[1]张志春,潘根兴,张晋京,等.下拉秀剖面胡敏素组分特征[J].水土保持研究,2013,20(03):295-298,304.
　ZHANG Zhi-chun,PAN Gen-xin,ZHANG Jin-jing,et al.Features on the Humin Composition in Xialaxiu Profile[J].Research of Soil and Water Conservation,2013,20(03):295-298,304.
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下拉秀剖面胡敏素组分特征

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 20 期数: 2013年03期 页码: 295-298,304 栏目: 出版日期: 2013-06-28
Title:
Features on the Humin Composition in Xialaxiu Profile
作者:
张志春1,2, 潘根兴1, 张晋京3, 辛延俊2, 陶世银2, 袁延得2, 王敏2
1. 南京农业大学 农业资源与生态环境研究所, 南京 210095;
2. 青海省雷电灾害防御中心, 西宁 810001;
3. 吉林农业大学 资源与环境学院, 长春 130118
Author(s):
ZHANG Zhi-chun1,2, PAN Gen-xin1, ZHANG Jin-jing3, Xin Yan-jun2, TAO Shi-yin2, YUAN Yan-de2, WANG Min2
1. Institute of Resources, Ecosystem and Environment of Agriculture, Nanjing Agricultural University, Nanjing 210095, China;
2. Qinghai Provincial Center for Lightning Disaster Prevention, Xi’ning 810001, China;
3. College of Resources and Environment, Jilin Agricultural University, Changchun 130118, China
关键词:
三江源; 沉积剖面; 胡敏素组成; 光学性质
Keywords:
source area of three river; profile of deposition; humin composition; optical property
分类号:
S153.6+22
摘要:
采用腐殖质组成修改法和Pallo修改法相结合的方法对下拉秀剖面的胡敏素（HM）进行了分组研究，把铁结合胡敏素（HMi）、黏粒结合胡敏素（HMc）和不溶性胡敏素（HMr）定义为胡敏素组成，同时把HMi/HMc和（HMi+HMc）/HM作为胡敏素的表征指标，研究了不同层位的胡敏素组成。结果表明：不同层位胡敏素组分含量、HMi/HMc、（HMi+HMc）/HM、E4/E6、△lgK各不相同；多数层位HMr的含量高，HMr的最高值和最低值分别出现在剖面的上下两端；（HMi+HMc）/HM在（0.20±0.05）~（0.60±0.03）的范围内波动，多数层位可溶性胡敏素组分低于不溶性组分；HMi/HMc在（5.42±0.34~0.46±0.03）的范围内波动，且幅度大，有5个层位 > 1；除O层外，剖面各层位的E4/E6总是表现为HMc > HMi，但△lgK的变化情形较为复杂，并不总是表现为HMc > HMi；现代生草层HMi、HMc的结构较其他层位简单。
Abstract:
HM was divided into iron-linked humin(HMi),clay-linked humin(HMc) and insoluble humin residue(HMr) by humus composition modification method & modified Pallo method, which was defined as humin composition. HMi/HMc and (HMi+HMc)/HM were regarded as the index of humin composition. Results showed that contents of humin fractions, HMi/HMc, (HMi+HMc)/HM, E4/E6 and △lgK in different layers were different; the HMr contents in majority of layers aret high, HMr to the maximum and minimum values appeared in the profiles of the upper and lower ends; (HMi+HMc)/ HM ranged from 0.20±0.05 to 0.60±0.03. soluble HM component was lower than the insoluble fractions in most layers; HMi/HMc fluctuations were within (5.42±0.34)~(0.46±0.03) and those parameters in 5 layers were greater than 1; in addition to the O layer, each layer of the E4/E6 always behaved as HMc > HMi, but △lgK situation was more complex, not always behaved as HMc > Hmi; The structure of the HMi & HMc in grass-growing layer was simple compared to other layers.

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备注/Memo

收稿日期:2013-01-06;改回日期:2013-03-18。
基金项目:国家科技支撑计划子课题（2008BAD95B13-1）
作者简介:张志春(1964-),男,甘肃通渭人,高级工程师,主要从事土壤碳循环与气候变化方面的工作。E-mail:zczhang2006@yahoo.com.cn
通讯作者:潘根兴(1958-),男,浙江浦江人,博士,教授,主要从事全球变化与土壤碳循环研究。E-mail:pangenxing@yahoo.com.cn

更新日期/Last Update: 1900-01-01