湖北林业科技
湖北林業科技
호북임업과기
HUBEI FORESTRY SCIENCE AND TECHNOLOGY
2014年
6期
38-43
,共6页
生态敏感性%GIS%林地%清城区
生態敏感性%GIS%林地%清城區
생태민감성%GIS%임지%청성구
ecological sensitivity%GIS%forest land%Qingcheng district
本文结合广东省清远市清城区林地利用保护规划,利用数字化的地形数据和森林资源调查资料,在 GIS技术的支持下,选取并分析高程、坡度、坡向、植被覆盖类型、植被覆盖度、水域6个生态敏感性评价因子,采用模糊数学方法确定各评价因子的生态敏感性程度,对清城区林地生态敏感性进行评价。研究结果表明:研究区内各生态敏感性区面积比分别为高度敏感区(18?5%)、中度敏感区(11?1%)、低度敏感区(70?4%),前两者占总面积的29?6%,低度敏感区占到70?4%且分布集中连片,表明研究区抗干扰能力强,不易出现植被退化、大规模森林景观破坏、水土流失等生态环境问题。
本文結閤廣東省清遠市清城區林地利用保護規劃,利用數字化的地形數據和森林資源調查資料,在 GIS技術的支持下,選取併分析高程、坡度、坡嚮、植被覆蓋類型、植被覆蓋度、水域6箇生態敏感性評價因子,採用模糊數學方法確定各評價因子的生態敏感性程度,對清城區林地生態敏感性進行評價。研究結果錶明:研究區內各生態敏感性區麵積比分彆為高度敏感區(18?5%)、中度敏感區(11?1%)、低度敏感區(70?4%),前兩者佔總麵積的29?6%,低度敏感區佔到70?4%且分佈集中連片,錶明研究區抗榦擾能力彊,不易齣現植被退化、大規模森林景觀破壞、水土流失等生態環境問題。
본문결합광동성청원시청성구임지이용보호규화,이용수자화적지형수거화삼림자원조사자료,재 GIS기술적지지하,선취병분석고정、파도、파향、식피복개류형、식피복개도、수역6개생태민감성평개인자,채용모호수학방법학정각평개인자적생태민감성정도,대청성구임지생태민감성진행평개。연구결과표명:연구구내각생태민감성구면적비분별위고도민감구(18?5%)、중도민감구(11?1%)、저도민감구(70?4%),전량자점총면적적29?6%,저도민감구점도70?4%차분포집중련편,표명연구구항간우능력강,불역출현식피퇴화、대규모삼림경관파배、수토류실등생태배경문제。
We Combined with forest utilization and protection planning in Qingyuan City,Guangdong Province and in the support of GIS technology and determinating the ecological sensitivity degree of each evaluating factor by the fuzzy mathematics method and selecting and analyzing of the six ecological sensitivity evaluation factors,including vegetation coverage,aspect,slope,elevation,water buffer,and vegetation cover type,based on the digital terrain data and the forG est resources survey data,We evaluated the ecological sensitivity of Qingcheng district.The results showed that the highly sensitive areas accounted for 1 8 .5% of the total area and the moderate sensitive area accounted for 1 1 .1% and the low sensitive area accounted for 70.4%.That is to say,the first two sensitive regions accounted for 29.6% of the total area and the low sensitive areas,which distributed continuously,accounted for 70.4%.It indicated that the studied area had the strong anti-interference capacity and it was difficult for the vegetation degradation,massive destruction of forest landscapes,soil erosion and other environmental problems to occur in this area.