Response of Regeneration Diversity of Carex Lasiocarpa Community to Different Water Levels in Sanjiang Plain,China  

作　　者：WANG Li SONG Changchun HU Jinmin YANG Tao 

机构地区：[1]Northeast Institute of Geography and Agroecologv, Chinese Academy, of Sciences, Changchun 130012. China [2]Graduate University, of Chinese Academy of Sciences, Beijing 100049, China [3]Asian International Rivers Center. Yunnan University, Kunming 650091, China

出　　处：《Chinese Geographical Science》2010年第1期37-42,共6页中国地理科学（英文版）

基　　金：Under the auspices of the National Basic Research Program of China (No. 2009CB421103);Northeast Revitalization Program,Chinese Academy of Sciences (No. DBZX-2-024)

摘　　要：The species diversity at the regeneration stage, inflenced by different water levels, is important for community composition in the later growing season.Regeneration diversity of Carex lasiocarpa community under different water levels was studied at two stages, recruitment and adult, in the Sanjiang Plain, Heilongjiang Province, China.The results showed that, at the two growing stages, important value of C.lasiocarpa population and species richness of the community decreased with the increasing water level, while the Simpson and Shannon-Wiener diversity indexes and Pielou evenness index increased.Under different water levels, community diversities were higher at the recruitment stage, while population important values of C.lasiocarpa were higher at the adult stage.Indexes in vegetation evaluation must be chosen prudentially for successful restoration and effective management of wetlands, and especially for wetland restoration, the optimal time should be selected according to the restoration objectives and costs.The species diversity at the regeneration stage, inflenced by different water levels, is important for community composition in the later growing season. Regeneration diversity of Carex lasiocarpa community under different water levels was studied at two stages, recruitment and adult, in the Sanjiang Plain, Heilongjiang Province, China. The results showed that, at the two growing stages, important value of C. lasiocarpa population and species richness of the community decreased with the increasing water level, while the Simpson and Shannon-Wiener diversity indexes and Pielou evenness index increased. Under different water levels, community diversities were higher at the recruitment stage, while population important values of C. lasiocarpa were higher at the adult stage. Indexes in vegetation evaluation must be chosen prudentially for successful restoration and effective management of wetlands, and especially for wetland restoration, the optimal time should be selected according to the restoration objectives and costs.

关 键 词：water level population dominance species diversity marsh wetland Sanjiang Plain 

分 类 号：S718.54[农业科学—林学] P641.8[天文地球—地质矿产勘探]