林业资源管理
林業資源管理
임업자원관리
FORESTRY RESOURCE MANAGEMENT
2014年
z1期
48-50,55
,共4页
林木枯损量%枯损率%变化趋势
林木枯損量%枯損率%變化趨勢
림목고손량%고손솔%변화추세
mortality volume%mortality rate%development trend
利用第八次全国森林资源清查数据，对全国林木枯损量现状及其变化趋势进行了专题分析。结果表明，全国林木蓄积年均枯损量约1.18亿m3，由各种灾害引起的林木枯损量占近40％。与第七次清查相比，林木年均枯损消耗量增加18％，枯损量增加主要来自集体林，人工林和幼龄林的枯损量增加幅度较大。白桦、冷杉林的枯损率较高，平均郁闭度0.75以上的林分枯损率高，特用林的年均枯损率也较高。因此，加强森林经营管理、推进森林抚育工作十分迫切。
利用第八次全國森林資源清查數據，對全國林木枯損量現狀及其變化趨勢進行瞭專題分析。結果錶明，全國林木蓄積年均枯損量約1.18億m3，由各種災害引起的林木枯損量佔近40％。與第七次清查相比，林木年均枯損消耗量增加18％，枯損量增加主要來自集體林，人工林和幼齡林的枯損量增加幅度較大。白樺、冷杉林的枯損率較高，平均鬱閉度0.75以上的林分枯損率高，特用林的年均枯損率也較高。因此，加彊森林經營管理、推進森林撫育工作十分迫切。
이용제팔차전국삼림자원청사수거，대전국림목고손량현상급기변화추세진행료전제분석。결과표명，전국림목축적년균고손량약1.18억m3，유각충재해인기적림목고손량점근40％。여제칠차청사상비，림목년균고손소모량증가18％，고손량증가주요래자집체림，인공림화유령림적고손량증가폭도교대。백화、랭삼림적고손솔교고，평균욱폐도0.75이상적림분고손솔고，특용림적년균고손솔야교고。인차，가강삼림경영관리、추진삼림무육공작십분박절。
This paper studies the current situation and development trend of the annual mortality volume based on the data of the 8th National Forest Inventory.The results show that the annual mortality volume of the whole country is 118 million m3,among which,near 40%are caused by forest disasters.Compared with the previous inventory,the annual mortality volume grows by 18%,which is mostly from the collec-tively-owned forests.The mortality volume of both plantations and young forests increases fast.The mor-tality rates of such forests as Betula platyphylla and Abies fabric are high.Also the forests with more than 0.75 crown closure and the special-purpose forests have higher mortality rates than others.Strengthening demands on forest management and promoting of forest tending are very urgent.
