华中师范大学学报（自然科学版）
華中師範大學學報（自然科學版）
화중사범대학학보（자연과학판）
JOURNAL OF CENTRAL CHINA NORMAL UNIVERSITY(NATURAL SCIENCES)
2009年
4期
677-682
,共6页
人口重心%环境变化%转移路径%江河源区%果洛州
人口重心%環境變化%轉移路徑%江河源區%果洛州
인구중심%배경변화%전이로경%강하원구%과락주
population gravity center%environmental change%shift route%the source regions of Yangtze and Yellow Rivers%Guoluo State
基于冰冻圈背景,从人口重心变迁的角度人手,运用空间均值地图演示的方法,以黄河源果洛州近56年以来"区域人口重心"的转移问题为例,探讨江河源区人口重心变迁与生态环境因素之间的关系,得出以下结论:(1)果洛州人口重心有先向东北后向东南移动的趋势.(2)1952年～2007年间果洛州人口重心迁移大体呈"e"字型态势变化:1952年～1969年间,轨迹由西向东移动,1969年～2007年间由南向北变化.总体上有向东北方向移动的趋势.(3)气候变化通过气温和降水影响牧草的生产力;冻土层通过对土层水分的调节影响牧草的生产力;NPP反映草地生态系统的生产力,而江河源区以草地生态系统为主体,草场植被生产力影响载畜量,进而影响到牧民的流动.
基于冰凍圈揹景,從人口重心變遷的角度人手,運用空間均值地圖縯示的方法,以黃河源果洛州近56年以來"區域人口重心"的轉移問題為例,探討江河源區人口重心變遷與生態環境因素之間的關繫,得齣以下結論:(1)果洛州人口重心有先嚮東北後嚮東南移動的趨勢.(2)1952年～2007年間果洛州人口重心遷移大體呈"e"字型態勢變化:1952年～1969年間,軌跡由西嚮東移動,1969年～2007年間由南嚮北變化.總體上有嚮東北方嚮移動的趨勢.(3)氣候變化通過氣溫和降水影響牧草的生產力;凍土層通過對土層水分的調節影響牧草的生產力;NPP反映草地生態繫統的生產力,而江河源區以草地生態繫統為主體,草場植被生產力影響載畜量,進而影響到牧民的流動.
기우빙동권배경,종인구중심변천적각도인수,운용공간균치지도연시적방법,이황하원과락주근56년이래"구역인구중심"적전이문제위례,탐토강하원구인구중심변천여생태배경인소지간적관계,득출이하결론:(1)과락주인구중심유선향동북후향동남이동적추세.(2)1952년～2007년간과락주인구중심천이대체정"e"자형태세변화:1952년～1969년간,궤적유서향동이동,1969년～2007년간유남향북변화.총체상유향동북방향이동적추세.(3)기후변화통과기온화강수영향목초적생산력;동토층통과대토층수분적조절영향목초적생산력;NPP반영초지생태계통적생산력,이강하원구이초지생태계통위주체,초장식피생산력영향재축량,진이영향도목민적류동.
The source regions of Yangtze and Yellow Rivers are extremely important parts of cryophere in China. Its population spatial distribution is not only related with the social economy factors also has the important relations with the ecological environment. This article based on permafrost environment, began with the population gravity center, a statistic in geo-statistics,spatial mean,was used as a means of spatial equality measurement, since by Yellow River source Guoluo near 56 years "region population gravity center" as an example, discussed the relationship between the source regions of Yangtze and Yellow Rivers population gravity center and the ecological environment factors. The results showed: (1) As a whole,it has a trend to move to the northeast. (2) Between 1952 - 2007, the tendency chart of center of gravity of population in Guoluo State changes as the font of "e"on the whole: between 1952 -1969, the track moves from west to east, between 1969-2007, the center of gravity of population changes from south to north. (3) Through the temperature and precipitation, climate change affects productivity of pasture; through regulating soil moisture, the permafrost impacts on the productivity of pasture; NPP reflects the productivity of grassland ecosystems, while grassland ecosystem is the main part of the source regions of Yangtze and Yellow Rivers, it impacts on stocking rate, then affects herdsman's flow.
