CAJ | 학술논문

利用土壤肥力化学实测分析手段及GIS空间分析方法探讨农林交错区特殊区位条件下耕地及林地土壤肥力空间分异特征，判定不同土地利用方式下的土壤肥力变化规律及特征，为土地管理及决策者提供相应参考。通过对穆陵市林地和农地各80个采样点两种土地利用类型下土壤样本有机质、全氮、有效磷、有效钾进行化学实测，对其在高程梯度和坡度梯度分异情况进行分析，利用球状模型进行克吕格模型构建进行空间推演。结果表明，在坡度梯度上，除有效磷以外，有机质、有效钾、全氮在12°和25°附近均出现高值；在高程梯度上表现在中等海拔400~500 m上出现高值高度较高和较低海拔高度上土壤肥力值有所降低；克吕格差值模型进一步说明林地的土壤肥力在区位条件相同的前提下均高于耕地的土壤肥力，并呈现一定的空间分异性。农林交错区的坡地耕作导致土壤化学特征及基本土壤肥力水平下降。
이용토양비력화학실측분석수단급GIS공간분석방법탐토농림교착구특수구위조건하경지급임지토양비력공간분이특정，판정불동토지이용방식하적토양비력변화규률급특정，위토지관리급결책자제공상응삼고。통과대목릉시임지화농지각80개채양점량충토지이용류형하토양양본유궤질、전담、유효린、유효갑진행화학실측，대기재고정제도화파도제도분이정황진행분석，이용구상모형진행극려격모형구건진행공간추연。결과표명，재파도제도상，제유효린이외，유궤질、유효갑、전담재12°화25°부근균출현고치；재고정제도상표현재중등해발400~500 m상출현고치고도교고화교저해발고도상토양비력치유소강저；극려격차치모형진일보설명임지적토양비력재구위조건상동적전제하균고우경지적토양비력，병정현일정적공간분이성。농림교착구적파지경작도치토양화학특정급기본토양비력수평하강。
In order to find out the variation and characteristics of soil fertility under different land use patterns, this paper studied the soil fertility spatial variation features of farm-forest ecotone by the spacial analysis of GIS and the chemical analysis of soil fertility, to provide the appropriate references for land management and making decision. The soil organic matter, total nitrogen, available phosphorus and available potassium of 80 sampling points were tested, and the elevation gradient and slope gradient variation of soil fertility were analyzed, the Kriging mode was used for space inference. The results showed that the contents of organic matter and available potassium were highest at 12°and 25°, concerning slope gradient; while the contents of organic matter, available potassium and available phosphorus peak at 400-500 m, with higher middle parts and lower both sides;the Kriging interpolation model further explained that soil fertility of forest land was greater than that of cultivated land under the same conditions, presenting certain spatial variation features, it could be seen that slope farmland in the overlapping area of agriculture and forestry could result in the losses of chemical elements and soil fertility.