[1]赵天雪,臧飞*,李娜,等. 祁连山青海云杉林内穿透雨中微量元素变化特征[J].西北林学院学报,2021,36(5):36-41.[doi:10.3969/j.issn.1001-7461.2021.05.05]
　ZHAO Tian-xue,ZANG Fei*,LI Na,et al. Distribution Characteristics of Trace Elements in Throughfall of Picea crassifolia Forest in the Qilian Mountains[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(5):36-41.[doi:10.3969/j.issn.1001-7461.2021.05.05]
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 祁连山青海云杉林内穿透雨中微量元素变化特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第5期
页码:
36-41
栏目:
出版日期:
2021-09-30

文章信息/Info

Title:
 Distribution Characteristics of Trace Elements in Throughfall of Picea crassifolia Forest in the Qilian Mountains
文章编号:
1001-7461(2021)05-0036-06
作者:
 赵天雪1; 臧飞2*; 李娜2; 杨建红2; 杨晓高2; 赵传燕2
 （1.甘肃祁连山国家级自然保护区管护中心 寺大隆自然保护站，甘肃 张掖 734000；2.兰州大学 草地农业科技学院，甘肃 兰州 730020）
Author(s):
 ZHAO Tian-xue1; ZANG Fei2*; LI Na2; YANG Jian-hong2; YANG Xiao-gao2; ZHAO Chuan-yan2
 (1.Sidalong Nature Conservation Station of Gansu Qilian Mountains National Nature Reserve Protection Center,Zhangye 734000,Gansu,China; 2.College of Pastoral Agriculture Science and Technology,Lanzhou University,Lanzhou 730020,Gansu,China)
关键词:
 ; 祁连山区; 湿沉降; 铜; 镉; 青海云杉
Keywords:
 ; the Qilian Mountains;  wet deposition;  Cu;  Cd;  Picea crassifolia
分类号:
S791.18
DOI:
10.3969/j.issn.1001-7461.2021.05.05
文献标志码:
A
摘要:
 大气沉降是微量元素进入陆地生态系统的主要途径，但森林生态系统穿透雨中微量元素的研究还很缺乏。以甘肃祁连山国家级自然保护区的天涝池流域为研究区，以2018年夏季13次降雨事件样品中微量元素为研究对象，分析了祁连山典型森林生态系统穿透雨中Cu和Cd的变化特征及其影响因素。结果表明，青海云杉林内穿透雨量（1.0~24.8 mm）大于林外降雨量（0.1~23.2 mm），林冠对降雨呈现负截留现象，雨水的pH整体呈中性或弱酸性。青海云杉林内穿透雨中Cu（5.97~12.05 μg·L-1）和Cd（0.12~0.78 μg·L-1）的浓度均高于林外降雨（Cu：3.28~11.37 μg·L-1，Cd：0.05~1.03 μg·L-1），且雨水中Cu浓度要远高于Cd浓度。雨水中Cu和Cd的浓度与降雨量呈负相关关系，说明Cu和Cd受降雨量影响显著，但还与其他因素有关，如风速、降雨强度等。本研究能够为该流域森林生态系统服务功能评估提供重要的借鉴。
Abstract:
 The atmospheric precipitation is the main way for trace elements entering the land ecosystem.Few studies have been reported on throughfall trace elements in the forest ecosystem.In this study,Tianlaochi Catchment of Gansu Qilian Mountains National Nature Reserve was set as the study area,the trace elements in rainfall samples collected from 13 rainfall events in the summer of 2018 were used as research objects to examine the variation characteristics and affecting factors of two trace elements,Cu and Cd in the throughfalls occurring in typical forest ecosystem in the Qilian Mountains.The results showed that the amount of throughfall (1.0-24.8 mm) within the Picea crassifolia forest was higher than the amount (0.1-23.2 mm) of rainfall outside the forest.The canopy had negative interception effect on the rainfall.The pH of rainfall was neutral or weak acid.The concentrations of Cu and Cd in the throughfall (Cu:5.97-12.05 μg·L-1,Cd:0.12-0.78 μg·L-1 ) of P.crassifolia forest were higher than those (Cu:3.28-11.37 μg·L-1,Cd：0.05-1.03 μg·L-1) of the rainfall outside the forest,and the concentrations of Cu in the throughfall and rainwater were much higher than Cd.The concentrations of Cu and Cd in rainwater had negative correlation with rainfall,indicating that Cu and Cd were significantly affected by rainfall,but also related to other factors,such as wind speed,rainfall intensity,etc.

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备注/Memo

备注/Memo:
 收稿日期：2020-10-26修回日期：2020-11-13
基金项目：国家自然科学基金（31901130）；中国博士后科学基金（2020M673532）；甘肃省自然科学基金（20JR5RA277，20JR5RE645）；兰州大学中央高校基本科研业务费专项资金（lzujbky-2021-sp13）。
作者简介：赵天雪。研究方向：森林生态学。E-mail：329394443@qq.com
*通信作者：臧飞，博士，副教授。研究方向：微量元素生物地球化学。E-mail：zangf15@lzu.edu.cn
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