水位梯度对湿地植物生长、繁殖和生物量分配的影响  

INFLUENCE OF WATER LEVEL GRADIENT ON PLANT GROWTH, REPRODUCTION AND BIOMASS ALLOCATION OF WETLAND PLANT SPECIES

作　　者：王海洋[1] 陈家宽[1] 周进[1] 

机构地区：[1]武汉大学生命科学学院

出　　处：《植物生态学报》1999年第3期269-274,共6页Chinese Journal of Plant Ecology

基　　金：国家教委"长江关键地区生物多样性保护生物学的若干重大问题研究"课题

摘　　要：本文考察了水位梯度对武夷慈姑（Ｓａｇｉｔａｒｉａｗｕｙｉｅｎｓｉｓ）、小慈姑（Ｓ．ｐｏｔａｍｏｇｅｔｉｆｏｌｉａ）、野荸荠（Ｅｌｅｏｃｈａｒｉｓｐｌａｎｔａｇｉｎｅｉｆｏｒｍｉｓ）和锐棱荸荠（Ｅ．ａｃｕｔａｎｇｕｌａ）植物幼苗生长、繁殖器官干重、生物量及其分配式样的影响。实验表明：植物高度、生物量及其分配对水位梯度的反应在种间有一定差异，而慈姑属植物的叶数、荸荠属植物的秆数、繁殖器官干重等对水位梯度处理的反应在种间有一定相似性。综合植物生物量和繁殖的反应特点，可以认为武夷慈姑和锐棱荸荠适宜生长在０～５ｃｍ水深处，小慈姑在２０ｃｍ水深处生长较佳，而野荸荠适宜于０～２０ｃｍ范围。结果提示：湿地植物的空间分布与其对水位反应的差异性有一定关系。The effects of water level gradient on the growth,reproduction and biomass allocation of the four wetland plant species: Sagittaria wuyiensis, S. potamogetifolia,Eleocharis plantagineiformis and E.acutagula , were studied with cultivated population.Seedlings of four species were cultivated in four water level treatments, i.e. 40cm, 20cm,0～5cm water depth and 5cm below the substrate surface. The four wetland plant species showed significant response to the gradient, and for these species, S.wuyiensis and B.acutangula preferred the treatment of 0～5cm water depth, S.potamogetifolia preferred 20cm and B.plantgineiformis 0～20cm. The distinct response patterns might explain the spatial distribution of the wetland plants to some extent.

关 键 词：水位梯度 湿地植物 生长 繁殖 生物量 

分 类 号：Q948.3[生物学—植物学] Q948.158