摘要
选取江苏省太仓市和昆山市作为研究区域,结合当前土地利用方式和历史土壤图资料,通过室内分析确定土地利用方式的变化区域,并设置典型的调查样点,通过野外踏勘确定土地利用方式改变对土壤类型的潜在影响。结果表明:近40年来,太仓和昆山的主要土地利用变化方式是水改旱(即由水田转变为水浇地、旱地、园地、林地和草地等),这一变化分别占据了两市土地利用方式变化的98.92%和98.15%。这种显著的土地利用变化对土壤类型产生了明显影响,导致土壤性质发生改变,包括水稻土的犁底层逐渐减少,甚至消失,使其失去了典型的水稻土特征。研究区内土壤类型变化规则的确定主要由土壤质地和人为土地改造方向所影响。值得注意的是,水改旱后如继续旱作,土壤类型可能会由水稻土转为其他类型土壤(如潮土等),但这需要进一步的研究来验证其效果。
In this study,Taicang and Kunshan cities of Jiangsu Province were taken as the study areas,by integrating current land use types with historical soil map data,indoor analysis used to identify the regions experienced obvious changes in land use types.Additionally,field typical survey points were established through reconnaissance to assess the latent impacts of the conversion from paddy fields to other agricultural fields on soil types.The results showed that over the past four decades,the predominant land use change in Taicang and Kunshan was paddy fields changed into other agricultural fields(such as water-irrigated fields,dryland,orchards,forests and grasslands),accounting for 98.92%and 98.15%of the land use changes in each city,respectively.These substantial shifts in land use types significantly influenced soil types,leading to alterations in soil properties,including the gradual reduction and even disappearance of the plow-pan in paddy soils.The determination of soil type variations within two study areas was primarily influenced by soil texture and the direction of human-induced land transformations.It is worth noting that further research is required to validate the potential evolution of soil types(for example from paddy soil to fluvo-aquic soil)after paddy fields changed into other agricultural fields for a certain time.
作者
赵治东
孙龙辉
赵明松
刘峰
徐胜祥
李德成
ZHAO Zhidong;SUN Longhui;ZHAO Mingsong;LIU Feng;XU Shengxiang;LI Decheng(Key Laboratory of Soil and Sustainable Agriculture,Chinese Academy of Sciences,Nanjing 211135,China;School of Spatial Information and Surveying and Mapping Engineering,Anhui University of Science and Technology,Huainan,Anhui 232001,China;Key Laboratory of Aviation-Aerospace-Ground Cooperative Monitoring and Early Warning of Coal Mining-induced Disasters of Anhui Higher Education Institutes,Huainan,Anhui 232001,China;Coal Industry Engineering Research Center of Collaborative Monitoring of Mining Area’s Environment and Disasters,Huainan,Anhui 232001,China;University of Chinese Academy of Sciences,Beijing 100049,China)
出处
《土壤》
CAS
CSCD
北大核心
2024年第4期897-905,共9页
Soils
基金
国家自然科学基金面上项目(42071072)
三普调查的土壤类型图数字制图与更新方法研究项目(ISSASIP2202)资助。
关键词
土地利用变化
水改旱
土壤类型
土壤调查
Land use type change
Paddy field changed into other agricultural land
Soil type
Soil survey
作者简介
赵治东(1998-),男,四川宜宾人,硕士研究生,主要从事数字土壤制图和土壤分类研究。E-mail:846248418@qq.com;通讯作者:刘峰(fliu@issas.ac.cn)。
