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[1]胡婉榕 胥超 熊德成 吴福忠 倪祥银 岳 楷**.中亚热带森林两种林型对4种盐基离子随降水分配动态的影响[J].应用与环境生物学报,2022,28(06):1-10.[doi:10.19675/j.cnki.1006-687x.2021.07040]
 HU Wanrong,XU Chao,XIONG Decheng,et al.Effects of two forest types on the dynamics of four base cations along with rainfall partitioning in middle subtropical forests[J].Chinese Journal of Applied & Environmental Biology,2022,28(06):1-10.[doi:10.19675/j.cnki.1006-687x.2021.07040]
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中亚热带森林两种林型对4种盐基离子随降水分配动态的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
28卷
期数:
2022年06期
页码:
1-10
栏目:
研究论文
出版日期:
2022-12-25

文章信息/Info

Title:
Effects of two forest types on the dynamics of four base cations along with rainfall partitioning in middle subtropical forests
作者:
胡婉榕1 胥超12 熊德成12 吴福忠12 倪祥银12 岳 楷12**
1 福建师范大学地理科学学院 福州 350007
2 福建师范大学湿润亚热带山地生态国家重点实验室培育基地福建三明森林生态系统与全球变化研究站 福州 350007
Author(s):
HU Wanrong1 XU Chao1 2 XIONG Decheng1 2 WU Fuzhong1 2 NI Xiangyin1 2 & YUE Kai 1 2**
1 School of Geographical Science, Fujian Normal University, Fuzhou 350007, China
2 Cultivation Base of State Key Laboratory of Humid Subtropical Mountain Ecology Sanming Forest Ecosystem and Global Change Observation and Research Station of Fujian Province, Fuzhou 350007, China
关键词:
盐基离子穿透雨树干茎流米槠次生林杉木人工林
Keywords:
base cation throughfall stemflow Castanopsis carlesii secondary forest Cunninghamia lanceolata plantation
DOI:
10.19675/j.cnki.1006-687x.2021.07040
摘要:
盐基离子随穿透雨和树干茎流的迁移成为森林元素输入的重要组成部分。在迁移过程中,冠层淋溶、树干冲刷等改变了盐基离子含量,而不同林型的林冠特征、树皮性质等存在差异,因此盐基离子含量在不同林型中可能存在差异。对米槠次生林和杉木人工林穿透雨、树干茎流进行了为期4年的监测,对比研究了4种盐基离子(K+、Ca2+、Na+、Mg2+)浓度和输入量的动态特征。结果显示:(1)米槠次生林树干茎流Ca2+、Mg2+浓度显著高于杉木人工林而K+浓度显著低于杉木人工林;穿透雨除Na+浓度外均为米槠次生林显著高于杉木人工林。穿透雨和树干茎流Na+浓度林型差异不显著。(2)两种林型盐基离子季节动态变化基本一致,在雨季旱季各有一个峰值,雨季浓度普遍低于旱季。米槠次生林盐基离子浓度稳定性普遍高于杉木人工林。(3)分析盐基离子浓度与降雨强度的关系发现:Ca2+、K+、Mg2+浓度随雨量级的增加而降低,Na+浓度随雨量级的增加而增加。(4)观测期间米槠次生林穿透雨累计输入Ca2+、K+、Mg2+和Na+总量分别为47.97、35.17、7.15和12.94 kg/hm2,树干茎流累计输入Ca2+、K+、Mg2+和Na+总量分别为11.38、6.21、1.54 kg/hm2和3.00 kg/hm2;杉木人工林穿透雨累计输入Ca2+、K+、Mg2+和Na+总量分别为47.24、26.63、6.43和11.55 kg/hm2,树干茎流累计输入Ca2+、K+、Mg2+和Na+总量分别为4.11、1.20、0.50和0.83 kg/hm2。米槠次生林的林内雨盐基离子输入量大于杉木人工林。总体而言米槠次生林比杉木人工林有更高的养分输入,能更好地维持生态系统养分的供应;研究结果有助于进一步认识森林物质随水文过程的流动,可为人工林经营管理提供一定科学基础数据。(图6 表1 参36)
Abstract:
The fluxes of base cations along with throughfall and stemflow is an important part of elements input in forests, but how this process may vary among different forest types that have varying canopy characteristics remains elusive. The concentration dynamics and inputs of K+, Ca2+, Na+, and Mg 2+ along with throughfall and stemflow in Castanopsis carlesii secondary forest and Cunninghamia lanceolata plantation were assessed based on the data from a 4-year field observation study. Results showed that: (1) The concentrations of Ca2+ and Mg 2+ in stemflow were significantly higher in C. carlesii secondary forest than in C. lanceolata plantation, but K+ concentration showed a opposite trend. The concentrations of K +, Ca2+, and Mg2+ of throughfall in C. carlesii secondary forest were significantly higher than those in C. lanceolata plantation. (2) Similar patterns for the seasonal dynamic changes of these base cations along with throughfall or stemflow were observed, with a peak value observed in both wet and dry season s. The concentrations of these base cations were generally lower in wet season than in dry season. The concentration stabilities of these base cations of throughfall and stemflow in C. carlesii secondary forest were generally higher than those in C. lanceolata plantation. (3) Rainfall intensity significantly affected the concentrations of these base cations. The concentrations of Ca2+, K+, and Mg2+ decreased with the increase of rainfall intensity, while Na + increased with the increase of rainfall intensity. (4) In C. carlesii secondary forest, the cumulative inputs of Ca 2+, K+, Mg2+, and Na+ through throughfall were 47.97, 35.17, 7.15, and 12.94 kg/hm 2, respectively, and through stemflow were 11.38, 6.21, 1.54, and 3.00 kg/hm 2, respectively. The cumulative inputs of these base cations in C. lanceolata plantation via throughfall were 47.24, 26.63 , 6.43 , and 11.55 kg/hm 2, respectively, and through stemflow were 4.11, 1.20, 0.50 , and 0.83 kg/hm 2, respectively. The base cations inputs through throughfall and stemflow were higher in C. carlesii secondary forest than in C. lanceolata plantation. These results showed that total inputs of base cations in C. carlesii secondary forest were greater than those in C. lanceolata plantation, indicating a great potential to maintain ecosystem nutrient availability in the C. carlesii secondary forest. Our findings would be useful for a better understanding of the fluxes of nutrient along with hydrological process in forests, and for the management of plantation.

相似文献/References:

[1]袁颖红,樊后保,李燕燕,等.模拟氮沉降对土壤酸化和土壤盐基离子含量的影响[J].应用与环境生物学报,2011,17(04):461.[doi:10.3724/SP.J.1145.2011.00461]
 YUAN Yinghong,FAN Houbao,LI Yanyan,et al.Effects of Simulated N Deposition on Soil Acidification and Content of Base Cations[J].Chinese Journal of Applied & Environmental Biology,2011,17(06):461.[doi:10.3724/SP.J.1145.2011.00461]

更新日期/Last Update: 2022-03-16