Testing research for assessing suitability of multi-species of trees introduced in habitats in hilly and gully areas of Loess Plateau

To enrich resource of species, 105 arbor species (25 genera, 15 families) were introduced to the hilly and gully areas on Loess Plateau. By acclimation and selection, more than 90 tree species (12 genera, 8 families) were identified as fine species, including trees suitable for sloping fields such as Pinus sylvestri var mongolica, Pinus tabulaeformis, Platycladus orientalis, and Robinia pseudoacacia, trees suitable for gully bottoms such as Populus davidiana, Populus diversifolia, and Salix cheilophila and non-timber trees such as Prunus armeniaca, Ziziphus jujuba and Prunus persica. For those fine trees, habitat conditions and regularity of requirement of water and fertilizers were studied and then habitat ranges were given. From research results, it could be seen that Robinia pseudoacacia consumed more water, but it could improve the content of organic matters in soil; by contrast, Pinus tabulaeformis and Platycladus orientalis consumed less water and were suitable for dry sloping fields; species of apricot were suitable for sunny or semi-shady sloping fields with good conditions of water and fertilizer; species of pear were suitable for both shady sloping fields and sunny sloping fields; species of Chinese date were suitable for sunny sloping fields. __________ Translated from Scientia Silvae Sinica, 2005, 41(5) [译自: 林业科学, 2005, 41(5)]     

危害进口色叶乔木的主要有害生物及发生特点

介绍了色叶乔木6种重要或危险性有害生物。栎树突死病和栎树枯死病是欧美、日本等国家的重要栎树病害,已造成大面积植物死亡,是极其严重的危险性病害;七叶树流胶性溃疡病和七叶树大斑病主要危害七叶树;葡萄座腔菌溃疡病引起北美红栎,连香树等多种植物溃疡病,可导致多种植物死亡。同时研究了上海地区进口色叶乔木引种基地的主要有害生物及发生特点。     

园林绿化中常用落叶乔木简介

落叶乔木在园林绿化中占有重要地位,用途非常广泛,可用作行道树、庭荫树、观叶、观花、观果树及工矿企业绿化树种等.本文介绍了园林绿化中常用的30种落叶乔木的适生条件,并对其在园林绿化中的应用做了评价.     

卧龙自然保护区珙桐林下资源调查初报

为了解卧龙自然保护区珙桐林下乔木、灌木和草本的资源情况,2021年2月至11月,采用设置样方的形式进行珙桐调查,综合参考文献,本次调查发现珙桐林中乔木层物种48种、灌木层物种34种和草本层物种56种,研究其种类及隶属科、属,分析珙桐天然林与日本落叶松人工林林下群落生态、优势属种间的差异,以期为保护野生珙桐资源提供基础信息和科学依据。     

黄土高原不同降雨年型乔、灌木蒸散特征与影响因素

以黄土高原地区17个乔木和15个灌木测定点生长季观测数据为基础,结合气象资料,综合分析了降水量、土壤前期储水量、潜在蒸散量与乔、灌木实际蒸散量的关系,研究了不同降雨年型乔、灌木生长季实际蒸散的差异及其影响因素。结果表明,无论是丰水年还是干旱年,乔木生长季实际蒸散量均高于灌木。不同降雨年型影响乔灌木实际蒸散的主要因素不同,丰水年影响乔灌木生长季实际蒸散的主要因素为降水,其次为潜在蒸散量而干旱年影响乔灌木生长季实际蒸散的主要因素为前期土壤储水量,其次为降水因素。