広葉樹




広葉樹（こうようじゅ、闊葉樹〈かつようじゅ〉ともいう）とは葉が広く平たいサクラやケヤキ、ブナなどの被子植物に属す木本のことである。広葉樹で構成される森林は広葉樹林と称される。


双子葉植物が圧倒的に多いが、ヤシ科、リュウゼツラン科など、単子葉植物も少数ながらある。常緑性と落葉性の樹木があり、それぞれ常緑広葉樹、落葉広葉樹と呼ばれる。温帯から熱帯を中心に多く分布している。針葉樹に対する。


被子植物のことであるので、分類学上裸子植物であるイチョウやソテツ類は、ヘゴなどの木性シダ類とともに、葉が広くても広葉樹でも針葉樹でもない。



関連項目




  • 常緑広葉樹林

    • 熱帯雨林

    • 照葉樹林

    • 硬葉樹林



  • 落葉広葉樹林

  • 木の一覧

  • 天然更新

  • 萌芽更新

  • 樹洞



外部リンク



  • 広葉樹の種苗の移動に関する遺伝的ガイドライン - 森林総合研究所







Popular posts from this blog

android studio warns about leanback feature tag usage required on manifest while using Unity exported app?

Image
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty{ height:90px;width:728px;box-sizing:border-box; } 0 This is a simple project showing cubes on Unity, exported to android project and imported on Android studio. On maifest file it showed following warning: Expecting <uses-feature android:name="android.software.leanback" android:required="false" /> tag I have no information about it. And also on default emptyview android project does not use/mention this feature. I know it is required by TV's and such but why its not added by default? Why is this? And Should I concern about it? android unity3d
Read more

SQL update select statement

Image
0 I'm trying to update an entry in my database (postgresql). I'm having a problem with updating the query: INSERT INTO prices (price, product_id) SELECT product_price, commn_id FROM products_temp as prod WHERE NOT EXISTS (SELECT * FROM prices od WHERE prod.commn_id = od.product_id) OR prod.product_price != ( SELECT price FROM prices as p WHERE p.product_id = prod.commn_id order by p.end desc LIMIT 1 ) Query works fine when i delete: OR prod.product_price != ( SELECT price FROM prices as p WHERE p.product_id = prod.commn_id order by p.end desc LIMIT 1 ) So it seems to me that it's looping through this operation. My question is, how can I fix it? sql postgresql
Read more

'app-layout' is not a known element: how to share Component with different Modules

Image
0 My application was working fine until I decided to go with lazy loading: So, my shared component looks like this: import { Component, Renderer2 } from '@angular/core'; export interface FormModel { captcha?: string; } @Component({ selector: 'app-layout', templateUrl: './app-layout.component.html', styleUrls: ['./app-layout.css'] }) export class FullLayoutComponent { } app-layout.component.ts I am using this component in my Another component say school-home.component.html like this: <app-layout> </app-layout> and it was working fine until I created a Module school-home.module.ts like this: import { NgModule } from '@angular/core'; import { CommonModule } from '@angular/common'; import { SchoolhomeRoutingModule
Read more