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Virginie Laberge Sandrine Hugron Line Rochefort Monique Poulin 《Land Degradation \u0026amp; Development》2015,26(8):813-818
Vascular plants associated to natural peatland pools do not spontaneously colonize edges of man‐made pools in restored peatlands and have proven to be recalcitrant to the usual restoration techniques. The goal of this study was to evaluate the effect of the species used as a seedbed (Cladopodiella fluitans, Sphagnum cuspidatum, or Sphagnum magellanicum) and its developmental stage (established carpet or newly reintroduced fragments) on establishment success in the field of the seeds of four vascular species: Carex limosa, Carex magellanica, Carex oligosperma, and Scheuchzeria palustris. The germination rate was measured after one season and growth after two seasons. Seedbed composition and developmental stage had no effect on Carex, whereas the germination of S. palustris was higher on S. cuspidatum. Growth of vascular plants was slightly improved on S. magellanicum carpets and was lower on seedbeds of C. fluitans. Our results lead us to recommend seeding at the same time as bryophyte fragments are spread and fostering introduction of Sphagnum mosses, preferably to C. fluitans, around artificial pool edges. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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报道了陕西秦岭苔草属Cyperaceae一新记录种——匿鳞苔草(Carex aphanolepis Franch.)。该种与秦岭地区日本苔草(Carex japonica Thunb.)相近,所以比较了两者的形态特征,并对该新记录种的形态特征进行了描述。 相似文献
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笔者于2010~2016年对海南岛18个市县的莎草科植物资源进行野外调查,野外调查涉及低山丘陵热性草丛类草地、山地热性草丛类草地、热性灌草丛类草地、干热稀树灌草丛类草地、低湿地草甸类草地、滨海低湿地盐碱类草地及农田间隙十字草地。调查以样线法为主,按指定路线进行推进,调查记录路线范围内出现的该科物种;同时,根据部分属或种对生存环境的专一性开展点状调查。调查时详细记录物种的分布特征信息,并根据分布特征进行归类。结果发现该区域分布有莎草科植物24属164种6亚种和9变种,并根据各类草地的生态环境、群落外貌、结构、种的组成成分等基础信息对莎草科植物的分布特征开展了重点分析研究,发现海南岛莎草科植物的分布划分为5大生态类型:Ⅰ湿生沼生性类型;Ⅱ高郁闭度林下分布类型;Ⅲ向阳山坡灌丛、岩隙或山地灌草丛类型;Ⅳ滨海沙质草地、盐土沼泽和沙滩滩涂类型;Ⅴ旱生性广布类型。 相似文献
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[目的]研究气温和降雨量对高寒草甸不同功能群植物产草量的影响。[方法]选择典型的高寒草甸为研究对象,通过对1995~2004年气温和降雨量变化的分析,对不同功能群产草量的影响进行了研究。[结果]气温和降雨量对禾本科功能群植物的产草量的影响较大,相关性均达到极显著水平;降雨量对莎草科产草量影响较大且相关性达到显著水平。[结论]不同植物个体对气温和降雨量的反应不同。该研究结果可为草地生态学研究提供理论依据。 相似文献
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