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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (5): 101-108.doi: 10.11707/j.1001-7488.20140513

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Ecological Stability of Sand-Fixed Plantations in Huangyangtan

Xing Cunwang1,2,3, Huang Xuanrui1, Li Yuling1, Ma Zengwang2,3, Fu Xiaoyan4   

  1. 1. College of Forestry, Agricultural University of Hebei Baoding 071000;
    2. Hebei Academy of Forestry Science Shijiazhuang 050061;
    3. Hebei Engineering Research Center for Tree Varieties Shijiazhuang 050061;
    4. Xiaowutai Mountain National Nature Reserve Management Bureau Yuxian 075700
  • Received:2013-03-17 Revised:2014-03-28 Online:2014-05-25 Published:2014-06-06
  • Contact: 黄选瑞

Abstract:

Ecological stability is important to maintain ecological function of sand-fixed plantation. This study was conducted in sand-fixed plantation in Huangyangtan, Hebei Province. An index system for ecological stability assessment was established based on 12 parameters in life cycle, tree species resistance and system protection function. The ecological stability of different sand-fixed plantations in the study region was evaluated by using subordinate function of fuzzy mathematics. The result showed that some wind-breaking and sand-fixed forests, including Sabina vulgaris, Caragana korshinskii, Pinus sylvestris var. mongolica, Sabina vulgaris×Amorpha fruticosa, Platycladus orientalis, Pinus sylvestris var. mongolica ×Amorpha fruticosa, Elaeagnus angustifolia, had relatively strong ecological stability. The result suggested these plantations were suitable to local environment, strong resistant to extreme drought, and beneficial for exerting their edological function. The plantations including Ulmus pumila, Salix gordeivii and Populus bolleana, had the middle level of ecological stability. While plantations including Populus simonii×(Populus pyramidalis+Salix matsudana) cv.Poplaris, Populus simonii and Robinia pseudoacacia, had the lower level of ecological stability than others. In 2009 year, a severe drought happened in Huangyangtan, which facilitated an investigation on the drought resistance among main tree species under natural conditions. Mainly based on the comparison of mortality and defoliation, the drought resistance of the 12 tree species was ranked. The management strategies for plantations with different stability types were proposed based on influence factors.

Key words: sand-fixed plantation, ecological stability, evaluation method, drought resistance, Huangyangtan sandy land

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