CAJ | 학술논문

采用遥感与地理信息技术相结合的方法研究了广东省河源市在时间和空间两方面的森林资源动态变化.时间上,1985-2004年近20年的变化结果表明,林业用地面积减少761.1×103 hm2;有林地面积减少171.2×103 hm2;森林覆盖率提高31.7个百分点;无林地面积减少600.9×103hm2;森林蓄积量增加2 708.4×104m3;消耗量小于生长量.同时力求找到动态变化的原因,并预测其发展方向.空间上,有林地主要分布在河源市的北部和邻近边界山地地区,灌木林与疏林地分布在中部地区,无林地主要集中在城区中心地带.
채용요감여지리신식기술상결합적방법연구료광동성하원시재시간화공간량방면적삼림자원동태변화.시간상,1985-2004년근20년적변화결과표명,임업용지면적감소761.1×103 hm2;유임지면적감소171.2×103 hm2;삼림복개솔제고31.7개백분점;무임지면적감소600.9×103hm2;삼림축적량증가2 708.4×104m3;소모량소우생장량.동시력구조도동태변화적원인,병예측기발전방향.공간상,유임지주요분포재하원시적북부화린근변계산지지구,관목림여소임지분포재중부지구,무임지주요집중재성구중심지대.
The paper aimed to study dynamic changes of forest resources based on RS and GIS at time and space aspects.From 1985 to 2004, the changes of nearly 20 years showed that forest land and afforested land areas had decreased 761.1×103 hm2and 171.2×103 hm2respectively; forest coverage rates had increased 31.7%; non-forest land areas has decreased 600.9×103 hm2; forest stock volume had grown 2 708.4×104 m3; consumption was less than growth.At the same time the paper tried to find the reasons of dynamic changes, and predicated the development direction.In space, afforested land had been distributed on the north part of Heyuan and neighboring boundary mountain area, shrub and sparse forest land had been distributed on middle area, non-forest land had been concentrated on urban heartland.