CAJ | 학술논문

以杭州市为例,采用物料衡算法测算了城市人类活动的释碳量,采用植被生物量法测算了城市遗留自然生态系统的固碳量。结果显示：杭州市及各区土地覆被呈现建设用地对耕地的显著捕获且上升速度较快;杭州市整体的碳收支水平处于赤字状态、收支比逐年降低,城市系统内部无法实现碳收支平衡;耕地与林地是杭州市两个最重要的固碳子系统。杭州市及各区的固碳损失主要是由于耕地向建设用地转化造成的。杭州市各区均处于碳赤字状态,缺口呈上升态势（上城区除外）,在空间上表现为“东—中—西”到“东—西—中”递减;碳赤字密度呈增长态势（下城区除外）,在空间上表现为“中—东—西”递减;杭州市及各区的经济发展对碳环境压力步入下行通道。
이항주시위례,채용물료형산법측산료성시인류활동적석탄량,채용식피생물량법측산료성시유류자연생태계통적고탄량。결과현시：항주시급각구토지복피정현건설용지대경지적현저포획차상승속도교쾌;항주시정체적탄수지수평처우적자상태、수지비축년강저,성시계통내부무법실현탄수지평형;경지여임지시항주시량개최중요적고탄자계통。항주시급각구적고탄손실주요시유우경지향건설용지전화조성적。항주시각구균처우탄적자상태,결구정상승태세（상성구제외）,재공간상표현위“동—중—서”도“동—서—중”체감;탄적자밀도정증장태세（하성구제외）,재공간상표현위“중—동—서”체감;항주시급각구적경제발전대탄배경압력보입하행통도。
Taking Hangzhou city for example, this essay applies two methods： one is material balance algorithm which is aimed to caleulate carbon emissions by human respiratory and fossil energy consumption, and the other is vegetation biomass method to calculate carbon fixation of the city ecosystem. The results show that： the land cover shows the trend that construction land has captured the farmland remarkably and the transformation speed still accelerates. The carbon budget is in the deficit and the balance of carbon could not be accomplished in Hangzhou City. Agriculture and forest are the most carbon fixation system of Hangzhou City, land cover changing from the agriculture to construction land is the main reason of carbon fixation loss of Hangzhou City and its districts. All the districts of Hangzhou City are in carbon deficit and the spatial pattern of it reduces progressively from east, west to middle. Per area carbon deficit is in state of rise except the Xiacheng District and the spatial pattern of it increases progressively from west, east to middle. Economic growth and CO2 emission is on a decoupling status of Hangzhou City and its Districts, and the carbon press on environment of economic growth declines.