[1]王永强,吕雯,马晓梅,等. 宁南带状柠条林地根系及土壤水分养分分布特征[J].西北林学院学报,2023,38(1):42-49.[doi:10.3969/j.issn.1001-7461.2023.01.06]
　WANG Yong-qiang,LV Wen,MA Xiao-mei,et al. Distribution Characteristics of Root,Soil Moisture and Nutrients in Caragana korshinskii Forest Strip Land in Southern Ningxia[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2023,38(1):42-49.[doi:10.3969/j.issn.1001-7461.2023.01.06]
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 宁南带状柠条林地根系及土壤水分养分分布特征()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第38卷
期数:
2023年第1期
页码:
42-49
栏目:
出版日期:
2023-01-31

文章信息/Info

Title:
 Distribution Characteristics of Root,Soil Moisture and Nutrients in Caragana korshinskii Forest Strip Land in Southern Ningxia
文章编号:
1001-7461(2023)01-0042-08
作者:
 王永强1; 吕雯2; 马晓梅1; 王雁超1; 王维宝3; 董立国4; 杨兴成1; 咸福平1; 汪星1*
 （1.宁夏大学 农学院，宁夏 银川 750021；2.宁夏大学 生态环境学院，宁夏 银川 750021；3.彭阳县王洼水土保持试验站，宁夏 彭阳 756500；4.宁夏农林科学院 荒漠化治理研究所，宁夏 银川 750021）
Author(s):
 WANG Yong-qiang1; LV Wen2; MA Xiao-mei1; WANG Yan-chao1; WANG Wei-bao3; DONG Li-guo4; YANG Xing-cheng1; XIAN Fu-ping1; WANG Xing1*
 （1.School of Agricultural,Ningxia University,Yinchuan 750021,Ningxia,China; 2.School of Ecological Environment,Ningxia University,Ningxia 750021,Yinchuan,China; 3.Soil and Water Conservation Station of Wangwa,Pengyang 756000,Ningxia,China; 4.Institute of Desertification Control,Ningxia Academy of Agriculture and Forestry Sciences,Yinchuan 750021,Ningxia,China）
关键词:
 ; 黄土丘陵区; 柠条人工林; 植物根系; 土壤水分; 土壤养分
Keywords:
 ; Loess hilly regions;  Caragana korshinskii plantation;  plant root;  soil water;  soil nutrient
分类号:
S793.3
DOI:
10.3969/j.issn.1001-7461.2023.01.06
文献标志码:
A
摘要:
 为探究宁夏南部黄土丘陵区柠条人工林地根系、土壤水分、土壤N、P养分特征，采用野外调查与室内分析相结合的方法，对宁南黄土丘陵区人工种植20 a的柠条林地0~1 000 cm土壤中根系垂直分布、土壤水分、土壤N、P含量（质量分数，下同）变化进行分析。结果表明：1）柠条林地0~1 000 cm土壤水分消耗量大，土壤储水量较旱作农田减少919.84 mm，平均每年较旱作农田耗水增加45.99 mm，为柠条林地深层土壤干化的直接原因；2）柠条林地根系主要集中在0~80 cm土层，该层根系（表面积密度）占0~1 000 cm根系总量的62.4%；3）柠条林地土壤N、P养分分布规律与根系分布规律一致，即表层多深层少，0~200 cm土层内全N含量平均值为0.53 g·kg-1，是0~1 000 cm土壤全N含量平均值1.86倍，全P含量平均值达0.52 g·kg-1，与0~1 000 cm土层全P含量平均值近似。研究结果对于深入了解半干旱黄土区柠条人工林地根系、水分与养分关系及可持续经营具有积极意义。
Abstract:
 To explore the characteristics of the distribution of roots,soil water and soil nutrients (N and P),20-year-old Caragana korshinskii plantations were used as the research object in the Loess hilly regions of southern Ningxia.Field sampling and laboratory analysis methods were applied to analyze the vertical distribution of roots,soil water and the contents of soil N and P in 0-1 000 cm deep range.The results showed that 1) the 0-1 000 cm deep soil of 20-year-old C.korshinskii plantation had high soil water consumption and the soil water storage was 919.84 mm less than that in the dry farmland.The average annual water consumption was 45.99 mm higher than that in the dry farmland,which directly caused deep dried soil layers in C.korshinskii plantations.2) The roots were mainly concentrated in 0-80 cm soil layers,accounted for 62.4% of total root biomass in 0-1 000 cm depth.3) The distribution of soil N and P for C.korshinskii woodland was consistent with roots distribution.The average total N content in 0-200 cm soil layers was 0.53 g·kg-1,which was 1.86 times of the average total N content in 0-1 000 cm layers.The average total P content was 0.52 g·kg-1,which was close to the average total P content in 0-1 000 cm layers.This study has positive effects on better understanding the relationship between roots,water and nutrients and provides sustainable management strategies for artificial C.korshinskii plantations in semi-arid Loess regions.

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备注/Memo

备注/Memo:
 收稿日期：2021-12-05修回日期：2022-04-07
基金项目：宁夏自然科学基金（2022AAC05019，2021AAC03042）；国家自然科学基金（32060301）。
第一作者：王永强。研究方向：水土保持与荒漠化防治。E-mail:964970344@qq.com
*通信作者：汪星，硕士生导师，副教授。研究方向：水土资源高效利用。E-mail:wangxing@nwsuaf.edu.cn
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