發(fā)布時(shí)間：2018-06-03 10:31

  本文選題：人工草地-農(nóng)田 + 界面影響域��； 參考：《草地學(xué)報(bào)》2017年02期

【摘要】：通過(guò)對(duì)貴州人工草地-農(nóng)田界面表層土壤(0~20cm)的調(diào)查采樣和室內(nèi)分析,明確界面土壤水分和溫度的空間變化特征,利用水分和溫度雙因素耦合來(lái)判定界面影響域,探討其季節(jié)性動(dòng)態(tài)變化過(guò)程。結(jié)果表明:人工草地土壤水分四季分別為60.7%±0.31,23.6%±0.20,19.7%±0.20和70.4%±0.19,均高于農(nóng)田的34.5%±0.52,11.8%±0.23,10.0%±0.19和64.1%±0.13;土壤溫度空間變化表現(xiàn)為夏秋季節(jié)草地低于農(nóng)田,冬春季節(jié)草地高于農(nóng)田;貴州農(nóng)田-人工草地界面四季土壤水熱耦合影響域處于一個(gè)動(dòng)態(tài)變化的過(guò)程,呈現(xiàn)為"窄-寬-窄"的規(guī)律;四季界面影響域?qū)挾确謩e為25,28,34和29m。利用雙因素耦合判定界面影響域能夠在一定程度上避免單因素判定造成的"偏向性"結(jié)果。
[Abstract]:The spatial variation characteristics of soil moisture and temperature were determined by sampling and indoor analysis on the surface soil of the artificial grassland and farmland interface in Guizhou Province, and the interfacial influence area was determined by the coupling of water and temperature. The seasonal dynamic change process is discussed. The results showed that the soil moisture content of artificial grassland was 60.7% 鹵0.31 23.6% 鹵0.20% 鹵0.20% 鹵0.20 鹵0.19 in four seasons, which was higher than that of farmland (34.5% 鹵0.52% 鹵0.232% 鹵10.0% 鹵0.19 and 64.1% 鹵0.13), and the spatial variation of soil temperature was lower in summer and autumn season than in winter and spring season. The interaction between soil water and heat at the interface of farmland and artificial grassland in Guizhou Province is in a dynamic process of "narrow-wide-narrow", and the width of the interface of four seasons is 25 ~ 2834 and 29 m, respectively. To a certain extent, the "bias" result caused by single factor decision can be avoided by using two-factor coupling to determine the influence region of the interface.
【作者單位】： 貴州大學(xué)動(dòng)物科學(xué)學(xué)院;貴州省草地技術(shù)試驗(yàn)推廣站;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31560670) 貴州省科技廳項(xiàng)目(黔科合NY字[2012]3011號(hào)) 貴州大學(xué)研究生創(chuàng)新基金項(xiàng)目(研農(nóng)2016020)資助
【分類(lèi)號(hào)】：S812.2

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