التفاصيل البيبلوغرافية
| العنوان: |
Community Characteristics and Species Diversity of Wetland Plants in the Yangguan Nature Reserve of Dunhuang. |
| المؤلفون: |
DAI Xueling, ZHAO Tingwei, MA Shoushi, LIU Xingwen, YANG Jinwu, MA Haitao, HE Wenli, YANG Jing, DUAN Hongling, XIE Jianping |
| المصدر: |
Journal of Landscape Research; Feb2016, Vol. 8 Issue 2, p55-58, 4p |
| مصطلحات موضوعية: |
WETLAND plants, SPECIES diversity, BIODIVERSITY, NATURE reserves |
| مصطلحات جغرافية: |
DUNHUANG (China) |
| مستخلص: |
As a typical inland wetland, Yangguan nature reserve wetland in Dunhuang is one of the important stops of migratory route for birds, which is vulnerable and particular. Study on the community characteristics and species diversity of wetland has great significance for biodiversity protection. Based on the field investigation, the floristic composition, geographical elements and species diversity of wetland plants were studied in Yangguan reserve of Dunhuang. The results showed that 26 families, 56 genera and 74 species were recorded in the study area. The largest families were the Gramineae and Chenopodiaceae, accounting for 29.73% of the total. Herbs were the most abundant life-form, accounting for 77.03% of the total. The floral geographical elements of the plants were mainly composed of temperate zone distribution type. By using two way indicator species analysis (TWINSPAX), the vegetation in 36 sampling plots could be classified into 8 communities. The species diversity indexes of communities were relatively low, but had large differences among each other. According to the importance value, the Margalef richness index (Rm) ranged from 0 to 4.200. Simpson diversity index (D) was between 0 and 0.512; Shannon diversity index (H) ranged from 0 to 1.400, and Pielou evenness index (J) was within the range of 0.538 to 1.000. The results indicated that the plant species were relatively rare and simple in general, the species diversity of communities was low, and the ecological environment was fragile in Yangguan nature reserve of Dunhuang. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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