浙江师范大学学报（自然科学版）
浙江師範大學學報（自然科學版）
절강사범대학학보（자연과학판）
Journal of Zhejiang Normal University(Natural Sciences)
2015年
4期
461-465
,共5页
高婷%孔祥忠%于红梅%束良佐
高婷%孔祥忠%于紅梅%束良佐
고정%공상충%우홍매%속량좌
有机碳%全氮%土地利用%婺江流域%分布特征
有機碳%全氮%土地利用%婺江流域%分佈特徵
유궤탄%전담%토지이용%무강류역%분포특정
soil organic carbon%total nitrogen%land use types%area of Wujiang%vertical distribution charac-teristics
以婺江流域兰溪市烟溪村为研究地区,利用传统统计学方法对油菜地、苗圃地、菜地、黄豆地、棉花地5种土地利用类型下土壤碳氮的垂直分布特征进行比较分析,目的为烟溪村土地资源的合理利用与施肥提供科学依据.结果表明:农田不同种植方式下土壤有机碳、全氮差异显著,0~20 cm表层土壤有机碳含量排序:菜地>苗圃地>油菜地>黄豆地>棉花地,菜地有机碳含量明显大于其他土地利用类型;40~60 cm土层,苗圃地的有机碳累积含量最高,为21.63 g/kg,棉花地累积含量最低,为6.93 g/kg;0~10 cm土层,土壤全氮含量的垂直空间分布表现:菜地>苗圃地>油菜地>棉花地>黄豆地.随着土层的加深,全氮含量逐渐下降, 30 cm土层以下各土地利用类型全氮含量变化不明显.农田5种不同土地利用类型下,有机碳和全氮含量均表现出随土层的深入而降低,0~30 cm土层,有机碳和全氮含量下降明显;30 cm土层以下变化不大.
以婺江流域蘭溪市煙溪村為研究地區,利用傳統統計學方法對油菜地、苗圃地、菜地、黃豆地、棉花地5種土地利用類型下土壤碳氮的垂直分佈特徵進行比較分析,目的為煙溪村土地資源的閤理利用與施肥提供科學依據.結果錶明:農田不同種植方式下土壤有機碳、全氮差異顯著,0~20 cm錶層土壤有機碳含量排序:菜地>苗圃地>油菜地>黃豆地>棉花地,菜地有機碳含量明顯大于其他土地利用類型;40~60 cm土層,苗圃地的有機碳纍積含量最高,為21.63 g/kg,棉花地纍積含量最低,為6.93 g/kg;0~10 cm土層,土壤全氮含量的垂直空間分佈錶現:菜地>苗圃地>油菜地>棉花地>黃豆地.隨著土層的加深,全氮含量逐漸下降, 30 cm土層以下各土地利用類型全氮含量變化不明顯.農田5種不同土地利用類型下,有機碳和全氮含量均錶現齣隨土層的深入而降低,0~30 cm土層,有機碳和全氮含量下降明顯;30 cm土層以下變化不大.
이무강류역란계시연계촌위연구지구,이용전통통계학방법대유채지、묘포지、채지、황두지、면화지5충토지이용류형하토양탄담적수직분포특정진행비교분석,목적위연계촌토지자원적합리이용여시비제공과학의거.결과표명:농전불동충식방식하토양유궤탄、전담차이현저,0~20 cm표층토양유궤탄함량배서:채지>묘포지>유채지>황두지>면화지,채지유궤탄함량명현대우기타토지이용류형;40~60 cm토층,묘포지적유궤탄루적함량최고,위21.63 g/kg,면화지루적함량최저,위6.93 g/kg;0~10 cm토층,토양전담함량적수직공간분포표현:채지>묘포지>유채지>면화지>황두지.수착토층적가심,전담함량축점하강, 30 cm토층이하각토지이용류형전담함량변화불명현.농전5충불동토지이용류형하,유궤탄화전담함량균표현출수토층적심입이강저,0~30 cm토층,유궤탄화전담함량하강명현;30 cm토층이하변화불대.
Based on the field surveys and laboratory analysis , a comparative study was made of the vertical distribution characteristics of soil organic carbon (SOC) and total N(TN) of rapeseed land, nursery land, veg-etable land , soybean land , cotton land in the area of Wujiang of Lanxi city by using conventional statistics to provide a scientific basis for rational use of land resources and fertilization for Yanxi village.The results showed that:the contents of SOC , TN were significantly influenced by land uses , the content of SOC under different land uses in the surface soil (0~20 cm) were as the following orders:vegetable land>seedling nurs-ery land>rapeseed land>soybean land>cotton land.In the soil layer(40~60 cm), the accumulation of or-ganic carbon content of seedling nursery land was 21.63 g/kg, higher than other land use types , the accumu-lation of cotton land was the lowest with 6.93 g/kg.In the soil layer(0~10 cm), the vertical distribution of soil total N content were as follows:vegetable land>seedling nursery land >rapeseed land>cotton land>soy-bean land.Soil organic carbon and total nitrogen content decreased gradually with the increase of soil depth on 5 kinds of land use types.In the soil layer ( 0~30 cm ) , soil organic carbon and total nitrogen content de-creased significantly , soil layer changed little below 30 cm.
