基于熵权TOPSIS法综合评价不同树种的混交方式对土壤物理性质的影响
Comprehensive Evaluation of Effects of Mixed Patterns of Different Tree Species on Soil Physical Properties Based on Entropy Weight TOPSIS Method
尚天歌 1于楠楠 1薛利忠 1李佳鑫 2焦欣磊 1朱云佳 1郭扬 1尹喆 3胡燕1
作者信息
- 1. 乌兰察布市农林科学研究所,内蒙古 乌兰察布 012000
- 2. 乌兰察布市林业和草原局,内蒙古 乌兰察布 012000
- 3. 内蒙古环境监测总站乌兰察布分站,内蒙古 乌兰察布 012000
- 折叠
摘要
为了解乌兰察布市地区常见树种混交造林模式对土壤质量的影响,筛选当地有利于树木长势和土壤改良的树种配置及混交模式,提升当地的生态效益和经济效益.以山杏(Armeniaca sibirica(L.)Lam)、拧条锦鸡儿(Caragana korshinskii Kom.)和沙棘(Hippophae rhamnoides L.)纯林作为对照,3 种苗木两两组合,以行间、行内、块状混交模式种植,对比不同混交林长势并利用熵权TOPSIS法综合评价土壤物理性质差异.山杏与拧条锦鸡儿的块状混交能提高树木成活率,促进株高、地径等生长指标发育,同时能减小土壤容重,增加土壤持水量和孔隙度;熵权TOPSIS法综合评价表明,山杏与拧条锦鸡儿的块状混交在改善土壤物理性质方面优于其他混交林;相关性试验表明土壤容重与最大持水量、最小持水量、毛管持水量和总孔隙间呈极显著负相关.苗木生长势、土壤物理性质以及土壤持水性能间可相互作用,选择合适的苗木配置和栽培技术能有效地改善土壤质量,促进苗木生长.
Abstract
To learn the effects of mixed tree species on soil quality in Ulanqab,screen out the beneficial project of tree growth and soil improvement and improve ecological benefits and economic benefits,Arme-niaca sibirica(L.)Lam,Caragana korshinskii Kom.and Hippophae rhamnoides L.pure stands were se-lected as controls in the combination of three seedlings planting in pairs by inter-row mixing,intra-row mixing and block mixing in this study,to study the difference of tree growth and evaluate the differences in soil physical properties on entropy weight TOPSIS method.The results showed that block mixing of A.caragana and C.korshinskii could improve the survival rate of trees,increase plant height,ground diam-eter and other growth indexes,reduce soil bulk density,increase soil moisture capacity and porosity.The comprehensive evaluation of entropy weight TOPSIS method showed that the block mixing of A.caragana and C.korshinskii was better than other mixed tree species in improving soil physical properties;the corre-lation tests showed that soil bulk density was negatively correlated with maximum moisture capacity,mini-mum moisture capacity,capillary moisture capacity and total porosity.In all,seedling growth,soil physical properties and soil moisture capacity could interact with each other,selecting appropriate seedling configu-ration and cultivation technology could effectively improve soil quality and promote the growth of seedlings.
关键词
混交林/混交模式/土壤物理性质/熵权TOPSIS法/Pearson相关性分析Key words
mixed forest/mixed pattern/soil physical property/entropy weight TOPSIS method/Pear-son correlation analysis引用本文复制引用
基金项目
乌兰察布市科技计划项目(2021JC204)
出版年
2024
NETL
NSTL
万方数据