江西林业科技
江西林業科技
강서임업과기
JIANGXI FORESTRY SCIENCE AND TECHNOLOGY
2014年
6期
10-14
,共5页
刘光正%林小凡%岳军伟%朱恒%张天海%王丽艳
劉光正%林小凡%嶽軍偉%硃恆%張天海%王麗豔
류광정%림소범%악군위%주항%장천해%왕려염
次生林%更新幼苗%群落组成
次生林%更新幼苗%群落組成
차생림%경신유묘%군락조성
secondary forest%regeneration seeding%community composition
为了解实生和萌生幼苗个体数量及比例在各类植被中的变化情况,本文以江西德兴常绿阔叶林不同林分为研究对象,对各林型中幼苗的种类组成、数量、多样性与更新方式进行调查研究。结果表明:7种林分类型的乔木更新情况不同,德兴常绿阔叶林更新幼苗共35种,分属17科23属。更新苗数量最低的是拟赤杨+马尾松林,仅为1250株/hm2,更新苗最多的林分类型为米槠+甜槠林,为6500株/hm2;甜槠+木荷林更新幼苗种类高达25种,居7种林分之首,马尾松+木荷林下幼苗仅有10种;从演替更新年龄结构来看,马尾松+木荷林和丝栗栲+木荷林所在的群落,林下更新苗属于增长型锥体。其它5种林型属于下降型锥体。
為瞭解實生和萌生幼苗箇體數量及比例在各類植被中的變化情況,本文以江西德興常綠闊葉林不同林分為研究對象,對各林型中幼苗的種類組成、數量、多樣性與更新方式進行調查研究。結果錶明:7種林分類型的喬木更新情況不同,德興常綠闊葉林更新幼苗共35種,分屬17科23屬。更新苗數量最低的是擬赤楊+馬尾鬆林,僅為1250株/hm2,更新苗最多的林分類型為米櫧+甜櫧林,為6500株/hm2;甜櫧+木荷林更新幼苗種類高達25種,居7種林分之首,馬尾鬆+木荷林下幼苗僅有10種;從縯替更新年齡結構來看,馬尾鬆+木荷林和絲慄栲+木荷林所在的群落,林下更新苗屬于增長型錐體。其它5種林型屬于下降型錐體。
위료해실생화맹생유묘개체수량급비례재각류식피중적변화정황,본문이강서덕흥상록활협림불동림분위연구대상,대각림형중유묘적충류조성、수량、다양성여경신방식진행조사연구。결과표명:7충림분류형적교목경신정황불동,덕흥상록활협림경신유묘공35충,분속17과23속。경신묘수량최저적시의적양+마미송림,부위1250주/hm2,경신묘최다적림분류형위미저+첨저림,위6500주/hm2;첨저+목하림경신유묘충류고체25충,거7충림분지수,마미송+목하림하유묘부유10충;종연체경신년령결구래간,마미송+목하림화사률고+목하림소재적군락,림하경신묘속우증장형추체。기타5충림형속우하강형추체。
Objective to find out the change of the quantity and ratio of regeneration seedlings in types of vegetations. Taking different stand of evergreen broad-leaved forests in Dexing city of Jiangxi province as the research object, investigation was carried out on seedings of different stands tree species composition including species composition, quantity, species diversity and regeneration patterns. The results showed that tree regeneration situation was different in 7 forest stand types. Under the natural secondary forest, there were 35 species regeneration seedlings which were belonged to 17 families and 23 genera, respectively. The number of regeneration seedlings (1 250/hm2) was fewest under the Alniphyllum fortunei and Pinus massoniana forests, but highest under Castanopsis eyrei and C. carlesii forests (6 500/hm2). The 25 species of regeneration seedlings under C. eyrei and Schima superba forests were more then 10 species under P. massoniana and S. superba forests. From succession and age structure, the regeneration seedlings of two communitys of P. massoniana and S. superba forests and C. fargesii and S. superba forests were belong to growth-cones, other five forest types seedlings were drop type-cones.