东北林业大学学报
東北林業大學學報
동북임업대학학보
JOURNAL OF NORTHEAST FORESTRY UNIVERSITY
2014年
12期
43-49
,共7页
王致远%赵广东%王兵%邓宗富%夏晨%罗嘉东%王财英
王緻遠%趙廣東%王兵%鄧宗富%夏晨%囉嘉東%王財英
왕치원%조엄동%왕병%산종부%하신%라가동%왕재영
丝栗栲%苦槠%青冈%叶片功能性状%增温%施氮
絲慄栲%苦櫧%青岡%葉片功能性狀%增溫%施氮
사률고%고저%청강%협편공능성상%증온%시담
Castanopsis fargesii%Castanopsis sclerophylla%Cyclobalanopsis glauca%Leaf functional traits%Warming%Nitrogen addition
通过MSR－2420红外辐射增温装置和人工氮输入，设置出增温和不同施氮梯度，研究了中亚热带常绿阔叶林的主要优势树种丝栗栲（Castanopsis fargesii）、苦槠（C．sclerophylla）和青冈（Cyclobalanopsis glauca）幼苗叶片干质量面积、叶氮质量分数、叶氮面积质量和叶片干质量与饱和鲜质量比4个功能性状指标对增温、施氮及其交互作用的响应。结果表明：增温导致增温区平均空气温度增加了1．22℃，平均空气相对湿度降低了7．07％，5、20 cm处平均土壤温度分别增加了1．05、0．65℃，土壤平均体积含水量分别降低了7．02％、5．52％。增温导致丝栗栲、苦槠和青冈幼苗叶片干质量面积、叶氮质量分数降低，干质量与饱和鲜质量比增加。施氮引起丝栗栲、苦槠和青冈幼苗叶片叶氮质量分数、叶氮面积质量和干质量与饱和鲜质量比增加，干质量面积降低。3种植物干质量面积、叶氮质量分数、叶氮面积质量和干质量与饱和鲜质量比对增温和施氮交互作用的响应趋势不同。增温和施氮交互作用对丝栗栲叶片干质量面积的影响程度大于单独增温和单独施氮，对苦槠叶片干质量面积的影响与单独施氮基本一致，而对青冈叶片干质量面积则没有明显影响。3种植物叶片叶氮质量分数对增温和施氮交互作用、单独施氮的响应基本一致。苦槠叶片叶氮面积质量对增温和施氮交互作用、单独施氮的响应相似，丝栗栲表现为交互作用大于单独施氮，并且WN2大于WN1，青冈则是交互作用小于单独施氮，并且WN2大于WN1。增温和施氮交互作用均导致3种植物叶片的干质量与饱和鲜质量比增加。
通過MSR－2420紅外輻射增溫裝置和人工氮輸入，設置齣增溫和不同施氮梯度，研究瞭中亞熱帶常綠闊葉林的主要優勢樹種絲慄栲（Castanopsis fargesii）、苦櫧（C．sclerophylla）和青岡（Cyclobalanopsis glauca）幼苗葉片榦質量麵積、葉氮質量分數、葉氮麵積質量和葉片榦質量與飽和鮮質量比4箇功能性狀指標對增溫、施氮及其交互作用的響應。結果錶明：增溫導緻增溫區平均空氣溫度增加瞭1．22℃，平均空氣相對濕度降低瞭7．07％，5、20 cm處平均土壤溫度分彆增加瞭1．05、0．65℃，土壤平均體積含水量分彆降低瞭7．02％、5．52％。增溫導緻絲慄栲、苦櫧和青岡幼苗葉片榦質量麵積、葉氮質量分數降低，榦質量與飽和鮮質量比增加。施氮引起絲慄栲、苦櫧和青岡幼苗葉片葉氮質量分數、葉氮麵積質量和榦質量與飽和鮮質量比增加，榦質量麵積降低。3種植物榦質量麵積、葉氮質量分數、葉氮麵積質量和榦質量與飽和鮮質量比對增溫和施氮交互作用的響應趨勢不同。增溫和施氮交互作用對絲慄栲葉片榦質量麵積的影響程度大于單獨增溫和單獨施氮，對苦櫧葉片榦質量麵積的影響與單獨施氮基本一緻，而對青岡葉片榦質量麵積則沒有明顯影響。3種植物葉片葉氮質量分數對增溫和施氮交互作用、單獨施氮的響應基本一緻。苦櫧葉片葉氮麵積質量對增溫和施氮交互作用、單獨施氮的響應相似，絲慄栲錶現為交互作用大于單獨施氮，併且WN2大于WN1，青岡則是交互作用小于單獨施氮，併且WN2大于WN1。增溫和施氮交互作用均導緻3種植物葉片的榦質量與飽和鮮質量比增加。
통과MSR－2420홍외복사증온장치화인공담수입，설치출증온화불동시담제도，연구료중아열대상록활협림적주요우세수충사률고（Castanopsis fargesii）、고저（C．sclerophylla）화청강（Cyclobalanopsis glauca）유묘협편간질량면적、협담질량분수、협담면적질량화협편간질량여포화선질량비4개공능성상지표대증온、시담급기교호작용적향응。결과표명：증온도치증온구평균공기온도증가료1．22℃，평균공기상대습도강저료7．07％，5、20 cm처평균토양온도분별증가료1．05、0．65℃，토양평균체적함수량분별강저료7．02％、5．52％。증온도치사률고、고저화청강유묘협편간질량면적、협담질량분수강저，간질량여포화선질량비증가。시담인기사률고、고저화청강유묘협편협담질량분수、협담면적질량화간질량여포화선질량비증가，간질량면적강저。3충식물간질량면적、협담질량분수、협담면적질량화간질량여포화선질량비대증온화시담교호작용적향응추세불동。증온화시담교호작용대사률고협편간질량면적적영향정도대우단독증온화단독시담，대고저협편간질량면적적영향여단독시담기본일치，이대청강협편간질량면적칙몰유명현영향。3충식물협편협담질량분수대증온화시담교호작용、단독시담적향응기본일치。고저협편협담면적질량대증온화시담교호작용、단독시담적향응상사，사률고표현위교호작용대우단독시담，병차WN2대우WN1，청강칙시교호작용소우단독시담，병차WN2대우WN1。증온화시담교호작용균도치3충식물협편적간질량여포화선질량비증가。
Through MSR-2420 infrared radiation warming devices and nitrogen fertilizer addition , we set up warming and differ-ent nitrogen fertilizer application level to investigate the effects of the warming , nitrogen fertilizer and their interaction on specific leaf area , leaf nitrogen content per unit mass , leaf nitrogen content per unit area and leaf dry matter content of Castanopsis fargesii, Castanopsis sclerophylla and Cyclobalanopsis glauca seedings, the dominant species of evergreen broad-leaved forest in the mid-subtropical zone.From January 2012 to January 2013, the mean air temperature, the mean soil temperature at 5 cm and 20 cm depths were enhanced by 1.22℃, 1.05℃and 0.65℃.However, the mean air relative humidity, the mean soil volume water content at 5 cm and 20 cm depths were 7.07%, 7.02%and 5.52%lower than that in the control area , respectively .In the condition of warming , the leaf dry matter content was higher than that of the control area, while the specific leaf area and leaf nitrogen content per unit mass were opposite .The nitrogen addition led to the in-crease of leaf nitrogen content per unit mass , leaf nitrogen content per unit area and leaf dry matter content and the de-crease of specific leaf area .The specific leaf area , leaf nitrogen content per unit mass , leaf nitrogen content per unit area and leaf dry matter content responses of Castanopsis fargesii, Castanopsis sclerophylla and Cyclobalanopsis glauca to war-ming and nitrogen interaction were different .The independent effect of warming and nitrogen on the specific leaf area of Castanopsis fargesii was lower than that of their interactions , and the interactions on the specific leaf area of Castanopsis sclerophylla were similar to the independent nitrogen, but there was no significant effect on the specific leaf area of Castan-opsis fargesii.The response of three seedlings leaf nitrogen content per unit mass to warming and nitrogen was basically con -sistent irrespective of the effects of their independent and interactive .The independent and interactive effects of warming and nitrogen to the leaf nitrogen content per unit area of Castanopsis sclerophylla were similar.The effects of warming and nitrogen interaction to leaf nitrogen content per unit area of Castanopsis fargesii was higher than that of the independent ni-trogen, and the effect of WN1 was lower than that of WN2.For the corresponding results of Cyclobalanopsis glauca, war-ming and nitrogen interaction effect was lower than the independent nitrogen , and the effect of WN 2 was higher than that of WN1.The interaction of warming and nitrogen caused the leaf dry matter content rise for three seedling leaves .
