文献类型：期刊文献

中文题名：生物炭基土壤改良剂对锑矿区土壤质量及亮叶桦生长的影响

英文题名：The Amelioration of Biochar Soil Amendment on Antimony Mining Soil and Growth of Betula luminifera

作者：李璞君[1,2] 唐丽[1] 赵博[2] 邸东柳[2] 陈岩[2] 肖江[2] 陈光才[2]

第一作者：李璞君

机构：[1]中南林业科技大学林学院,湖南长沙410000;[2]中国林业科学研究院亚热带林业研究所,浙江杭州311400

年份：2024

卷号：33

期号：12

起止页码：1953-1963

中文期刊名：生态环境学报

外文期刊名：Ecology and Environmental Sciences

收录：CSTPCD;;国家哲学社会科学学术期刊数据库;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：国家重点研发计划项目(2020YFC1807704)。

语种：中文

中文关键词：土壤改良;植株生长;生物炭基土壤改良剂;重金属;锑矿区;亮叶桦;植物修复

外文关键词：soil improvement;plant growth;biochar soil amendment;heavy metal;antimony(Sb)mining areas;Betula luminifera;phytoremediat

分类号：X53

摘要：土壤基质改良对改善矿区土壤质量、提升植被建成效率具有重要作用。采用贵州晴隆锑矿区污染土壤为供试土壤,并以非矿区土壤为对照,添加生物炭基土壤改良剂(BBOF,施用量0%(T1)、1%(T2)、3%(T3))研究BBOF对锑矿区污染土壤物理、化学和生物特性的改良及其对亮叶桦(Betula luminifera H.J.P.Winkl.)生长、生理和Sb、As浓度、富集与转运的影响。结果表明:添加BBOF显著改善土壤质量,其中T2处理显著增加了土壤含水率(26.00%)、孔隙度(32.42%)(p<0.05)。T3处理下,土壤pH值、有机碳质量分数分别显著提高了7.74%、31.78%(p<0.05),土壤TN、TP、TK和AN、AK、AP质量分数分别提高了38.15%、74.78%、1.41%和65.02%、336.20%、98.38%,土壤脲酶、酸性磷酸酶和β-葡萄糖苷酶活性显著增加了92.53%、41.86%和175.33%(p<0.05),亮叶桦株高、基径及地上、地下生物量分别显著增加了26.37%、39.66%、142.00%和118.62%(p<0.05),而亮叶桦根、茎、叶中锑的浓度分别下降了73.00%、25.73%和4.48%。总体而言,BBOF提高了锑矿区土壤有机碳、矿质养分质量分数以及参与碳氮磷循环土壤酶的活性;促进了亮叶桦在锑矿区污染土壤中的生长。施用1%的BBOF能有效恢复锑矿区污染土的土壤功能,促进亮叶桦在锑矿区土壤的生长,为后续锑矿区土壤改良以及植被修复提供实践参考。
Soil amendment plays a pivotal role in improving soil quality and vegetation construction in mining areas.Biochar soil amendment(BBOF)selected as soil amendments was applied at 0%(T1),1%(T2),and 3%(T3)in soil severely contaminated by antimony(Sb)and arsenic(As),to examine the amelioration of BBOF on degraded soil from Sb mining sites,and their effect on seedling growth of Betula luminifera H.J.P.W in a pot experiment last for six months.The results demonstrated that BBOF significantly improved soil quality;in particular,the T2 treatment significantly enhanced soil water content(26.00%)and porosity(32.42%)(p<0.05).Compared to the T1 treatment,the T3 treatment exhibited a notable increase in soil pH and organic matter content by 7.74%and 31.78%,respectively(p<0.05).Soil nitrogen(N),phosphorus(P),potassium(K),and alkaline nitrogen(AN),alkaline potassium(AK),and alkaline phosphorus(AP),were increased by 38.15%,74.78%,1.41%,65.02%,336.20%,and 98.38%,respectively.The activities of urease,phosphatase,andβ-glucoside significantly increased by 92.53%,41.86%,and 175.33%,respectively,under the T3 treatment(p<0.05).The T3 treatment resulted in significant increases of 26.37%,39.66%,142.00%,and 118.62%in plant height,base diameter,and aboveground and underground biomass,respectively(p<0.05).The T2 treatment led to a reduction in bioavailable and total Sb and As in the soil.The accumulation of Sb in roots,stems,and leaves was found to decrease by 73.00%,25.73%,and 4.48%,respectively,under T3 treatment.Taken together,the BBOF demonstrated positive impacts on the physicochemical properties of the soil,increased the activity of soil enzymes,reduced the biological availability of Sb and As,and facilitated the growth of Betula luminifera in antimony mining areas.The application rate of 1%was observed to have the most pronounced effect.The results provide a valuable reference for future soil improvement and vegetation restoration in S mining.