荒漠草原土壤线虫对氮沉降及降雨变化的响应

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Abstract A twelve-treatment experiment with the main plot(three water treatments: 30% increase (W), 30% reduction (R),and natural rainfall (CK) and split-plot (0 (N0), 30 (N30), 50 (N50) and 100 (N100) kg/(hm²·a)4nitrogen gradients was designed in Stipa breviflora desert steppe to investigate the impact of nitrogen deposition and rainfall changes on soil nematodes. A total of 41 genera of soil nematodes were identified in the study area, and the dominant community genera were Acrobeles and Acrobeloides. Compared with nitrogen addition, the number of nematodes wasincreased significantly in precipitation and that influences were especially obvious in October. N50 gradient was more beneficial to increase the number of nematodes under the situation of reduced rain. In terms of functional groups, the largest part bacterial-eating nematodes in the 0~10cm soil were 41.00% to 45.56% of the total and an upward trend was shown in the seasonal dynamics, while the lowest part was the number of omnivorous nematodes. Bacteria-eating and fungus-eating nematodes were negatively correlated with nitrogen gradients. According to the ecological index, soil nematode diversity would be inhibited by only increasing rainfall, and the nematode community diversity and stability was not changedby single nitrogen addition. However, the abundance of nematodes was terrifically cut down by lower nitrogen addition. Under dynamic treatments in different seasons, the soil mineralization pathway was affected by micro-nematodes, and the organic matter was mainly degraded by fungi. Under reduced rainfall and nitrogen application, soil anti-interference ability was improved. Important environmental factors affecting soil nematode communities were pH, organic matter, and ammonium nitrogen content. The number of K-strategist groups was increased in increasing soil nitrogen content and decreasing in pH, while the number of R-strategist groups was reduced. Changing in soil nematode community structure was indicated that the stability of the underground food web in the Stipa breviflora desert steppe ecosystem was gradually increased.

Key words： soil nematode nitrogen deposition precipitation change desert steppe

Received: 25 October 2020

PACS:	X171
	S154.5

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	ZHANG Yu-chen
	HONG Mei
	ZHAO Bayinnamula
	YE He
	YAN Jin
	LI Jing
	LIANG Zhi-wei

Cite this article:

ZHANG Yu-chen,HONG Mei,ZHAO Bayinnamula等. Response of soil nematodes in desert steppe to nitrogen deposition and rainfall changes[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(6): 2788-2797.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I6/2788

[1]	Ren G Y, Ding Y H, Zhao Z C, et al. Recent progress in studies of climate change in China[J]. Advances in Atmospheric Sciences, 2012,29(5):958-977.
[2]	颜亮,周广胜,张峰,等.内蒙古荒漠草原植被盖度的空间异质性动态分析[J]. 生态学报, 2012,32(13):4017-4024. Yan L, Zhou G S, Zhang F, et al. Spatial heterogeneity of vegetation coverage and its temporal dynamics in desert steppe, Inner Mongolia[J]. Acta Ecologica Sinica, 2014,32(13):4017-4024.
[3]	Luo C Y, Wang S P, Zhao L, et al. Effects of land use and nitrogen fertilizeron ecosystem respiration in alpine meadow on the Tibetan Plateau[J]. Journal of Soils and Sediments, 2017,17(6):1626-1634.
[4]	宋敏,刘银占,井水水.土壤线虫对气候变化的响应研究进展[J]. 生态学报, 2015,35(20):6857-6867. Song M, Liu Y Z, Jin S S. Response of soil nematodes to climate change:a review[J]. Acta Ecologica Sinica, 2015,35(20):6857-6867.
[5]	周际海,唐嘉婕,郜茹茹,等.不同种类食细菌线虫对石油污染土壤微生物的影响[J]. 中国环境科学, 2020,40(1):357-364. Zhou J H, Tang J J, Hao R R. Effects of different speices of bacterial-feeding nematodes on soil microorganisms in oil-contaminated soils[J]. China Environmental Science, 2020,40(1):357-364.
[6]	李玉娟,吴纪华,陈慧丽,等.线虫作为土壤健康指示生物的方法及应用[J]. 应用生态学报, 2005,16(8):1541-1546. Li Y J, Wu J H, Chen H L, et al. Nematodes as bioindicator of soil health:methods and applications[J]. Chinese Journal of Applied Ecology, 2005,16(8):1541-1546.
[7]	Zhang X K, Guan P T, Wang Y L, et al. Community composition, diversity and metabolic footprints of soil nematodes in differently-aged temperate forests[J]. Soil Biology and Biochemistry, 2015,80(1):118-126.
[8]	牟文雅,贾艺凡,陈小云,等.玉米秸秆还田对土壤线虫数量动态与群落结构的影响[J]. 生态学报, 2017,37(3):877-886. Mou W Y, Jia Y F, Chen X Y, et al. Effects of corn stover cultivation on the population dynamics and genus composition of soil nematode community[J]. Acta Ecologica Sinica, 2017,37(3):877-886.
[9]	Dong Z K, Hou R X, Chen Q Y, et al. Response of soil nematodes to elevated temperature in conventional and no-tillage cropland systems[J]. Plant and Soil, 2013,373(1/2):907-918.
[10]	Ruan W B, Sang Y, Chen Q, et al. The response of soil nematode community to nitrogen, water, and grazing history in the Inner Mongolian Steppe[J]. China Ecosystems, 2012,15(7):1121-1133.
[11]	Mueller K E, Blumenthal D M, Carrillo Y, et al. Elevated CO2 and warning shift the functional composition of soil nematode communities in a semiarid grassland[J]. Soil Biology and Biochemistry, 2016,103(1):46-51.
[12]	卫智军,韩国栋,赵钢,等.中国荒漠草原生态系统研究[M]. 北京:科学出版社, 2013. Wei Z J, Han G D, Zang G, et al. Resaerch of chinese desert grassland ecosystem[M]. Beijing:science press, 2013.
[13]	刘文亭,卫智军,吕世杰,等.放牧对短花针茅荒漠草原植物多样性的影响[J]. 生态学报, 2017,37(10):1-9. Liu W T, Wei Z J, Lv S J, et al. The impacts of grazing on plant diversity in Stipa breviflora desert grassland[J]. Acta Ecologica Sinica, 2017,37(10):1-9.
[14]	Bardgett R D, Usher M B, Hopkins D W. Biological diversity and function in soils[J]. Cambridge:Cambridge University Press, 2005:117-256.
[15]	Yeates G W, Bongers T, De Goede R G M, et al. Feeding habits in soil nematode families and genera-An outline for soil ecologists[J]. Journal of Nematology, 1993,25(3):315-331.
[16]	Bongers T. The maturity index:an ecological measure of environmental disturbance based on nematode species composition[J]. Oecologia, 1990,83(1):14-19.
[17]	鲍士旦主编.土壤农化分析[M]. 第3版.北京:中国农业出版社, 2000:189-196. Bao S d. Soil Agro-chemistrical Analysis[M]. Beijing:China Agriculture Press Chinese Agricultural Press China agriculture Publishing House, 2000:189-196.
[18]	Landesman W J, Dighton J. Response of soil microbial communities and the production of plant-available nitrogen to a two-year rainfall manipulation in the New Jersey Pinelands[J]. Soil Biology and Biochemistry, 2010,42(10):1751-1758.
[19]	Chen D, Lan Z, Bai X, et al. Evidence that acidification-induced declines in plant diversity and productivity are mediated by changes in below-ground communities and soil properties in a semi-arid steppe[J]. Journal of Ecology, 2013,101(5):1322-1334.
[20]	宋敏.增加降水及施氮对弃耕草地土壤线虫和小型节肢动物的影响[J]. 生态学杂志, 2017,36(3):631-639. Song M. Effects of water and nitrogen addition on soil nematodes and small arthropods in an old field grassland of north China[J]. Chinese Journal of Ecology, 2017,36(3):631-639.
[21]	Dijkstra F A, Hobbie S E, Reich P B, et al. Divergent effects of elevated CO2, N fertilization, and plant diversity on soil C and N dynamics in a grassland field experiment[J]. Plant and Soil, 2005, 272(1/2):41-52.
[22]	张爱林,赵建宁,刘红梅,等.氮添加对贝加尔针茅草原土壤线虫群落特征的影响[J]. 生态学报, 2018,38(10):3616-3627. Zhang A L, Zhao J N, Liu H M, et al. Effects of nitrogen addition on soil nematode community characteristics in Stipa baicalensis steppe[J]. Acta Ecologica Sinica, 2018,38(10):3616-3627.
[23]	Wang J, Bao J, Su J, et al. Impact of inorganic nitrogen additions on microbes in biological soil crusts[J]. Soil Biologyand Biochemistry, 2015,88:303-313.
[24]	刘雨迪,陈小云,刘满强,等.不同稻作年限下土壤微生物学性质和线虫群落特征的变化[J]. 生物多样性, 2013,21(3):334-342. Liu Y D, Chen X Y, Liu M Q, et al. Changes in soil microbial properties and nematode assemblage over time during rice cultivation[J]. Biodiversity Science, 2013,21(3):334-342.
[25]	Sun X M, Zhang X K, Zhang S X, et al. Soil nematode responses to increases innitrogen deposition and precipitation in a temperate forest[J]. Plos One, 2013,8(12):e82468.
[26]	张瑶.放牧与施氮对草甸草原土壤线虫群落的作用研究[D]. 长春:东北师范大学, 2016. Zhang Y. Effects of grazing and nitrogen addition on soil nematode community in meadow grassland[M]. Changchun:Northeast Normal University, 2016.
[27]	Yeates G W, Newton P C D, Ross D J. Significant changes in soil microfauna in grazed pasture under elevated carbon dioxide[J]. Biology and Fertility of Soils, 2003,38(5):319-326.
[28]	叶贺,红梅,赵巴音那木拉,等.水氮控制对短花针茅荒漠草原根系分解的影响[J]. 应用与环境生物学报, 2020,26(5):1169-1175. Ye H, Hong M, Zhao B Y N M L, et al. Effects of water and nitrogen treatments on root decomposition in Stipa breviflora desert steppa[J]. Chinese Journal of Applied and Environmental Biology, 2020,26(5):1169-1175.
[29]	Bongers T, Bongers M. Functional diversity of nematodes[J]. Applied Soil Ecology, 1998,10(3):239-251.
[30]	王宇彤,牛克昌.青藏高原高寒草甸土壤环境对线虫功能多样性的影响[J]. 生物多样性, 2020,28(6):707-717. Wang Y T, Niu K C. Effect of soil environment on functional diversity of soil nematodes in Tibetan alpine meadows[J]. Biodiversity Science, 2020,28(6):707-717.