摘要
本文通过对半干旱草原大针茅群落最高地上生物量与土壤贮水量之间的相关分析认为，６月中旬至８月初是土壤水分影响年度最高生物量形成的一个重要时期，６月底以前与７月初以后土壤水分对地上最高生物量形成可能具有一定的互补作用。０～３Ｏｃｍ和０～４Ｏｃｍ土层内的水分对地上生物量形成具有较重要的意义。
Based on the data from Inner Mongolia Grassland Ecosydtdm Research Station of A-cademia Sinica,this article gives an analysis on the correlation between soil water capac-ity and yearly highest biomass of Stipa gradis grassland. The result shows:1.There is a very close correlation between soil water and the yearly highest biomass of stipa grandis community.It means that the growth of stips grandis in the area is affected by soil water.The most important stage duringwhich soil water affects plant growth is be-tween middle June and early August, and the critical time is between June and July.2.Soil waters before the end of June and after the begining of July are complemented each other on the formation of yearly highest biomass.3.The soil water in the layer from surface to a depth of 30-40cm and is very important for the formation of yearly highest biomass.
出处
《中国草地》
CSCD
1994年第1期29-34,共6页
Grassland of China
关键词
大针茅草原
草地
土壤含水量
stipa grandis grassland,above ground biomass,soil water
