Research on the Morphological Character and Germination Characteristics of Tamarix elongata Ledeb. Seeds

[Objective] The aim was to study the germination behavior of Tamarix elongata Ledeb.under natural conditions.[Method] By using T.elongata as the experimental materials,the seed morphology and germination characteristics were observed and measured.[Result] ① T.elongata seed was 1 011.96 μm in length and 399.94 μm in width,and the thousand-seed weight was 38.66 mg;② the germination rate,germination energy,germination index and germination coefficient of T.elongata seeds were 95.56%,46.67%,20.25 and 56.86 respectively;③ there were no significant differences in morphology and germination characteristics among the three different geographical populations.[Conclusion] The present research will provide reference for the introduction and breeding of T.elongata as well as the protection of sand dune vegetation.

长穗柽柳种子形态特征与萌发特性研究

[目的]了解柽柳植物在自然条件下的萌发行为。[方法]以长穗柽柳为实验材料,观察研究种子形态与萌发特性。[结果]①长穗柽柳种子平均的长、宽、千粒重分别为1 011.96μm、399.94μm、38.66 mg;②自然条件下长穗柽柳种子平均的发芽率、发芽势、发芽指数、发芽系数分别达到95.56%、46.67%、20.25、56.86;③各地理居群之间的种子形态及萌发特性没有显著性差异。[结论]该研究以期为长穗柽柳的引种繁育及沙丘植被保护提供参考。

和田河流域天然柽柳灌木林生态价值评估

以分布于和田河流域的天然柽柳灌木林地为研究对象,使用影子工程法、机会成本法等方法,评价了其生态系统服务价值.结果表明:在和田河流域,面积为2.23万hm2的天然柽柳灌木林生态系统服务价值在2 970.58～2 974.62 亿元·a-1之间,平均值为2 972.60 亿元·a-1.