西安理工大学学报2016，Vol.32Issue(1)：18-22,5.DOI:10.19322/j.cnki.issn.1006-4710.2016.01.004
丹江鹦鹉沟小流域土壤全磷空间分布及流失特征
The spatial distribution and loss of soil total phosphorus in Yingwugou Watershed of Danjiang River
摘要
Abstract
Phosphorus is the maj or limiting element for plant growth and water body eutrophica-tion.This paper selects Yingwugou Watershed in the Danjiang water resource area of the middle route engineering of South-to-North water diversion proj ect served as the research region.Soil samples are collected and soil phosphorus loss conditions in different types of land use are moni-tored.The classical statistics combined with the geostatistics can be used to study the spatial het-erogeneity of soil total phosphorus (STP)in the whole watershed,and the nutrient loss behav-iors are analyzed in combination of STP contents with loss concentration under the different types of land use.The research results indicate that the average value of STP contents in 0~10 cm (A1),10~20 cm (A2),20~40 cm (A3)and 40~60 cm (A4)in Yingwugou Watershed are 0.54 g/kg,0.49 g/kg,0.48 g/kg and 0.51 g/kg,respectively.ANOVA tests indicate that STP con-tent of different depth are significant (P<0.05).Kriging interpolation value shows that STP spatial distribution in the whole watershed appears to be patchy,and STP distribution patch area become from big to small with an increase in soil depth gradually.There exists the significant difference (P<0.05)under the different types of land uses such as tea grove land,grassland and cultivates land.Among the cultivated land,total phosphorus loss concentration in peanut land, maize land,turnip land,bean land and pepper land is higher than that in grassland,but available phosphorus loss concentration in grassland is higher than that in maize,bean and peanut lands.关键词
鹦鹉沟流域/土壤全磷/空间分布/养分流失Key words
Yingwugou Watershed/soil total phosphorus/spatial distribution/nutrient loss分类
农业科技引用本文复制引用
张铁钢,李占斌,刘晓君,李鹏,徐国策,成玉婷..丹江鹦鹉沟小流域土壤全磷空间分布及流失特征[J].西安理工大学学报,2016,32(1):18-22,5.基金项目
国家自然科学基金重点资助项目(41330858) （41330858）
国家自然科学基金资助项目(41471226,41271290) （41471226,41271290）
陕西省自然科学基础研究计划资助项目(2014JM2-4036) （2014JM2-4036）
丹汉江水源区清洁小流域建设关键技术资助项目(2015slkj-06) （2015slkj-06）
