华南农业大学学报
華南農業大學學報
화남농업대학학보
JOURNAL OF SOUTH CHINA AGRICULTURAL UNIVERSITY
2010年
1期
17-21
,共5页
刘序%胡月明%李华兴%徐剑波%席荣宾%缑武龙
劉序%鬍月明%李華興%徐劍波%席榮賓%緱武龍
류서%호월명%리화흥%서검파%석영빈%구무룡
DEM%赤红壤%土壤全氮%地形特征%广东省
DEM%赤紅壤%土壤全氮%地形特徵%廣東省
DEM%적홍양%토양전담%지형특정%광동성
DEM%lateritic red soil%soil nutrients%terrain characteristics%Guangdong Province
以土壤类型图、地形图、全氮图等资料为数据源,利用ArcGIS 9.2建立广东省赤红壤数字高程模型(DEM),提取海拔高度、坡度、坡向和地势起伏度,探索大尺度下全氮分布与地形特征的关系.研究表明:全氮含量与海拔高度、坡度和地势起伏度呈负相关关系,并随着海拔高度、坡度和地势起伏度的上升分布面积迅速下降,在坡向上,则主要分布于平坦区域和东南坡.
以土壤類型圖、地形圖、全氮圖等資料為數據源,利用ArcGIS 9.2建立廣東省赤紅壤數字高程模型(DEM),提取海拔高度、坡度、坡嚮和地勢起伏度,探索大呎度下全氮分佈與地形特徵的關繫.研究錶明:全氮含量與海拔高度、坡度和地勢起伏度呈負相關關繫,併隨著海拔高度、坡度和地勢起伏度的上升分佈麵積迅速下降,在坡嚮上,則主要分佈于平坦區域和東南坡.
이토양류형도、지형도、전담도등자료위수거원,이용ArcGIS 9.2건립광동성적홍양수자고정모형(DEM),제취해발고도、파도、파향화지세기복도,탐색대척도하전담분포여지형특정적관계.연구표명:전담함량여해발고도、파도화지세기복도정부상관관계,병수착해발고도、파도화지세기복도적상승분포면적신속하강,재파향상,칙주요분포우평탄구역화동남파.
DEM of lateritic red soil in Guangdong Province was set up by using ArcGIS 9.2 based on soil type map,topographic map,and total nitrogen map data.Altitude,slope,aspect and undulating terrain were extracted to explore the correlation in large-scale between topographic factors and total nitrogen content of lateritic red soil in Guangdong Province.The results show that total nitrogen content of lateritic red soil had high correlation with the distribution area of the indices of height,slope and relief amplitude.The distribution area of total nitrogen content in soil was decreased as those terrain indices increased.As for aspect,the distribution area of soil total nitrogen content was mainly in flat region and south-east slope.