Regulation Mechanism of Combination of Super Absorbent Polymers and Lignin Crust on Vegetation Restoration in Sandy Grassland

Zhang Yushu; Wu Honghui; Ke Yuguang; Cao Yuanbo; Zhao Jinling; Yu Qiang; Xiao Chunwang

doi:10.13961/j.cnki.stbctb.2021.02.019

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Regulation Mechanism of Combination of Super Absorbent Polymers and Lignin Crust on Vegetation Restoration in Sandy Grassland

- Regulation Mechanism of Combination of Super Absorbent Polymers and Lignin Crust on Vegetation Restoration in Sandy Grassland
- Bulletin of Soiland Water Conservation Vol. 41, Issue 2, Pages: 142-148(2021)
- 作者机构：
  
  1. 中央民族大学生命与环境科学学院,北京,100081
  2. 中国农业科学院农业资源与农业区划研究所/呼伦贝尔草原生态系统国家野外科学观测研究站,北京,100081
  3. 中国科学院植物研究所植被与环境变化国家重点实验室,北京,100093
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2021.02.019
  CLC： S157.9
- Published：2021
- 稿件说明：
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Zhang Yushu, Wu Honghui, Ke Yuguang, et al. Regulation Mechanism of Combination of Super Absorbent Polymers and Lignin Crust on Vegetation Restoration in Sandy Grassland[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 142-148.
DOI：

Zhang Yushu, Wu Honghui, Ke Yuguang, et al. Regulation Mechanism of Combination of Super Absorbent Polymers and Lignin Crust on Vegetation Restoration in Sandy Grassland[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 142-148. DOI： 10.13961/j.cnki.stbctb.2021.02.019.

摘要

[目的] 阐明施用保水剂与木质素结皮结合的恢复措施对沙地植被的调控机制，为荒漠草原沙地植被恢复提供理论依据。[方法] 在内蒙古自治区乌拉特荒漠草原设置试验样地。试验处理包括对照和恢复措施（保水剂与木质素结皮结合）两个处理。测定了植物地上生物量、盖度、土壤含水量、土壤团聚体比例、土壤入渗速率、稳渗速率、碱解氮、速效磷和速效钾的含量。[结果] ①恢复措施显著提高了植物地上生物量和盖度；②恢复措施提高了水稳性大团聚体比例、入渗速率和稳渗速率，降低了微团聚体的比例，从而显著提高了土壤含水量；③恢复措施显著提高了土壤碱解氮、速效磷和速效钾的含量。[结论] 恢复措施提高了土壤含水量和养分含量，提高了沙地植被生产力，从而促进了沙地植被的恢复。

Abstract

[Objective] The mechanism of underlying vegetation restoration in sandy grassland when combined super absorbent polymers with lignin crust was studied

in order to provide a theoretical basis for the restoration of sandy vegetation in desert grassland.[Methods] The experiment was conducted in Urat Desert grassland in Inner Mongolia Autonomous Region. The two treatments were control and restoration measures (combined application of super absorbent polymers and lignin crust). The above-ground biomass

coverage

soil moisture content

proportion of soil aggregates

soil infiltration rate

stable infiltration rate

alkali-hydrolyzable nitrogen

available phosphorus and available potassium content were assessed.[Results] ① Restoration measure significantly increased the aboveground biomass and coverage of plants. ② Restoration measure increased the proportion of water-stable macroaggregates

soil infiltration rate

stable infiltration rate

and soil moisture content

but reduced the proportion of microaggregates. ③ Restoration measure significantly increased the soil alkali-hydrolyzable nitrogen

available phosphorus and available potassium contents.[Conclusion] The restoration measure can increase soil moisture and nutrient contents

improve plant productivity and promote the vegetation restoration in the sandy grassland.

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