快速培育黄土高原苔藓结皮的关键影响因子  

Key Influential Factors of Rapid Cultivation of Moss Crusts on Loess Plateau

作　　者：杨永胜[1] 冯伟[2] 袁方[3] 张朋[3] 叶菁[1] 卜崇峰[3,1] 

机构地区：[1]中国科学院水利部水土保持研究所,陕西杨凌712100 [2]水利部水土保持监测中心,北京100055 [3]西北农林科技大学水土保持研究所,陕西杨凌712100

出　　处：《水土保持学报》2015年第4期289-294,299,共7页Journal of Soil and Water Conservation

基　　金：中国科学院西部之光(2014-91);黄土高原土壤侵蚀与旱地农业国家重点实验室基金(K318009902-1405);中央高校优秀青年科研业务专项基金(2014YQ006)

摘　　要：为探索快速培育黄土高原苔藓结皮的关键影响因子,利用正交试验设计方法,研究了表层土壤含水量、光照强度和接种量3种因素对黄土高原苔藓结皮生长发育的影响,初步探讨了在黄土高原地区快速培育苔藓结皮的可行性。结果表明：（1）表层土壤含水量、光照强度及接种量均对黄土高原苔藓结皮（土生对齿藓为优势种）盖度、株密度和生物量的变化有极显著影响（P〈0.01）。（2）对苔藓结皮盖度和株密度而言,3种因素的影响顺序依次为表层土壤含水量〉光照强度〉接种量;对生物量而言,其影响顺序依次为表层土壤含水量〉接种量〉光照强度。（3）快速培育黄土高原苔藓结皮的最佳因子组合为表层土壤含水量25%-30%＋光照强度1 000lx＋接种量700g/m2,在人工气候室条件下培育40d,苔藓结皮盖度可以迅速达到95%。In order to explore the key influential factors of rapid cultivation of moss crusts on the Loess Plateau,the orthogonal experimental design method was used in the test to analyze the influences of surface soil moisture,light intensity and inoculation amount on the growth and development of moss dominated crusts,and to explore the feasibility of rapid cultivation of moss dominated crusts on the Loess Plateau.The results showed that（1）surface soil moisture,light intensity and inoculation amount had extremely significant effect on the change of coverage,density and biomass of moss crusts which was dominated by Didymodon vinealis（Brid.）Zand（P〈0.01）.（2）As for the coverage and density of moss dominated crusts,the influence order of the three factors was surface soil moisture,light intensity,and inoculation amount;as for biomass,the influence order of three factors was surface soil moisture,inoculation amount,and light intensity.（3）The best combination of factors for rapid cultivation of moss dominated crusts on the Loess Plateau was surface soil moisture（25%to 30%）,light intensity（1 000lx）,and inoculation amount（700g/m2）.Under environmental chamber condition,the coverage of moss dominated crusts could rapidly reach 95%in 40 days.

关 键 词：苔藓结皮 土壤含水量 光照强度 盖度 株密度 生物量 

分 类 号：S154[农业科学—土壤学]