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Ecological stoichiometry of plant-litter-soil and stoichiometric homeostasis of plant tissues under three restoration modes for desertified grasslands in southern Horqin Sandy Land, Northern China
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  • ji yuan,
  • Mingchun Peng,
  • Guoyong Taang,
  • Yun Wang
ji yuan
Yunnan University

Corresponding Author:[email protected]

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Mingchun Peng
Yunnan University
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Guoyong Taang
Chinese Academy of Forestry
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Yun Wang
Linyi University
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Afforestation is the primary ecosystem measure to address the issue of ecosystem degradation in in the Horqin sandy region of northern China. However , It is yet unclear how afforestation may affect the recovery of sandy grassland. This study took the ecological stoichiometry as indicators, and conducted a field investigation and indoor analysis to assess the afforestation strategies of three indigenous tree species for the restoration of sandy grassland , three restoration strategies were: (1) grasslands were enclosed via a Populus × beijingensis shelterbelt (FG); (2) Pinussylvestris var. mongolica was used for the afforestation of small, well-distributed grassland patches (MG); (3) Ulmus pumila was used for the afforestation of small, well-distributed patches (UG). Our result showed that the C, N, and P contents as well as the C: N: P ratio in plants, litters, and soils varied significantly between FG, MG, and UG. All three treatments were found to significantly impact the soil ratios of C:N, N:P, and C:P relative to CK treatment after more than 20 years of recovery. The results of N : P in different tissues showed that FG , MG and UG vegetation restorations were N-limited. N and P homeostasis was present in trees, especially Ulmus pumila, while the degree of homeostasis was significantly impacted by afforestation species and plant tissues. The N:P results suggested that lower N deficiency stress may have been experienced by three experimental plants. We concluded that UG was better suited to the dry climate in Horqin Sandy Land.
27 Mar 2023Submitted to Land Degradation & Development
27 Mar 2023Submission Checks Completed
27 Mar 2023Assigned to Editor
30 Mar 2023Review(s) Completed, Editorial Evaluation Pending
08 May 2023Reviewer(s) Assigned
12 Sep 2023Editorial Decision: Revise Major
13 Oct 2023Reviewer(s) Assigned
02 Feb 2024Review(s) Completed, Editorial Evaluation Pending
03 Feb 2024Editorial Decision: Revise Major
19 Feb 20242nd Revision Received