本文選題：森林凋落量 + 地統(tǒng)計��； 參考：《應(yīng)用生態(tài)學(xué)報》2017年08期

【摘要】：通過構(gòu)建全國尺度上森林葉凋落量和總凋落量與年平均溫度、年平均降雨量和實際蒸散量的關(guān)系模型,應(yīng)用地統(tǒng)計學(xué)分析方法,并結(jié)合遙感解譯的森林覆蓋信息,分析2001、2006和2012年中國森林葉凋落量和總凋落量的空間分布及其變異格局.結(jié)果表明:與年平均溫度和降雨量相比,區(qū)域尺度上實際蒸散量對森林葉凋落量和總凋落量有更好的解釋預(yù)測關(guān)系;分布于中南地區(qū)的常綠闊葉林的年凋落量最高,為636.2 g·m~(-2),分布于東北地區(qū)的溫帶落葉闊葉林的年凋落量范圍為339~385 g·m~(-2),其中,森林葉凋落量約占總凋落量的70%.2001、2006和2012年,全國森林凋落總量分別為801、865和1032 Tg,呈明顯增長趨勢,而基于遙感圖像解譯的森林年覆蓋率分別為18%、20%和24%,呈增長趨勢.我國人工林面積的迅速增加和林分生長,極大影響了森林凋落物量及其動態(tài)變化,進而對森林生態(tài)系統(tǒng)物質(zhì)循環(huán)產(chǎn)生重要影響.
[Abstract]:Based on the model of relationship between forest leaf litter amount, total litter amount and annual average temperature, annual average rainfall and actual evapotranspiration on the national scale, the geostatistical analysis method was applied and the forest cover information was interpreted by remote sensing. The spatial distribution and variation pattern of leaf litter and total leaf litter in China in 2006 and 2012 were analyzed. The results showed that the actual evapotranspiration in regional scale had a better relation with the annual mean temperature and rainfall, and the annual litterfall of evergreen broadleaved forest was the highest in the south of central China. The annual litter amount of temperate deciduous broad-leaved forest in Northeast China is 339 ~ 385g / m ~ (-1) ~ (-2) ~ (-1). The forest leaf litter is about 70.2001C / 2006 and 1032 Tg / 12, respectively, which shows an obvious increasing trend, and the annual litter amount of the temperate deciduous broad-leaved forest in Northeast China is 801865 and 1032 Tg, respectively, in the range of 636.2 g / m ~ (-1) ~ (-1) ~ (-1) ~ (-2) ~ (-1). The annual forest coverage rate based on remote sensing image interpretation was 18% and 24%, respectively, showing an increasing trend. The rapid increase of plantation area and the growth of forest have greatly affected the amount of forest litter and its dynamic changes, and then have an important impact on the material cycle of forest ecosystem.
【作者單位】： 上海交通大學(xué)農(nóng)業(yè)與生物學(xué)院/低碳農(nóng)業(yè)研究中心;農(nóng)業(yè)部都市農(nóng)業(yè)(南方)重點實驗室;國家林業(yè)局上海城市森林生態(tài)系統(tǒng)國家定位觀測研究站;
【基金】：中國科學(xué)院戰(zhàn)略性先導(dǎo)科技專項(XDA0505020) 國家自然科學(xué)基金項目(71333010) 上海交通大學(xué)農(nóng)工交叉項目(Agri-X2015004)資助~~
【分類號】：S714

【相似文獻】

相關(guān)期刊論文 前1條

1 凌華;陳光水;陳志勤;;中國森林凋落量的影響因素[J];亞熱帶資源與環(huán)境學(xué)報;2009年04期

，

本文編號：1993430