|Table of Contents|

Effects of Different Land Use Types on the Contents of Nitrogen,Phosphorus and Heavy Metals in Soil

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年04
Page:
112-117
Research Field:
Publishing date:

Info

Title:
Effects of Different Land Use Types on the Contents of Nitrogen,Phosphorus and Heavy Metals in Soil
Author(s):
ZHENG Jie1; WANG Lei1; 2; YU Lifei1; 2; 3; LU Xinggao1; WANG Fei1
(1.College of Life Sciences,Guizhou University,Guiyang,Guizhou 550025;2.Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering,Guiyang,Guizhou 550025;3.Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region,Ministry of Education,Guiyang,Guizhou 550025;)
Keywords:
land use; soil nitrogen; soil phosphorus; heavy metal; Caohai basin; Guizhou
PACS:
-
DOI:
10.11937/bfyy.20182566
Abstract:
Take the Caohai basin of Weining in Guizhou Province as the research object,the effects of different land use types on the contents of total nitrigen,total phosphorus and heavy metals in the soil and the correlation during soil nitrigen,phosphorus and heavy metal were studied by field sampling and laboratory analysis.The results showed that the total nitrogen and total phosphorus contents in the soil were as shown in flat cultivated land>urban land>slope cropland>grassland>forest land.The flat cultivated land and urban land were significantly higher than grassland and forest land(P<0.05),and the slope cropland was significantly higher than the forest land(P<0.05).The flat cultivated land,urban land and slope cropland were not significantly different,grassland and forest land were not significantly different (P>0.05).Cd content was expressed as urban land(3.44 mg?kg-1)>flat cultivated land(3.16 mg?kg-1)>slope cropland(2.72 mg?kg-1)>grassland(1.81 mg?kg-1)>forest land(1.56 mg?kg-1).Zn content was expressed as urban land (210.10 mg?kg-1)>flat cultivated land(203.67 mg?kg-1)>slope cropland(198.86 mg?kg-1)>forest land (125.53 mg?kg-1)>grassland (110.49 mg?kg-1).The contents of Cd and Zn were not significantly different during urban land,flat cultivated land and slope cropland (P>0.05),and were significantly higher than that of grassland and forest land (P<0.05),and the difference between grassland and forest land was not significant(P>0.05).There was a significant or extremely significant positive correlation between TN,TP,Cd and Zn.To sum up,different land use types affect the contents of total nitrogen total phosphorus and soil heavy metals in the soil.The urban land,flat cultivated land and slope cropland had higher content than the grassland and forest land.At the same time,soil nutrients had certain homology with soil heavy metal input.

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Last Update: 2019-03-25