摘要
为了反映第二次土壤普查以来辽东山区坡耕地基础地力状况,分析在不同坡度级下各地力等级坡耕地利用特点,选择了辽东典型山区县桓仁县作为研究区域,在Arcgis10和Excel软件的支持下,运用DELPHI法、AHP法和FE法,选取耕层养分性状、耕层理化性状、土壤管理和立地条件等4大类13个评价指标,对桓仁县坡耕地基础地力进行了定量化评价。结果显示：桓仁县坡耕地基础地力共分5个等级,主要分布在三等（21.49%）、四等（50.73%）和五等地（20.39%）,一等（0.81%）和二等地（6.58%）分布较少;且坡耕地主要分布在坡度5°以上,其中一等级主要分布在2°-8°（0.81%）,二等和三等地主要分布在5°-8°（13.17%）,四等和五等地主要分布在15°以上（58.78%）。该研究不仅扩展了耕地地力评价成果的应用,同时为坡耕地相关研究提供有益参考。
Huanren County was chosen as a typical area in the eastern mountainous areas of Liaoning and the slope cultivated land fundamental fertility characteristics were evaluated under different slop grade levels in order to clarify the situation of slope cultivated land fundamental fertility.With the support of ArcGIS 10 and Excel software,Methods of DELPHI,analytic hierarchy process（AHP） and fuzzy evaluation（FE） were used and 13 evaluation indicators in 4 types were selected,including nutrients in arable layer,physical and chemical characteristics in arable layer,soil management and site conditions.The results showed that slope cultivated land fundamental fertility was classified into five grades,and mainly were the 3rd,4th and 5th grades,accounted for 21.49%,50.73% and 20.39% respectively,while the 1st and 2nd grades were less,accounted for 0.81% and 6.58% respectively.The distribution of slope cultivated land was mainly beyond 5°,the 1st grade was mainly in 2°-8°（accounted for 0.81%）,the 2nd and 3rd grades were mainly in 2°-8°（accounted for 13.17%）,and the 4th and 5th grades were mainly above 15°（accounted for 58.78%）.The assessment method established here could be extended into other similar regions in fertility evaluation of cultivated land,and could provide beneficial references on research in slope cultivated land.
出处
《土壤》
CAS
CSCD
北大核心
2012年第3期429-435,共7页
Soils
基金
国家自然科学基金项目(40871142)
农业部耕地地力调查与评价项目资助
关键词
坡耕地
基础地力评价
辽东山区
GIS
Slope cultivated land
Fundamental land fertility evaluation
Eastern mountainous areas of Liaoning
GIS
作者简介
裴久渤（1984-），男，辽宁抚顺人，博士研究生，主要从事土壤肥力与土地利用信息技术研究。E-mai：peijiubo@163．com
通讯作者（j-kwang@163．com）
