|本期目录/Table of Contents|

[1]刘银 杨兵 祁凯斌 杨婷惠 庞学勇**.黄果柑果园不同坡位土壤水文生态功能及其影响因子[J].应用与环境生物学报,2020,26(04):1-14.[doi:10.19675/j.cnki.1006-687x.2019.07016]
 LIU Yin,YANG Bing,et al.Soil ecohydrological functions and the influencing factors on different slope positions of huangguogan orchard *[J].Chinese Journal of Applied & Environmental Biology,2020,26(04):1-14.[doi:10.19675/j.cnki.1006-687x.2019.07016]
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黄果柑果园不同坡位土壤水文生态功能及其影响因子()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
26卷
期数:
2020年04期
页码:
1-14
栏目:
研究论文
出版日期:
2020-08-25

文章信息/Info

Title:
Soil ecohydrological functions and the influencing factors on different slope positions of huangguogan orchard *
作者:
刘银12 杨兵1 祁凯斌12 杨婷惠12 庞学勇1**
1中国科学院山地生态恢复与生物资源利用重点实验室,生态恢复与生物多样性保育四川省重点实验室,中国科学院成都生物研究所 成都 610041
2.中国科学院大学 北京 100049
Author(s):
LIU Yin1 2 YANG Bing1 QI Kaibin1 2 YANG Tinghui 1 2 & PANG Xueyong1**
1 CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, and Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences , Chengdu 610041, China
2 University of Chinese Academy of Sciences, Beijing 100049, China
关键词:
坡位土壤颗粒组成孔隙度容重持水能力影响因素
Keywords:
s lope position soil particle composition porosity bulk density water-holding capacity driving factors
DOI:
10.19675/j.cnki.1006-687x.2019.07016
摘要:
坡地果园是大渡河干暖河谷两岸一种常见的土地利用方式。大面积坡地果园垦殖导致了严重的水土流失。但是,坡位是否以及如何影响果园土壤的水源涵养能力仍需进一步研究。本研究选择大渡河流域典型的2类黄果柑坡地果园为研究对象,比较了不同坡位间(下坡、中坡、上坡)的土壤物理性质与持水能力的差异,并探讨了土壤颗粒组成、孔隙度、容重以及细根生物量与土壤水源涵养能力的关系。结果显示:与下坡位相比,中坡位和上坡位粘粉粒质量分数分别降低4%-30%和20%-42%,而0.1-2mm砂粒的质量分数分别增加7%-10%和7%-16%,表明上坡位的土壤有粗骨化的趋势;中坡位和上坡位土壤容重别增加7%-10%和11%-16%,土壤总孔隙度分别减少3%-12%和19%-25%,最大持水量分别减少2%-12%和4%-13%。在同一坡位,土壤容重随着土层的加深而增加,而土壤总孔隙度和最大持水量呈相反趋势。进一步分析发现,坡位通过影响土壤容重和总孔隙度是决定坡地果园表层土壤持水量的主要因素,而细根生物量对总持水能力也有一定的影响。这些结果对于指导坡地种植时控制坡度和坡地的水土流失有一定的理论与实践意义。
Abstract:
The slope orchard, which distributes in the Dry Valley of the Dadu River, has been a common land-use type. The l arge-scale cultivation for orchards in slope land has resulted in serious soil erosion. However, whether and how the slope position will affect water-holding capacity is largely unknown . In the two typical Huangguogan slope orchards of the Dadu River, the differences in soil physical properties and water-holding capacity among three slope positions (the bottom, middle, upper slope position)were compared, and the correlations between soil particle composition, porosity, bulk density, fine root biomass and soil water conservation capacity were examined. The findings showed that compared with the bottom slope position, the mass fraction of the clay and silt in the middle and upper slope positions decreased by 4%-30% and 20%-42%, respectively; while the mass fraction of the 0.1-2 mm sand increased by 7%-10% and 11%-16%, respectively, indicating that the soil in the upper slope position had an ossification trend; The soil bulk density increased by 7%-10% and 11%-16%, respectively. The total soil porosity decreased by 3%- 12% and 19%-25%, respectively. The maximum water-holding capacity decreased by 2%-12% and 4%-13%, respectively. Moreover, under the same slope position, soil bulk density increased with increasing soil depth, the opposite held true for soil total porosity and maximum water-holding capacity. Further analysis showed that soil bulk density and total porosity were the main factors affecting soil water-holding capacity in topsoil of slope orchards, and the fine root biomass also partly explained the variations of total water-holding capacity. These results can provide a theoretical and practical guide for controlling soil and water loss in newly established slope orchard.

相似文献/References:

[1]樊月,陈志为,潘云龙,等.林龄和坡位对杉桐混交林化学计量特征的影响[J].应用与环境生物学报,2019,25(02):246.[doi:10.19675/j.cnki.1006-687x.2018.05029]
 FAN Yue,CHEN Zhiwei,et al.Effects of stand, age, and slope position on the stoichiometric characteristics of the Cunninghamia lanceolata-Aleurites montana mixed forest[J].Chinese Journal of Applied & Environmental Biology,2019,25(04):246.[doi:10.19675/j.cnki.1006-687x.2018.05029]
[2]赵晓雪 饶良懿** 申震洲.砒砂岩区不同地形位置土壤物理性质分异特征[J].应用与环境生物学报,2020,26(06):1.[doi:10.19675/j.cnki.1006-687x.2019.12026]
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[3]刘银 何露露 强薇 杨兵 庞学勇**.不同坡位和经营模式对黄果柑坡地果园土壤养分的影响[J].应用与环境生物学报,2021,27(02):1.[doi:10.19675/j.cnki.1006-687x.2020.03051]
 LIU Yin,HE Lulu,et al.The effect of different slope positions and management modes on soil nutrients in slope huangguogan orchard*[J].Chinese Journal of Applied & Environmental Biology,2021,27(04):1.[doi:10.19675/j.cnki.1006-687x.2020.03051]

备注/Memo

备注/Memo:
收稿日期 Received: 2019-07-10 接受日期 Accepted: 2019-12-24
国家重点研发计划项目(2017YFC0505104)、国家自然科学基金(31770658)、中科院重点部署项目(KFZD-SW-427)和四川省科技计划(2018SZDZX0030)资助
通讯作者 Corresponding author (E-mail: pangxy@cib.ac.cn)
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更新日期/Last Update: 2020-01-14