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供給
 
  經濟學中的供給指的是生產者在一定時期內在各種可能的價格下愿意而且能夠提供出售的該商品的數量。這種供給是指有效供給,必須滿足兩個條件:生產者有出售的愿望和供應的能力。
 
  供(gong)(gong)給的范圍和水(shui)平取決于社(she)會(hui)生(sheng)(sheng)產力的發(fa)展水(shui)平,一(yi)切影響社(she)會(hui)生(sheng)(sheng)產總量(liang)(liang)的因(yin)素(su)也都影響供(gong)(gong)給量(liang)(liang);但(dan)是(shi)(shi),市場供(gong)(gong)給量(liang)(liang)不等(deng)于生(sheng)(sheng)產量(liang)(liang),因(yin)為(wei)生(sheng)(sheng)產量(liang)(liang)中(zhong)有(you)一(yi)部分用于生(sheng)(sheng)產者自己消(xiao)費,作為(wei)貯備或(huo)出口(kou),而供(gong)(gong)給量(liang)(liang)中(zhong)的一(yi)部分可以是(shi)(shi)進(jin)口(kou)商(shang)品(pin)或(huo)動用貯備商(shang)品(pin)。提(ti)供(gong)(gong)給市場的商(shang)品(pin),不僅具(ju)有(you)滿足人類需要(yao)的使(shi)用價(jia)值(zhi),而且(qie)具(ju)有(you)凝結著一(yi)定(ding)(ding)社(she)會(hui)必要(yao)勞動時(shi)間(jian)的價(jia)值(zhi)。因(yin)此,供(gong)(gong)給不單純(chun)是(shi)(shi)一(yi)種提(ti)供(gong)(gong)一(yi)定(ding)(ding)數量(liang)(liang)的特(te)定(ding)(ding)的使(shi)用價(jia)值(zhi)的行為(wei),而且(qie)還是(shi)(shi)實現一(yi)定(ding)(ding)價(jia)值(zhi)量(liang)(liang)的行為(wei)。
 
  在(zai)市場經(jing)濟(ji)中,供(gong)給(gei)(gei)是(shi)隨商品價格(ge)的(de)(de)變動(dong)而變動(dong)的(de)(de)。一(yi)個(ge)(ge)生產部(bu)門原(yuan)(yuan)材料(liao)價格(ge)的(de)(de)變動(dong),會(hui)決定(ding)這個(ge)(ge)部(bu)門對原(yuan)(yuan)材料(liao)的(de)(de)需求,從而決定(ding)這個(ge)(ge)部(bu)門的(de)(de)生產,最終影響(xiang)商品的(de)(de)供(gong)給(gei)(gei)。如果商品價格(ge)下跌,供(gong)給(gei)(gei)就(jiu)會(hui)減少;商品價格(ge)上漲,供(gong)給(gei)(gei)就(jiu)會(hui)增加,供(gong)給(gei)(gei)反映了一(yi)種交(jiao)換關(guan)系(xi)(xi)(xi),因而是(shi)社會(hui)生產關(guan)系(xi)(xi)(xi)的(de)(de)組成部(bu)分。資(zi)本主義制(zhi)度下的(de)(de)供(gong)給(gei)(gei),反映的(de)(de)是(shi)資(zi)本主義的(de)(de)剝削(xue)關(guan)系(xi)(xi)(xi),社會(hui)主義制(zhi)度下的(de)(de)供(gong)給(gei)(gei),體現的(de)(de)卻是(shi)廣大(da)勞動(dong)者在(zai)根本利益一(yi)致基礎上的(de)(de)互助合作關(guan)系(xi)(xi)(xi)。
 
  供給在微觀經濟學中占有很大的比重。影響供給數量的因素有:
 
  商品(pin)的(de)價格(ge):在影響某(mou)種(zhong)商品(pin)的(de)供(gong)給(gei)的(de)其(qi)他因(yin)素(如生產(chan)該種(zhong)商品(pin)生產(chan)要素的(de)價格(ge))既定不(bu)變的(de)條件下,商品(pin)的(de)價格(ge)如果越高,生產(chan)者(zhe)愿意(yi)供(gong)給(gei)的(de)產(chan)量當然(ran)會越高。
 
  其(qi)他商品(pin)的(de)價格:這里會引出替代品(pin)的(de)概念。
 
  生產(chan)技術和生產(chan)要素(su)的價格(ge):技術進步(bu)或由于任何原因引起的生產(chan)要素(su)價格(ge)下(xia)降,將由于單位產(chan)品的成(cheng)本下(xia)降而(er)使得與(yu)任一(yi)價格(ge)對應的供給(gei)量(liang)增加。
 
  政府(fu)的政策:對一種產(chan)品的課稅將會使賣(mai)價提(ti)高,在一定條件(jian)下會通過(guo)需求(qiu)的減(jian)少而使供給(gei)(gei)(gei)減(jian)少。反之,減(jian)低商品租稅負擔或政府(fu)給(gei)(gei)(gei)予(yu)補貼,會通過(guo)降低賣(mai)價刺激需求(qiu),從而引起供給(gei)(gei)(gei)增(zeng)加。
 
  企業對未來(lai)的預期:如果廠商對未來(lai)的經(jing)濟(ji)持(chi)樂觀態度,則會增加供給。如果廠商對未來(lai)的經(jing)濟(ji)持(chi)悲觀態度,則會減少供給。
 
  供(gong)(gong)給(gei)(gei)(gei)量的(de)(de)變(bian)動(dong)(dong)指的(de)(de)是在(zai)其他條件(jian)不變(bian)時,由某商品(pin)的(de)(de)價格變(bian)動(dong)(dong)所(suo)引起的(de)(de)該(gai)(gai)商品(pin)供(gong)(gong)給(gei)(gei)(gei)數(shu)量的(de)(de)變(bian)動(dong)(dong)。在(zai)數(shu)學(xue)圖形中(zhong),這種變(bian)動(dong)(dong)表現(xian)為同(tong)一既定的(de)(de)供(gong)(gong)給(gei)(gei)(gei)曲線上點的(de)(de)運動(dong)(dong)。而(er)供(gong)(gong)給(gei)(gei)(gei)的(de)(de)變(bian)動(dong)(dong)指的(de)(de)是在(zai)某商品(pin)價格不變(bian)的(de)(de)條件(jian)下,由于(yu)其他因素變(bian)動(dong)(dong)所(suo)引起的(de)(de)該(gai)(gai)商品(pin)的(de)(de)供(gong)(gong)給(gei)(gei)(gei)數(shu)量的(de)(de)變(bian)動(dong)(dong),表現(xian)為供(gong)(gong)給(gei)(gei)(gei)曲線的(de)(de)位置發(fa)生移動(dong)(dong)。
 
  供給(gei)的變(bian)動(dong)也會引起均衡價格(ge)的變(bian)化(hua),供給(gei)變(bian)化(hua)的后果為:當替代品(pin)(pin)價格(ge)下降、互補(bu)品(pin)(pin)價格(ge)上升、預期商品(pin)(pin)價格(ge)上漲(zhang)、技術水平(ping)進步時,供給(gei)曲線(xian)向右平(ping)行(xing)(xing)移動(dong);若上述因素發生(sheng)引起供給(gei)數量減少(shao)的變(bian)動(dong),則供給(gei)曲線(xian)向左平(ping)行(xing)(xing)移動(dong)。
 
  在其他條件不變的情(qing)況(kuang)下,一(yi)般而(er)言,隨著(zhu)商(shang)品價格的升高,生產(chan)者愿意(yi)并且能夠(gou)提(ti)供(gong)的商(shang)品數(shu)量增加;相反,隨著(zhu)商(shang)品價格的降低,生產(chan)者愿意(yi)并且能夠(gou)提(ti)供(gong)的商(shang)品數(shu)量減少。也就(jiu)是生產(chan)者的供(gong)給量與商(shang)品價格之間呈(cheng)同方向變動,像這樣的一(yi)個規律(lv)我們都稱之為供(gong)給規律(lv)。
搜索關鍵字"供給",一共有5個結果
供給的變動與供給量變動

在微觀(guan)經濟學中,供(gong)(gong)(gong)給變(bian)(bian)動(dong)(dong)(dong)是(shi)(shi)指除(chu)了商品(pin)(pin)本(ben)身(shen)價格(ge)(ge)以(yi)外(wai)的(de)(de)(de)其(qi)他(ta)(ta)影(ying)響(xiang)(xiang)供(gong)(gong)(gong)給量的(de)(de)(de)因(yin)(yin)素(su)變(bian)(bian)動(dong)(dong)(dong)引起的(de)(de)(de)該商品(pin)(pin)供(gong)(gong)(gong)給量的(de)(de)(de)變(bian)(bian)動(dong)(dong)(dong),如廠商的(de)(de)(de)生產成本(ben)、生產的(de)(de)(de)技(ji)術水平(ping)、其(qi)他(ta)(ta)商品(pin)(pin)的(de)(de)(de)價格(ge)(ge)等因(yin)(yin)素(su)變(bian)(bian)動(dong)(dong)(dong)引起的(de)(de)(de)該商品(pin)(pin)供(gong)(gong)(gong)給量的(de)(de)(de)變(bian)(bian)動(dong)(dong)(dong)。在供(gong)(gong)(gong)給曲線(xian)上(shang),供(gong)(gong)(gong)給變(bian)(bian)動(dong)(dong)(dong)反映為整(zheng)個供(gong)(gong)(gong)給曲線(xian)的(de)(de)(de)移動(dong)(dong)(dong)。也就是(shi)(shi)說,一條供(gong)(gong)(gong)給曲線(xian)從一個位置移動(dong)(dong)(dong)到另一個位置是(shi)(shi)供(gong)(gong)(gong)給變(bian)(bian)動(dong)(dong)(dong)。它表明在同(tong)一個價格(ge)(ge)水平(ping)上(shang),當除(chu)商品(pin)(pin)本(ben)身(shen)價格(ge)(ge)外(wai)的(de)(de)(de)其(qi)他(ta)(ta)影(ying)響(xiang)(xiang)供(gong)(gong)(gong)給的(de)(de)(de)因(yin)(yin)素(su)發生變(bian)(bian)化時商品(pin)(pin)的(de)(de)(de)供(gong)(gong)(gong)給量變(bian)(bian)動(dong)(dong)(dong)。

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什么是貨幣供給

貨(huo)(huo)幣供(gong)(gong)(gong)給(moneysupply)亦稱(cheng)貨(huo)(huo)幣供(gong)(gong)(gong)應(ying),是指(zhi)某(mou)一國或貨(huo)(huo)幣區的(de)(de)銀(yin)行(xing)系統(tong)向經(jing)濟體中投入、創造(zao)、擴(kuo)張(或收(shou)縮)貨(huo)(huo)幣的(de)(de)金融(rong)過(guo)程。貨(huo)(huo)幣供(gong)(gong)(gong)給指(zhi)一個(ge)國家(jia)在(zai)某(mou)一特(te)定(ding)時(shi)點上由(you)家(jia)庭和廠(chang)商持(chi)有的(de)(de)政府(fu)和銀(yin)行(xing)系統(tong)以外的(de)(de)貨(huo)(huo)幣總和。貨(huo)(huo)幣供(gong)(gong)(gong)給有狹義(yi)、廣義(yi)之分。從(cong)狹義(yi)上說,它由(you)流(liu)通中的(de)(de)紙幣、鑄幣和活期(qi)存(cun)款(kuan)構成,銀(yin)行(xing)的(de)(de)活期(qi)存(cun)款(kuan)是貨(huo)(huo)幣供(gong)(gong)(gong)給的(de)(de)一個(ge)重要組成部(bu)分。

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供給學派

供(gong)(gong)(gong)(gong)給(gei)(gei)學派(pai)(pai),也稱供(gong)(gong)(gong)(gong)給(gei)(gei)學派(pai)(pai)經(jing)濟(ji)(ji)學(Supply-sideeconomics)是(shi)20世紀七十(shi)年代在美國(guo)興起的一(yi)個(ge)(ge)凱恩(en)斯主(zhu)義相對立的經(jing)濟(ji)(ji)學流派(pai)(pai),屬于經(jing)濟(ji)(ji)自由主(zhu)義思潮,因為(wei)(wei)強調(diao)生產和供(gong)(gong)(gong)(gong)給(gei)(gei),因此稱為(wei)(wei)供(gong)(gong)(gong)(gong)給(gei)(gei)經(jing)濟(ji)(ji)學。主(zhu)要代表人物有蒙(meng)代爾、拉弗、費爾德(de)斯坦等。供(gong)(gong)(gong)(gong)給(gei)(gei)學派(pai)(pai)沒有一(yi)個(ge)(ge)完(wan)整(zheng)的理(li)論體(ti)系,某些方面觀點也存在分(fen)歧,但(dan)關(guan)注供(gong)(gong)(gong)(gong)給(gei)(gei)是(shi)該(gai)學派(pai)(pai)的重要特(te)點。

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什么是供給彈性

供(gong)(gong)給(gei)彈性又(you)稱為供(gong)(gong)給(gei)價(jia)格彈性是指供(gong)(gong)給(gei)量(liang)相對(dui)價(jia)格變(bian)化作出的反(fan)應(ying)(ying)程度(du)(du),即某種商品(pin)價(jia)格上升或(huo)下降百分(fen)之(zhi)一(yi)時,對(dui)該商品(pin)供(gong)(gong)給(gei)量(liang)增加(jia)或(huo)減少(shao)的百分(fen)比。供(gong)(gong)給(gei)量(liang)變(bian)化率對(dui)商品(pin)自身(shen)價(jia)格變(bian)化率反(fan)應(ying)(ying)程度(du)(du)的一(yi)種度(du)(du)量(liang),等于供(gong)(gong)給(gei)變(bian)化率除以價(jia)格變(bian)化率。

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什么是供給曲線

供(gong)(gong)(gong)給(gei)是(shi)指個(ge)(ge)別廠商(shang)(shang)(shang)(shang)在(zai)一(yi)定時間(jian)(jian)內,在(zai)一(yi)定條件下,對某(mou)一(yi)商(shang)(shang)(shang)(shang)品(pin)(pin)愿意并且有商(shang)(shang)(shang)(shang)品(pin)(pin)出售(shou)的(de)(de)數量。兩(liang)個(ge)(ge)條件:一(yi)是(shi)廠商(shang)(shang)(shang)(shang)愿意出售(shou);二是(shi)廠商(shang)(shang)(shang)(shang)有商(shang)(shang)(shang)(shang)品(pin)(pin)出售(shou),二者缺一(yi)不(bu)可。供(gong)(gong)(gong)給(gei)曲(qu)線(supplycurve)是(shi)以幾(ji)何(he)圖形表示商(shang)(shang)(shang)(shang)品(pin)(pin)的(de)(de)價格和(he)供(gong)(gong)(gong)給(gei)量之間(jian)(jian)的(de)(de)函(han)數關系,供(gong)(gong)(gong)給(gei)曲(qu)線是(shi)根據供(gong)(gong)(gong)給(gei)表中的(de)(de)商(shang)(shang)(shang)(shang)品(pin)(pin)的(de)(de)價格—供(gong)(gong)(gong)給(gei)量組合在(zai)平面坐(zuo)標圖上所繪制的(de)(de)一(yi)條曲(qu)線。

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