摘要
对黑龙江肇州县羊草＋杂类草群落地上生物量的季节动态、地下生物量的分布以及地上生物量与降雨量、温度之间的关系进行了分析．结果表明，在生长季内，群落地上生物量动态模式呈单峰型，符合四次多项式模型增长，最大地上生物量出现在８月５日，其值为１９７．３ｍ２而后下降；群落地下生物量分布由上至下呈负幂函数变化，其模型为：Ｂｕ＝Ｙ·（Ｄ＋１０）－ｘ．其中在０－３０ｃｍ土层中，群落地下生物量占总地下生物量的７７％～８２％．
This study is carried out in Aneurolcpidium Chincnse+mesopnytic ncvb community of Ahao Zhou.Hellong Jing This paper deals with te seasonal dynamics of abovcground biomass,dist ibutinn of underground biomass and relation between abovcground bionass and enviromental factors (Watir and temperature)Resulsts show that the dynamic pattern of the community aboveground biomass appers as single pead form luring gyowing Season,it confor ms to polynmial model The maximum aboveground biomasss is 197.39/m2 dry matter (DM).occurred on August 5 ary tnen declined. D:stribution of underground siomass decreases as negetive exponcntial function with depth increasing and their modelis:Bu =Y (D+10)-x.Undergyound biomass of the community above 30cm depth mades up 77～82% of the total biomass of the grassland communityunderground bkimass
出处
《黑龙江畜牧兽医》
CAS
北大核心
1994年第8期4-6,共3页
Heilongjiang Animal Science And veterinary Medicine
关键词
羊草
杂类草群落
生物量
数学模型
Anurilepidium chinense+mesophytic nerb community biomass dynamic model
