Chin Bull Bot ›› 2016, Vol. 51 ›› Issue (3): 335-342.doi: 10.11983/CBB15109

• EXPERIMENTAL COMMUNICATIONS • Previous Articles     Next Articles

Elevational Patterns of Community Species Diversity of Potentilla glabra in Pangquangou of Shanxi Province

Jing Wang, Qindi Zhang, Qiang Xu, Wenjing Zhang, Runcheng Bi*   

  1. College of Life Sciences, Shanxi Normal University, Linfen 041004
  • Received:2015-06-10 Accepted:2015-12-13 Online:2016-05-24 Published:2016-05-01
  • Contact: Bi Runcheng E-mail:sxrcbi@126.com
  • About author:

    ? These authors contributed equally to this paper

Abstract:

We used the sample-plot survey method to examine the structural characteristics of the Potentilla glabra community; we analyzed the change in species diversity with changing altitude gradient and the similarity of the community along the altitude gradient, and the association between diversity indexes of the community. (1) At the same elevation gradient, the diversity index for community α showed the herb layer greater than the shrub layer. The ecological dominance index (D) did not differ by elevation gradient, and other indexes were basically consistent. The P. glabra community appeared between 1 700-1 900 m and 2 100-2 300 m, where the diversity index of the shrub and herb layers was higher, with lower index at 1 900-2 000 m. In addition, except for the J2, all diversity indexes showed significant positive correlation. (2) With increasing altitude, the 4 diversity indexes for community β for the shrub and herb layers increased with increasing altitude; the diversity index was higher for the herb than shrub layer on the whole. (3) With increasing altitude, the Jaccard similarity index decreased. However, with sea level > 2 300 m, the similarity between communities increased and the community was relatively stable.

Table 1

Description of the sample plots"

Sample Altitude in-
terval (m)
Longitude Latitude Slope
(°)
Aspect Main composition
1 1700-1800 111°28′17.33″E 37°50′54.49″N < 5 24°WS Potentilla glabra+Spiraea pubescens+Hippophae rhamnoides
2 1800-1900 111°27′34.0″E 37°50′48.6″N ≥ 5 46°WS P. glabra+S. pubescens+Rosa bella
3 1900-2000 111°13′25.27″E 37°52′35.59″N 9 4°WS P. glabra+S. pubescens+H. rhamnoides
4 2000-2100 111°12′39.79″E 37°52′34.08″N 15 173°SE P. glabra+S. pubescens+Rhamnus parvifolia
5 2100-2200 111°26′56.10″E 37°53′09.38″N 12 27°SW P. glabra+S. alpina+Daphne giraldii
6 2200-2300 111°25′28.6″E 37°50′52.92″N 35 13°WS P. glabra+S. alpina+S. pubescens
7 2300-2400 111°25′16.54″E 37°50′51.58″N 12 6°WS P. glabra+P. fruticosa+S. alpina
8 2400-2500 111°25′15.62″E 37°50′51.64″N 22 35°WS P. glabra+P. fruticosa+Caragana sinica
9 2500-2600 111°28′16.32″E 37°53′23.97″N 13 84°WS P. glabra+P. fruticosa+C. sinica

Table 2

The importance value of Potentilla glabra community"

Shrub species Importance value (%)
1700-
1800 (m)
1800-
1900 (m)
1900-
2000 (m)
2000-
2100 (m)
2100-
2200 (m)
2200-
2300 (m)
2300-
2400 (m)
2400-
2500 (m)
2500-
2600 (m)
Potentilla glabra 58.7 50.9 46.7 49.3 55.4 54.7 46.9 42.0 36.0
Spiraea pubescens 22.3 18.3 49.4 45.8 24.5 12.3 18.0 - -
Rosa bella 5.6 9.5 - - 1.0 5.4 - - -
Ribes burejense 0.4 1.9 - - 0.6 8.3 - - -
Hippophae rhamnoides 11.4 - 3.9 3.0 2.0 - - - -
Swida bretschneideri 0.2 2.5 - - - - - - -
Viburnum dilatatum - 8.1 - - - - - - -
Daphne giraldii 1.4 - - - 12.3 - - - -
Salix wallichiana - 8.7 - - - - - - -
Rhamnus parvifolia - - - 1.8 - - - - -
Spiraea trilobata - - - - - 3.6 - - -
Euonymus nanoides - - - - - 0.9 - - -
Spiraea alpina - - - - 4.3 14.9 28.7 23.9 -
Potentilla fruticosa - - - - - - 6.4 30.1 52.0
Caragana sinica - - - - - - - 4.0 12.0

Fig. 1

The number of species in sample plots"

Fig. 2

Matrix diagram of the correlation of species α diversity index in gaps of different elevation of Potentilla glabra community(Down is index scatterplot; Up is results of index correlation analysis; The main diagonal axis is nuclear density curve. *P<0.05)"

Fig. 3

β diversity index of species in Potentilla glabra community of interval of different altitude((A) Shrub layer; (B) Herb layer)"

Table 3

The similarity index of Potentilla glabra community"

Altitude interval (m) 1700-1800 1800-1900 1900-2000 2000-2100 2100-2200 2200-2300 2300-2400 2400-2500
1800-1900 0.290
1900-2000 0.102 0.191
2000-2100 0.100 0.125 0.457
2100-2200 0.251 0.056 0.257 0.153
2200-2300 0.098 0.078 0.226 0.089 0.255
2300-2400 0.073 0.048 0.185 0.064 0.121 0.182
2400-2500 0.049 0.037 0.112 0.071 0.098 0.132 0.501
2500-2600 0.021 0.025 0.067 0.034 0.021 0.074 0.279 0.506
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