黄土高原半干旱区不同林龄柠条人工林土壤线虫群落特征

doi:10.13292/j.1000-4890.202201.006

生态学杂志 ›› 2022, Vol. 41 ›› Issue (2): 236-245.doi: 10.13292/j.1000-4890.202201.006

黄土高原半干旱区不同林龄柠条人工林土壤线虫群落特征

王楠^1,2,黄菁华^1,3*,霍娜^1,2,耿德洲^1,2,杨盼盼^3,4,张欣玥^1,5,赵世伟^1,2,3

(¹西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室，陕西杨凌 712100； ²西北农林科技大学资源环境学院，陕西杨凌 712100；³中国科学院水利部水土保持研究所，陕西杨凌 712100；⁴中国科学院大学，北京 100049；⁵西北农林科技大学林学院，陕西杨凌 712100)

出版日期:2022-02-10 发布日期:2022-08-10

Characteristics of soil nematode communities in Caragana korshinskii plantations with different stand ages in semi-arid region of Loess Plateau, Northwest China.

WANG Nan^1,2, HUANG Jing-hua^1,3*, HUO Na^1,2, GENG De-zhou^1,2, YANG Pan-pan^3,4, ZHANG Xin-yue^1,5, ZHAO Shi-wei^1,2,3

(¹State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, China; ²College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China; ³Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Yangling 712100, Shaanxi, China; ⁴University of Chinese Academy of Sciences, Beijing 100049, China; ⁵College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China).

Online:2022-02-10 Published:2022-08-10

摘要/Abstract

摘要： 为了解柠条人工林对半干旱地区脆弱生态环境的改善作用，在黄土高原柠条种植的重点区域——宁夏南部山区，选取4个林龄（4、14、24和34年生）的柠条人工林作为对象，调查林中土壤线虫群落的组成、结构与多样性特征，并分析它们与土壤理化性质之间的关系，探明黄土高原半干旱区柠条林植被恢复过程中土壤线虫群落的演变特征及其环境影响因素。结果表明：林龄对土壤线虫数量有显著影响，线虫数量随林龄增加呈先上升后降低的变化趋势，在14年生达到峰值；线虫群落组成和营养类群结构在不同林龄柠条林中呈现较大分异，杂食捕食性线虫比例在14年生达到最高（40.3%），而在24年生植食线虫比例占绝对优势（61.3%），食细菌和食真菌线虫比例分别在4和34年生达到最高；土壤线虫群落生态指数也随着林龄的增加发生改变，其中线虫成熟度指数、瓦斯乐斯卡指数和结构指数均在14年生达到最大，但在24年生，这些生态指数以及线虫多样性指数和均匀度指数均降至最低，表明土壤生物多样性下降，生态系统恢复状况受到影响；在柠条人工林植被恢复过程中，土壤含水量、有机碳、全氮及微生物生物量碳是影响线虫群落特征的主要环境因子，在不同林龄柠条林中它们的变化对线虫数量和群落组成有一定的调控作用，而线虫群落的改变能够有效指示土壤健康与生态系统恢复状况，对综合评价柠条人工林植被的生态环境效应有着重要意义。

关键词: 黄土高原半干旱区, 植被恢复, 柠条人工林, 林龄, 线虫群落

Abstract: To clarify the improvement effect of Caragana korshinskii plantation on fragile eco-environment in semi-arid areas, we selected four C. korshinskii plantations with different ages (4-, 14-, 24-, and 34-yea-old) in the mountainous area of southern Ningxia as the research objects, where was one of the key C. korshinskii planting areas on the Loess Plateau. We investigated the composition, structure, and diversity of soil nematode communities, and analyzed their relationships with soil properties, to explore the evolution of soil nematode community and their environmental influencing factors in the restoration process of C. korshinskii plantation in the semi-arid region of the Loess- Plateau. The results showed that the stand age of C. korshinskii plantation significantly affected soil nematode abundance, which increased first and then decreased with increasing stand age, and peaked in the 14-year-old plantation. The nematode community composition and trophic group structure differed greatly among different stand ages. The percentages of omnivorous-predatory and plant-parasitic nematodes were highest in the 14- and 24-year-old plantations (40.3% and 61.3%), respectively, while that of bacterial and fungal-feeding nematodes reached the maximum in the 4- and 34-year-old plantations, respectively. The ecological indices of soil nematode communities changed with stand age. The maturity index, Wasilewska index, and structure index all reached the maximum in the 14-year-old plantation, while those three ecological indices as well as the Shannon diversity index and Pielou evenness index of nematode community decreased to the lowest in the 24-year-old C. korshinskii plantation, indicatingdecreased soil biodiversity and poor ecosystem restoration. Across the chronosequence of C. korshinskii plantations, soil water content, organic carbon concentration, total nitrogen concentration, and microbial biomass carbon were the main influencing factors driving the changes in the abundance and community composition of soil nematodes. Such changes in soil nematode communities can effectively indicate soil health and ecosystem restoration status, which are of great significance for the comprehensive evaluation of eco-environmental impacts of C. korshinskii plantations.

Key words: semi-arid region of Loess Plateau, vegetation restoration, Caragana korshinskii plantation, stand age, nematode community.

王楠, 黄菁华, 霍娜, 耿德洲, 杨盼盼, 张欣玥, 赵世伟. 黄土高原半干旱区不同林龄柠条人工林土壤线虫群落特征[J]. 生态学杂志, 2022, 41(2): 236-245.

WANG Nan, HUANG Jing-hua, HUO Na, GENG De-zhou, YANG Pan-pan, ZHANG Xin-yue, ZHAO Shi-wei. Characteristics of soil nematode communities in Caragana korshinskii plantations with different stand ages in semi-arid region of Loess Plateau, Northwest China.[J]. Chinese Journal of Ecology, 2022, 41(2): 236-245.

[1]	王思敏, 张红丽, 张恒硕, 左启林, 查同刚. 晋西黄土区典型小流域不同土层土壤容重分布特征及其影响因素 [J]. 生态学杂志, 2024, 43(3): 609-615.
[2]	杨宬君, 张鑫, 马孟平, 胡一帆, 洪宗文, 熊仕臣, 刘宣, 游成铭. 华西雨屏区不同林龄柳杉人工林表层土壤磷组分特征 [J]. 生态学杂志, 2024, 43(3): 623-632.
[3]	程刘涛, 郭文, 王玉哲, 吴晓生, 严强, 胡亚林, 刘先. 中亚热带不同林龄木荷养分限制及重吸收特征 [J]. 生态学杂志, 2024, 43(2): 407-414.
[4]	胡亚伟, 施政乐, 刘畅, 徐勤涛, 张建军. 晋西黄土区刺槐林密度对林下植物多样性及土壤理化性质的影响 [J]. 生态学杂志, 2023, 42(9): 2072-2080.
[5]	李晨笛, 杨小波, 李东海, 史建康, 赵俊福, 李龙, 陈琳, 张培春, 田璐嘉. 海南中部山区天然林群落结构与多样性变化 [J]. 生态学杂志, 2023, 42(3): 513-523.
[6]	席丽, 李思瑶, 夏晓莹, 陈玉雯, 王杰, 马小龙, 米尔扎提·柯尼加里木, 阿丽耶·麦麦提, 王卫霞. 海拔、林龄和郁闭度对天山云杉林土壤肥力的影响 [J]. 生态学杂志, 2023, 42(10): 2477-2485.
[7]	窦文清, 贾伟涛, 张久红, 易雪梅, 温兆飞, 吴胜军, 马茂华. 三峡水库消落带植被现状、适生策略及生态修复研究进展 [J]. 生态学杂志, 2023, 42(1): 208-218.
[8]	程昊天, 孔涛, 吕刚, 王东丽, 黄丽华, 张开, 王翼翔. 不同林龄樟子松人工林土壤-针叶-微生物生态化学计量及稳态性特征 [J]. 生态学杂志, 2022, 41(5): 887-894.
[9]	李晗, 吕刚, 李叶鑫, 程昊天, 刘禹鑫. 露天煤矿排土场不同植被恢复模式土壤养分和酶活性的差异性 [J]. 生态学杂志, 2022, 41(5): 919-924.
[10]	特尼乌, 郭子月, 刘丹, 雒文涛, 乌云娜, 阿如旱, 钱建强. 内蒙古草甸草原地下芽库对极端干旱的响应 [J]. 生态学杂志, 2021, 40(3): 759-765.
[11]	王甜甜, 田育红, 吴秀臣, 张好强. 菌根与植被生长：多变环境下的相互作用 [J]. 生态学杂志, 2021, 40(12): 4061-4068.
[12]	何欣月, 王宁, 刘均阳, 李秋嘉. 黄土丘陵区植物群落多样性及生物量随土壤水分梯度变化特征 [J]. 生态学杂志, 2021, 40(1): 31-40.
[13]	黄桥明, 黄俊, 吕茂奎, 熊小玲, 张世良, 谢锦升. 恢复年限、林下植被及季节对马尾松林土壤氮转化的影响 [J]. 生态学杂志, 2020, 39(8): 2556-2564.
[14]	林雅超，高广磊，丁国栋，王学林，魏晓帅，王陇. 沙地樟子松人工林土壤理化性质与微生物生物量的动态变化 [J]. 生态学杂志, 2020, 39(5): 1445-1454.
[15]	潘复静,张伟,梁月明,王克林,靳振江. 喀斯特不同植被恢复阶段土壤有机酸季节变化与有效氮磷的关系 [J]. 生态学杂志, 2020, 39(4): 1112-1120.

黄土高原半干旱区不同林龄柠条人工林土壤线虫群落特征

Characteristics of soil nematode communities in Caragana korshinskii plantations with different stand ages in semi-arid region of Loess Plateau, Northwest China.

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价