤通报》
CAS
CSCD
北大核心
2012年第2期269-273,共5页
Chinese Journal of Soil Science
基金
全国农用地分等定级估价(2010)
东北经济区土地质量地球化学评估与土地分等定级成果整合研究(1210810806)资助
关键词
耕地质量
耕地生产能力
土壤肥力
土壤环境健康
农用地分等
地球化学评估
Cultural land quality
Cultural land productivity
Soil fertility
Soil environmental health
Agricultural land classification
Geochemical evaluation
