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[1]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):1-13.[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(02):1-13.[doi:10.19675/j.cnki.1006-687x.2020.03051]
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不同坡位和经营模式对黄果柑坡地果园土壤养分的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
27卷
期数:
2021年02期
页码:
1-13
栏目:
出版日期:
2021-04-25

文章信息/Info

Title:
The effect of different slope positions and management modes on soil nutrients in slope huangguogan orchard*
作者:
刘银12 何露露12 强薇12 杨兵1 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 HE Lulu1 2 QIANG Wei1 2 YANG Bing1 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:
经营模式坡位有机质土壤养分影响因素
Keywords:
management model slope position organic matter soil nutrients driving factors
DOI:
10.19675/j.cnki.1006-687x.2020.03051
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和一定程度的氮、磷面源污染。为了解经营模式与坡位是否如何影响果园的土壤养分,选择大渡河流域2类典型经营模式(散户和集体经营)下的黄果柑坡地果园作为研究对象,比较不同坡位间(下坡、中坡、上坡)的土壤养分的差异,并探讨土壤有机质(SOM)、可溶性有机碳(DOC)、可溶性有机氮(DON)及全氮(TN)、全磷(TP)、土壤铵态氮(NH4+-N)和硝态氮(NO3--N)与细根生物量、土壤持水性能等的关系。结果显示:与下坡位相比,中上坡位的土壤养分(有机质、全氮、DON、DOC)降低,表明下坡位出现土壤养分的聚集现象;与散户经营的坡地果园相比,集体经营的坡地果园中每土层TN、DON、NH4+-N、NO3--N分别增加28%、17%、85%、72%,而有机质、DOC含量分别降低4%、3%;全磷在两类经营模式的坡地果园间差异不大,每土层均值均为0.49 g/kg。不同经营模式和坡位间土壤养分的差异性与不同经营模式和地形位置下的细根、土壤容重及涵水能力的差异化有关。总之,不合理的经营模式可能加剧土壤侵蚀,导致土壤物理性质退化,这可能是造成坡地黄果柑果园土壤养分下降的重要原因,这些结果对于指导坡地种植时控制水土流失带来的土壤养分流失和氮、磷面源污染有一定的理论与实践意义。
Abstract:
Th e slope orchard, which is distributes at the Dry Valley of the Dadu River, has been a common land-use type. Large-scale cultivation for orchards in slope land has resulted in serious soil erosion and a certain degree of nitrogen and phosphorus non-point source pollution. However, whether and how the management model and the slope position will affect soil nutrients is largely unknown . In the two Huangguogan slope orchards with typical management model ( individual orchard-managed and collective orchard-managed)of the Dadu River, the differences in soil nutrients among three slope positions (the bottom, middle, upper slope position)were compared, and the correlations between soil organic matter ( SOM), dissolved organic carbon ( DOC), dissolved organic nitrogen ( DON), total nitrogen (TN), total phosphorus (TP), soil ammonium nitrogen ( NH4+-N), soil nitrate nitrogen (NO3--N) and fine root biomass, soil water holding capability were examined. the findings showed that compared with the bottom slope position, the mass fraction of the soil nutrients (SOM、TN、DON、DOC) in the middle and upper slope positions decreased, indicating that there is a tendency of soil nutrient accumulation in the bottom slope position; compared with the individual orchard-managed orchards, the mass fraction of the TN 、DON、NH4+- N and NO3--N in each soil layer of collective orchard-managed orchard increased by 28% 、17%、85% and 72% , respectively, but the SOM and DOC decreased by 4% and 3%, respectively ; the TP have little difference between management modes , and the average content of each soil layer is 0.49 g/kg. The differences in soil nutrient content between different management modes and slope positions were mainly influenced by the soil fine roots, soil bulk density and water holding capacity under different management modes and terrain locations. In conclusion, soil erosion induced by a unreasonable management mode lead to degradation of soil physical properties and this could be the main factors for the decline of nutrient content in these slope orchard. These results can provide a theoretical and practical guide for controlling soil nutrient loss and nitrogen and phosphorus non-point source pollution caused by soil and water loss in newly established slope orchard.

相似文献/References:

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 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(02):246.[doi:10.19675/j.cnki.1006-687x.2018.05029]
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备注/Memo

备注/Memo:
收稿日期 Received: 2020-03-26 接受日期 Accepted: 2020-05-21
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 Supported by the National Key Research and Development Program of China (2017YFC0505104), the National Natural Science Foundation of China (31770658) , the Key Research Program of the Chinese Academy of Sciences (KFZD-SW-427) and Sichuan Science and Technology Program (2018SZDZX0030)
**通讯作者 Corresponding author (E-mail: pangxy@cib.ac.cn)
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更新日期/Last Update: 2020-05-22