發(fā)布時(shí)間：2018-06-18 05:20

  本文選題：水熱通量 + 大孔徑閃爍儀�。� 參考：《應(yīng)用生態(tài)學(xué)報(bào)》2017年01期

【摘要】：農(nóng)田水熱通量的變化特征以及氣候?qū)W足跡分析對(duì)加強(qiáng)區(qū)域氣候資源管理和提高紅壤地區(qū)水熱資源利用率有重要意義.利用低丘紅壤區(qū)的大孔徑閃爍儀和自動(dòng)氣象站數(shù)據(jù),在保證數(shù)據(jù)質(zhì)量的基礎(chǔ)上,詳細(xì)分析了低丘紅壤區(qū)農(nóng)田在非雨季、作物生長(zhǎng)旺期不同時(shí)間尺度水熱通量的變化特征和觀測(cè)通量的源區(qū)分布特征.結(jié)果表明:水熱通量的日變化呈單峰型,但與晴天相比較,多云天的日變化曲線波動(dòng)更為復(fù)雜;無論是旬尺度還是月尺度,8月的水熱通量整體上都大于9月,且凈輻射通量都更多地用于潛熱交換,但9月潛熱通量所占凈輻射比例相較于8月有所減少,感熱通量則相反;受氣象條件(尤其是風(fēng))、穩(wěn)定度和下墊面狀況影響,不同時(shí)間尺度的觀測(cè)通量源區(qū)特征不同;結(jié)合下墊面作物來看,不同時(shí)間尺度源區(qū)的通量貢獻(xiàn)來源也不同.
[Abstract]:The variation characteristics of farmland water and heat flux and the analysis of climatological footprint are of great significance for strengthening the management of regional climate resources and improving the utilization ratio of water and heat resources in red soil areas. Based on the data of large aperture scintillation instrument and automatic weather station in low hilly red soil region, on the basis of ensuring the data quality, the farmland in low hilly red soil region is analyzed in detail during the non-rainy season. The variation characteristics of water and heat flux and the distribution of observed flux in different time scales during the peak period of crop growth. The results show that the diurnal variation of water and heat flux is monomorphic, but the diurnal variation curve of cloudy days is more complex than that of sunny days, and the water and heat flux in August is larger than that in September, both on a ten-day scale and on a monthly scale. Moreover, the net radiation flux is mostly used for latent heat exchange, but the proportion of net radiation flux in September is lower than that in August, and the sensible heat flux is opposite, which is affected by meteorological conditions (especially wind, stability and underlying surface condition). The characteristics of observed flux sources are different in different time scales, and the sources of flux contribution are also different in different time scales combined with underlying surface crops.
【作者單位】： 氣象災(zāi)害預(yù)報(bào)預(yù)警與評(píng)估協(xié)同創(chuàng)新中心;江蘇省農(nóng)業(yè)氣象重點(diǎn)實(shí)驗(yàn)室;南京信息工程大學(xué)應(yīng)用氣象學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41575111;41175098) 第九批“六大人才高峰”高層次人才項(xiàng)目(NY-038)資助~~
【分類號(hào)】：S162

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