CAJ | 학술논문

以云南泥石流频发的小江流域为研究区域，根据该流域的微地貌特点，将流域划分为物源区、流通区、堆积区；为全面了解土壤肥力的分区异质性特征，结合各分区土地利用类型，分析其土壤物理结构、养分特征。结果表明：不同分区土壤颗粒组成差异性不大，土壤质地以粗粒和砾石为主，土壤沙石化明显，流通区土壤物理结构相对较好；小江流域山地土壤含水量总体受季节影响较大，而不同分区的土壤含水量则受垂直地带性因素影响，表现为流通区＞物源区＞堆积区；不同分区土壤养分含量受人类活动、土壤类型、土壤颗粒组成等因素影响，差异性特征复杂，总体含量丰富。
이운남니석류빈발적소강류역위연구구역，근거해류역적미지모특점，장류역화분위물원구、류통구、퇴적구；위전면료해토양비력적분구이질성특정，결합각분구토지이용류형，분석기토양물리결구、양분특정。결과표명：불동분구토양과립조성차이성불대，토양질지이조립화력석위주，토양사석화명현，류통구토양물리결구상대교호；소강류역산지토양함수량총체수계절영향교대，이불동분구적토양함수량칙수수직지대성인소영향，표현위류통구＞물원구＞퇴적구；불동분구토양양분함량수인류활동、토양류형、토양과립조성등인소영향，차이성특정복잡，총체함량봉부。
Taking Xiaojiang River watershed as study area where mud-rock flow happens frequently,it was divided into the source area,circulation area and stacked area according to the micro-geomorphic features of the watershed.In order to understand comprehensively the heterogeneity characteristics of soil nutrients in different areas,the physical structure and nutrient properties of the soil were analyzed by integrating with land use types. The results indicated that there were little differences in the composition of soil particles among different partitions, the soil texture was mainly composed of coarse and grave particles,showing prominent desertification.The physical structure of the soil in the circulation area was comparatively better.The soil water content in Xiaojiang River watershed was generally affected by seasonal climate,whereas the soil water content in different partitions was influenced by vertical zonal factors,which was ordered as circulation area >source area >stacked area.The soil nutrition status in Xiaojiang River watershed was generally good with complex heterogeneity,which was integratively influenced by human activities,soil types and soil particle composition.