|Table of Contents|

Comprehensive Evaluate of Soil Fertility of Different Forests in MU Us Sandy Land

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2019年15
Page:
91-98
Research Field:
Publishing date:

Info

Title:
Comprehensive Evaluate of Soil Fertility of Different Forests in MU Us Sandy Land
Author(s):
LIN Shuai1; YAN Wei2; JIA Xuewen2; YAN Haixia3; LIU Zehao4; BAI Shulan1
(1.Forestry College,Inner Mongolia Agricultural University,Huhhot,Inner Mongolia 010019；2.Natural Forest Resources Protection Administration,Erdos City Forestry Bureau,Ordos,Inner Mongolia 017010;3.Huhhot Environmental Monitoring Center,Huhhot,Inner Mongolia 010030;4.City Afforestation Total Field,Erdos City Forestry Bureau,Ordos,Inner Mongolia 017010)
Keywords:
MU Us sandy land; membership function; principal component analysis; comprehensive evaluation of soil fertility; Nemerow index method
PACS:
-
DOI:
10.11937/bfyy.20184305
Abstract:
Soil physical and chemical properties are important indicators for assessing soil fertility in forest；soil fertility differences affect vegetation distribution,succession trajectory,etc.To explore the quality of soil fertility in order to provide reference for the selection and scientific management of forest species in MU Us sandy land in Ordos region.Five kinds of forests,including Hedysarum mongolicum,Caragana tibetica,Sabina vulgaris,Caragana korshinskii,Salix linearistipularis in Ordos region were chosen to measure and analyze soil pH,organic matter,total nitrogen,total phosphorus,total potassium,ammonium nitrogen,available phosphorus and available potassium in soil.The data were standardized based on the membership function method,and the membership value of each index was determined,the weight of each index was determined by principal component analysis.Combined with the membership value and weight value,the comprehensive evaluation method was applied to evaluate the comprehensive fertility of soil under different forest types.The Nemero index method was used to inspect a conclusion for the comprehensive evaluation method.The results showed that,1) The soil pH were ranged from 7.31-10.46,and mean value of 8.35.2) In different study areas,the contribution rates of the seven factors to the comprehensive soil fertility ranking:total potassium (0.177)>available phosphorus (0.148)>ammonium nitrogen (0.138)>available potassium (0.134)>organic matter (0.127)>total phosphorus (0.099)>total nitrogen (0.057).3) The comprehensive evaluation method and the Nemerow index method to determine of soil comprehensive fertility quality were consistent trend,as followed:Hedysarum mongolicum plantation＞Caragana tibetica plantation＞Sabina vulgaris plantation＞Caragana korshinskii plantation＞Salix linearistipularis plantation.The soil in the study area belonged to alkaline soil.The high total potassium content in the soil had the highest contribution rate to the soil fertility of forest land.The soil had lower total nitrogen and total phosphorus,which was the main limiting factor of soil fertility in forest land.Hedysarum mongolicum plantation had higher soil fertility under the forest,and was better than other forests.

References:

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Last Update: 2019-08-16