Effects of Shrub Encroachment on Soil Organic Carbon, Nitrogen and Phosphorus Nutrients, and Enzyme Activity in Loess Plateau

Ding Ying; Liu Xiaowei; Guo Liang; Jing Yudu; Feng Junhao; Liang Ke; Pei Mengting; Xiong Qianli

doi:10.13961/j.cnki.stbctb.2024.05.026

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Effects of Shrub Encroachment on Soil Organic Carbon, Nitrogen and Phosphorus Nutrients, and Enzyme Activity in Loess Plateau

- Effects of Shrub Encroachment on Soil Organic Carbon, Nitrogen and Phosphorus Nutrients, and Enzyme Activity in Loess Plateau
- Bulletin of Soiland Water Conservation Vol. 43, Issue 5, Pages: 243-250(2024)
- 作者机构：
  
  1. 西北农林科技大学草业与草原学院, 陕西杨凌,712100
  2. 中国科学院教育部水土保持与生态环境研究中心, 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. 西北农林科技大学水土保持科学与工程学院, 陕西杨凌,712100
  5. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2024.05.026
  CLC： S154.1;S812.2
- Published：2024
- 稿件说明：
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Ding Ying, Liu Xiaowei, Guo Liang, et al. Effects of Shrub Encroachment on Soil Organic Carbon, Nitrogen and Phosphorus Nutrients, and Enzyme Activity in Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2024, 43(5): 243-250.
DOI：

Ding Ying, Liu Xiaowei, Guo Liang, et al. Effects of Shrub Encroachment on Soil Organic Carbon, Nitrogen and Phosphorus Nutrients, and Enzyme Activity in Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2024, 43(5): 243-250. DOI： 10.13961/j.cnki.stbctb.2024.05.026.

摘要

[目的] 探究黄土高原封育草地土壤养分及微生物养分需求变化对草地灌丛化的响应特征，为黄土高原封育草地资源管理提供科学参考。[方法] 选取云雾山国家级自然保护区未灌丛化草地、半灌木白莲蒿(Artemisia sacrorum)扩张草地和灌木矮脚锦鸡儿(Caragana brachypoda)扩张草地为研究对象，测定不同样地土壤理化性质及参与土壤碳、氮、磷循环的5种酶活性，分析草地灌丛化对土壤养分、酶活性及化学计量比的影响。[结果] 草地灌丛化提高了土壤水分、养分含量及碳、氮、磷循环酶活性，但是不同土层土壤微生物养分需求并不一致。在0—15 cm土层中灌丛化草地土壤微生物对磷元素需求更高，而在15—30 cm土层中灌丛化草地土壤微生物对碳元素需求更高。冗余分析结果表明，土壤中养分有效性是影响土壤酶活性及化学计量比变化的关键因子。[结论] 鉴于黄土高原封育草地灌丛化对土壤养分含量及酶活性的正效应，且灌丛下土壤微生物会通过改变碳、氮、磷循环酶相对投入以满足其养分需求，因此，未来该地区半灌木和灌木扩张趋势会进一步加强，亟待探索相应的调控措施以维持黄土高原草地生态系统稳定性。

Abstract

[Objective] The response characteristics and demand changes of soil and microbial nutrients to shrub encroachment in Loess Plateau were investigated to provide reference for grassland resource management in the Loess Plateau. [Methods] The no-shrub encroachment grassland

subshrub (Artemisia sacrorum) encroachment grassland

and shrub (Caragana brachypoda) encroachment grassland in the Yunwu Mountain National Nature Reserve and measured the physicochemical properties of soil and activities of five enzymes involved in soil carbon

nitrogen

and phosphorus cycles. Afterward

we analyzed the effects of subshrub and shrub encroachment on soil nutrient content

enzyme activities

and stoichiometric ratios. [Results] Subshrub and shrub encroachment increased the content of soil water and nutrients and the activities of carbon

nitrogen

and phosphorus cycling enzymes. Soil microbial nutrient demands were not consistent across soil layers: in the 0—15 cm soil layer

soil microorganisms in the subshrub and shrub encroachment grassland had a higher demand for phosphorus element

whereas in the 15—30 cm soil layer

soil microorganisms had a higher demand for carbon element. Redundancy analysis showed that soil available nutrients were the key factors affecting soil enzyme activity and stoichiometric ratio. [Conclusion] Subshrub and shrub encroachment had positive effects on soil nutrient content and enzyme activity of enclosed grassland in Loess Plateau

and soil microorganisms under the subshrub and shrub encroachment grassland met their nutrient demands by changing the relative input of carbon

nitrogen

and phosphorus cycling enzymes; therefore

the trend of subshrub and shrub expansion in the region need to be further strengthened in the future. To maintain the stability of grassland ecosystem in Loess Plateau

corresponding regulatory measures need to be explored urgently.

关键词

Keywords

references

Bai Yongfei, Cotrufo M F. Grassland soil carbon sequestration: Current understanding, challenges, and solutions [J]. Science, 2022,377(6606):603-608.

高琼,刘婷.干旱半干旱区草原灌丛化的原因及影响：争议与进展[J].干旱区地理,2015,38(6):1202-1212. Gao Qiong, Liu Ting. Causes and consequences of shrub encroachment in arid and semiarid region: A disputable issue [J]. Arid Land Geography, 2015,38(6):1202-1212.

魏楠,赵凌平,谭世图,等.草地灌丛化研究进展[J].生态科学,2019,38(6):208-216. Wei Nan, Zhao Lingping, Tan Shitu, et al. Research progress on shrub encroachment in grasslands [J]. Ecological Science, 2019,38(6):208-216.

Li He, Shen Haihua, Zhou Luhong, et al. Shrub encroachment increases soil carbon and nitrogen stocks in temperate grasslands in China [J]. Land Degradation & Development, 2019,30(7):756-767.

张瑞红,蔡文涛,来利明,等.鄂尔多斯高原灌草群落土壤理化性质变化[J].草业科学,2018,35(6):1352-1360. Zhang Ruihong, Cai Wentao, Lai Liming, et al. Dynamics of soil physicochemical properties in shrub and grass communities in Ordos Plateau [J]. Pratacultural Science, 2018,35(6):1352-1360.

刘小龙,胡健,周青平,等.若尔盖高原典型草地灌丛化对植被特征和土壤养分的影响[J].草地学报,2022,30(4):901-908. Liu Xiaolong, Hu Jian, Zhou Qingping, et al. Effects of typical shrub-encroached grassland on vegetation characteristics and soil nutrients in the Zoige plateau [J]. Acta Agrestia Sinica, 2022,30(4):901-908.

Zhang Ting, Ma Wenming, Tian Yu, et al. The mitigation of microbial carbon and nitrogen limitations by shrub encroachment: Extracellular enzyme stoichiometry of the alpine grassland on the Qinghai-Tibetan Plateau [J]. Biogeochemistry, 2023,165(2):205-225.

Gao Xiaoli, Li Xiaogang, Zhao Ling, et al. Shrubs magnify soil phosphorus depletion in Tibetan meadows: Conclusions from C∶N∶P stoichiometry and deep soil profiles [J]. Science of the Total Environment, 2021,785:147320.

Sinsabaugh R L, Hill B H, Follstad Shah J J. Ecoenzymatic stoichiometry of microbial organic nutrient acquisition in soil and sediment [J]. Nature, 2009,462(7274):795-798.

Akinyemi D S, Zhu Yankun, Zhao Mengying, et al. Response of soil extracellular enzyme activity to experimental precipitation in a shrub-encroached grassland in Inner Mongolia [J]. Global Ecology and Conservation, 2020,23:e01175.

赵芳,张明伟,王春雯,等.锦鸡儿属灌丛化对草原化荒漠区土壤线虫群落组成和代谢足迹的影响[J].生态学报,2022,42(10):4124-4136. Zhao Fang, Zhang Mingwei, Wang Chunwen, et al. Effects of

Caragana

shrub encroachment on soil nematode community composition and metabolic footprints in steppe desert region [J]. Acta Ecologica Sinica, 2022,42(10):4124-4136.

张敬敏,珠娜,蔡育蓉,等.小叶锦鸡儿(

Caragana microphylla

)灌丛对草本群落特征的影响[J].生态学报,2023,43(21):8830-8839. Zhang Jingmin, Zhu Na, Cai Yurong, et al. Effects of

Caragana microphylla

on herbaceous community characteristics [J]. Acta Ecologica Sinica, 2023,43(21):8830-8839.

顾继雄,郭天斗,王红梅,等.宁夏东部荒漠草原向灌丛地转变过程土壤微生物响应[J].草业学报,2021,30(4):46-57. Gu Jixiong, Guo Tiandou, Wang Hongmei, et al. Responses of soil microbes across an anthropogenic transition from desert steppe grassland to shrubland in eastern Ningxia [J]. Acta Prataculturae Sinica, 2021,30(4):46-57.

闫丽娟,王海燕,李广,等.黄土丘陵区4种典型植被对土壤养分及酶活性的影响[J].水土保持学报,2019,33(5):190-196. Yan Lijuan, Wang Haiyan, Li Guang, et al. Effects of four typical vegetations on soil nutrient and enzymes activities in Loess Hilly Region [J]. Journal of Soil and Water Conservation, 2019,33(5):190-196.

乔文英,安琪琪,常小峰,等.黄土高原草地灌丛化对潜在植被截留和土壤蓄水能力的影响[J].水土保持通报,2022,42(1):69-76. Qiao Wenying, An Qiqi, Chang Xiaofeng, et al. Effects of shrub encroachment on potential vegetation interception and soil water-holding capacity of grasslands on Loess Plateau [J]. Bulletin of Soil and Water Conservation, 2022,42(1):69-76.

鲍士旦.土壤农化分析[M].3版.北京:中国农业出版社,2000. Bao Shidan. Soil Agrochemical Analysis [M]. 3rd. Beijing: China Agriculture Press, 2000.

张之钰,武海涛,刘吉平,等.微塑料对稻田土壤温室气体排放和微生物群落的影响[J].生态学报,2024,44(10):4308-4318. Zhang Zhiyu, Wu Haitao, Liu Jiping, et al. Effect of microplastics on greenhouse gas emissions and microbial communities in paddy soils [J]. Acta Ecologica Sinica, 2024,44(10):4308-4318.

Saiya-Cork K R, Sinsabaugh R L, Zak D R. The effects of long term nitrogen deposition on extracellular enzyme activity in an

Acer saccharum

forest soil [J]. Soil Biology and Biochemistry, 2002,34(9):1309-1315.

Eldridge D J, Bowker M A, Maestre F T, et al. Impacts of shrub encroachment on ecosystem structure and functioning: Towards a global synthesis [J]. Ecology Letters, 2011,14(7):709-722.

张振杰,于露,王红梅.荒漠草原向灌丛转变过程两种优势植物定植土壤水分阈值特征[J].生态学报,2022,42(19):8061-8072. Zhang Zhenjie, Yu Lu, Wang Hongmei. Characteristics of soil moisture threshold for the seedling establishment of two dominant plants in desert 汧敲?灳桳潬獡灮桤漭牳畨獲??慬湡摮?攠湴穲祡浮敳?慴捩瑯楮瘠楛瑊祝?椠湁?灴慡搠摅祣?獬潯楧汩?孡?嵓??卩捣楡攬渠琲椰昲椲挬?刲攨瀱漹爩琺猸??㈱?劳??????????????扵物?孙?の嵧?剩敮湧??框敡湮杧樠楌敩???慵湡杮??楇??圠畘??楯慢湩?瀬椠湥杴??敬琮?慎污??呲敡浬瀠潧牲慡汳?癬慡牮楤愠瑡楳漠湴?楥渠?獰潴楩汭?敬渠穰祡浴整?慲据琠楯癦椠瑶楥敧獥?慡晴瑩敯牮?慲晥晳潴牯敲獡瑴慩瑯楮漠湩?椠湡?瑩桤攠??潤攠獳獥?偩氭慡瑲敩慤甠???桩楯湮慳?嬠?嵶???敮潣摥攠牦浲慯???ふ????????ど???????扮爠?学??嵯?卬椠湭獩慣扲慯畢来桳?剛?????潣潩牥桮散慥搠??????删敔獯潴畡牬挠故?慶汩汲潯据慭瑥楮潴測?琲漰?改砬琶爴愸挺攳永永甭氳愹爷?攼湢穲社浛攲′灝爠潇摵畯挠瑑楩潡湮????浮漠摚敨汯?晧潭物?湧椬琠片潨条敮湩?慡湤摥?瀠案漬猠灥桴漠牡畬献?捓潨湩瑦牴漠汩?漠晭?汣楲瑯瑢敩牡?搠散捯潭浭灵潮獩楴瑩楥潳渠?孥?嵩??卥潤椠汢??楶潥汧潥杴祡?慩湯摮??楯潩捬栠散浨楡獲瑡牣祴???????????ぬ????の???????rub encroachment in a semi-arid grassland [J]. Ecological Indicators, 2022,137:108768.

Ding Leilei, Wang Puchang, Zhang Wen, et al. Shrub encroachment shapes soil nutrient concentration,stoichiometry and carbon storage in an abandoned subalpine grassland [J]. Sustainability, 2019,11(6):1732.

Pellegrini E, Boscutti F, Alberti G, et al. Stand age,degree of encroachment and soil characteristics modulate changes of C and N cycles in dry grassland soils invaded by the N

-fixing shrub

Amorpha fruticose

. Science of the Total Environment, 2021,792:148295.

Xu Xiaofeng, Thornton P E, Post W M. A global analysis of soil microbial biomass carbon, nitrogen and phosphorus in terrestrial ecosystems [J]. Global Ecology and Biogeography, 2013,22(6):737-749.

Feng D, Bao W. Shrub encroachment alters topsoil C∶N∶P stoichiometric ratios in a high-altitude forest cutover [J]. IForest-Biogeosciences and Forestry, 2018,11(5):594-599.

Maestre F T, Puche M D, Guerrero C, et al. Shrub encroachment does not reduce the activity of some soil enzymes in Mediterranean semiarid grasslands [J]. Soil Biology and Biochemistry, 2011,43(8):1746-1749.

Ding Leilei, Shang Yishun, Zhang Wen, et al. Disentangling the effects of driving forces on soil bacterial and fungal communities under shrub encroachment on the Guizhou Plateau of China [J]. Science of the Total Environment, 2020,709: 136207.

Jing Yulin, Zhang Yuhu, Han I, et al. Effects of different straw biochars on soil organic carbon, nitrogen, availab

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