%0 Journal Article
%T ESTIMATION OF ABOVE- AND BELOW-GROUND BIOMASS OF DOMINANT DESERT PLANT SPECIES IN AN OASIS- DESERT ECOTONE OF MINQIN, CHINA<br>民勤荒漠绿洲过渡带优势植物地上和地下生物量的估测模型
%A WEI Xiao-Ping
%A ZHAO Chang-Ming
%A WANG Gen-Xuan
%A CHEN Bao-Ming
%A CHENG Dong-Liang
%A <br>魏小平
%A 赵长明
%A 王根轩
%A 陈宝明
%A 程栋梁
%J 植物生态学报
%D 2005
%I Editorial Office of Chinese Journal of Plant Ecology
%X Most desert soil management decisions are based on quantitative measurements of the biomass of thedominant plant species. The biomass of the dominant plant species in a typical oasis-desert ecotone (ODE) ofMinqin was measured in 82 plots ( 10 m × 10 m). The results showed that the distribution and total cover wasapproximately 16.12%. Above- and below-ground biomass of five dominant desert species (Nitraria tanguto-rum, Calligonuum mongolicum, Haloxylon ammodendron, Agriophyllum squarrosum and Halogeton arach-noideu) was measured by excavation. Linear regressions were used to analyze the relationships among all thebiomass components for each plant (fresh and dry weight of above- and below-ground biomass) and the basaldiameter, total height and canopy cover. Best fit models were constructed for each species using 80% of thedata. Our results showed that basal diameter (excluding N. tangutorum) and canopy cover were the best pre-dictors of biomass for all five desert plant species. A validation test using the other 20% of the data not usedfor estimating the regression equations indicated that these equations made accurate predictions of desert plantspecies biomass.
%K Plant
%K Biomass
%K Desert
%K Ecotone
%K Oasis<br>植物
%K 生物量
%K 荒漠
%K 过渡带
%K 绿洲
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=2F2173CCFF292BF447DC2681EA33BBAE&aid=69F092B51B24770D&yid=2DD7160C83D0ACED&vid=771469D9D58C34FF&iid=B31275AF3241DB2D&sid=2D207DE75533FA7E&eid=899CC9158FC43EF4&journal_id=1005-264X&journal_name=植物生态学报&referenced_num=5&reference_num=21