[1]SUN Cheng,QIN Fucang,YANG Zhenqi,et al.Research on Stability of Typical Plantation Ecosystems in Feldspathtic Sandstone Area Based on Information Entropy[J].Research of Soil and Water Conservation,2021,28(06):90-97.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
90-97
Column:
Public date:
2021-10-10
- Title:
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Research on Stability of Typical Plantation Ecosystems in Feldspathtic Sandstone Area Based on Information Entropy
- Author(s):
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SUN Cheng1,QIN Fucang1,YANG Zhenqi2,DONG Xiaoyu1,TAI Hui1,REN Xiaotong1
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(1.Key Laboratory of Desert Ecosystem Protection and Restoration of State Forest and Grassland Administration,College of Desert Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010018,China; 2.Institute of Water Resources for Pastoral Area,Ministry of Water Resources,Hohhot 010020,China)
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- Keywords:
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feldspathtic sandstone; multi-level fuzzy evaluation model; stability of plantation ecosystem; information entropy
- CLC:
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Q146
- DOI:
-
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- Abstract:
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In order to explore the stability of different plantation ecosystems in the feldspathtic sandstone area,5 planting types of Pinus tabulaeformis,Armeniaca sibirica,Hippophae rhamnoides,P. tabulaeformis×A. sibirica,P. tabulaeformis×H. rhamnoides were selected as the research objects,and information entropy theory and fuzzy mathematical analysis were adopted. The combined method was used to evaluate the stability of the plantation ecosystems in this area. By analyzing the response of the plantation ecosystem in the feldspathtic sandstone area to stability factors,from the perspective of the structure and function of the plantation,the structure of the plantation,the species diversity under the plantation,and the physical and chemical properties of the soil were selected as the main evaluation subjects to establish an evaluation system,a multi-level fuzzy evaluation model was constructed by combining information entropy theory. The results showed that:(1)the level of ecosystem stability of pure P. tabulaeformis forest was the best,followed by pure A. sibirica forest,pure H. rhamnoides forest,P. tabulaeformis and A. sibirica mixed forest,and P. tabulaeformis and H. rhamnoides mixed forest;(2)the weights of the first-level indicators were soil physical and chemical properties(0.377 2),species diversity(0.320 1),forest stand structure(0.302 7);(3)among the secondary indicators,canopy density(weight 0.326 3),stand density(weight 0.312 6),herb uniformity(weight 0.250 7),herb dominance(weight 0.345 4),soil bulk density(weight 0.251 8),litter accumulation(weight 0.210 5)and other evaluation indicators had the greater response. It was suggested that soil physical and chemical properties were the important factor affecting the stability of the plantation ecosystems in the feldspathtic sandstone; the weights of the three first-level indicators were relatively balanced,reflecting the balance of constraints on ecological governance in this area,and the non-unity ecological fragility; overall evaluation on the P. tabulaeformis forest was stable,and P. tabulaeformis forest was the suitable tree species for vegetation construction in this area.