%0 Journal Article
%T Response of photosynthesis, morphology and growth of Hedysarum mongolicum seedlings to simulated precipitation change in Maowusu sandland
%A XIAO Chun wang
%A JIA Fu ping
%A ZHOU Guang sheng
%A JIANG Yan ling
%A <br>XIAO Chun-wang
%A JIA Fu-ping
%A ZHOU Guang-sheng
%A JIANG Yan-ling
%J 环境科学学报(英文版)
%D 2002
%I 
%X Response patters were investigated for seedlings of Hedysarum mongolicum, a dominant shrub in Maowusu sandland, to the simulated precipitation change by artificially controlling water supply at four levels. Plant growth characters, in terms of branch number and length, leaf number and area, and biomass, increased while water supply increased. However, the effect of water supply on leaf photosynthetic rate was not significant. Root/shoot biomass ratio significantly decreased with the increase of water supply, which was considered adaptive distribution of biomass investments in the different water supply. Water supply obviously affected branching patter. Branch section number, branch number and length of the same section enhanced as water supply increased. Branch number and length were clearly positive correlation with total and aboveground biomass in four water supply treatments. Branch character fully showed plant growth.
%K simulated precipitation
%K Maowusu sandland
%K semi
%K arid area
%K Hedysarum mongolicum
%K branching patter<br>毛乌苏沙地
%K 半干旱地区
%K 蒙古岩黄芪
%K 光合作用
%K 形态
%K 生长
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=E27D9988CFD153FB1268ACAE51587C8D&yid=C3ACC247184A22C1&vid=F3583C8E78166B9E&iid=0B39A22176CE99FB&sid=CAA7BAE04CB631A1&eid=E2B9962CCD971A0D&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=0&reference_num=22