华东森林经理
華東森林經理
화동삼림경리
EAST CHINA FOREST MANAGEMENT
2014年
4期
51-56
,共6页
洪奕丰%张震%朱磊%王小明
洪奕豐%張震%硃磊%王小明
홍혁봉%장진%주뢰%왕소명
空间优化配置%热带气旋风险%沿海防护林%多目标逐步宽容约束模型
空間優化配置%熱帶氣鏇風險%沿海防護林%多目標逐步寬容約束模型
공간우화배치%열대기선풍험%연해방호림%다목표축보관용약속모형
Spatial optimization allocation%Tropical cyclone risk%Coastal shelterbelt forest%Gradual Easy Constraint Method
以Landsat TM影像为信息源，通过选取热带气旋频数、人口密度、耕地面积密度、地均GDP和人均第三产业产值五个指标，采用层次分析法和加权综合评价法，评估浙东热带气旋的综合风险；并以此为基础，引入多目标逐步宽容约束模型，实施浙东沿海防护林的空间优化配置。研究结果发现：①沿海防护林面积明显增加，增幅达5.4%，森林覆盖率由48.7%增至51.3%；②森林结构趋于合理，针叶林、阔叶林、混交林和灌木林面积比例分别由优化前的64.77%、19.84%、8.36%、7.03%调整为40.30%、37.34%、18.06%、4.30%，有效解决了针叶林比重过大的问题；③土地利用服务价值各指标均有明显增加，生态、社会和经济效益增幅分别为3.7%、2.4%和5.5%；④实现了分区、分级、分目标的防护林优化配置，生态效益各指标均随热带气旋综合风险的增加呈明显的上升趋势，社会、经济效益正好相反。
以Landsat TM影像為信息源，通過選取熱帶氣鏇頻數、人口密度、耕地麵積密度、地均GDP和人均第三產業產值五箇指標，採用層次分析法和加權綜閤評價法，評估浙東熱帶氣鏇的綜閤風險；併以此為基礎，引入多目標逐步寬容約束模型，實施浙東沿海防護林的空間優化配置。研究結果髮現：①沿海防護林麵積明顯增加，增幅達5.4%，森林覆蓋率由48.7%增至51.3%；②森林結構趨于閤理，針葉林、闊葉林、混交林和灌木林麵積比例分彆由優化前的64.77%、19.84%、8.36%、7.03%調整為40.30%、37.34%、18.06%、4.30%，有效解決瞭針葉林比重過大的問題；③土地利用服務價值各指標均有明顯增加，生態、社會和經濟效益增幅分彆為3.7%、2.4%和5.5%；④實現瞭分區、分級、分目標的防護林優化配置，生態效益各指標均隨熱帶氣鏇綜閤風險的增加呈明顯的上升趨勢，社會、經濟效益正好相反。
이Landsat TM영상위신식원，통과선취열대기선빈수、인구밀도、경지면적밀도、지균GDP화인균제삼산업산치오개지표，채용층차분석법화가권종합평개법，평고절동열대기선적종합풍험；병이차위기출，인입다목표축보관용약속모형，실시절동연해방호림적공간우화배치。연구결과발현：①연해방호림면적명현증가，증폭체5.4%，삼림복개솔유48.7%증지51.3%；②삼림결구추우합리，침협림、활협림、혼교림화관목림면적비례분별유우화전적64.77%、19.84%、8.36%、7.03%조정위40.30%、37.34%、18.06%、4.30%，유효해결료침협림비중과대적문제；③토지이용복무개치각지표균유명현증가，생태、사회화경제효익증폭분별위3.7%、2.4%화5.5%；④실현료분구、분급、분목표적방호림우화배치，생태효익각지표균수열대기선종합풍험적증가정명현적상승추세，사회、경제효익정호상반。
As the important ecological barriers, Coastal shelter forest plays a key role in the aspect of soil and water conservation, wind prevention, sand-fixation and regional ecological security. Based on the 2005 Landsat TM images, by using the method of analytic hierarchy process and weighted comprehensive evaluation, five indices including frequency of tropical cyclone, population density, and density of arable land, real GDP and the per capita output value of the tertiary industry were selected to carry out the tropical cyclone risk assessment. Meanwhile, gradual easy constraint method was adopted to build a multi-objective programming model to make the spatial optimum allocation of coastal shelterbelt forest in Eastern Zhejiang province. The main conclusions are as follows: ① The area of coastal shelterbelt forest increased significantly with an increase of 5.4%, and the forest coverage rate increased form 48.70%to 51.30%; ②The forest structure would be more reasonable, and the proportion of coniferous, broadleaf forest, mixed forest and shrub changed from 64.77%、19.84%、8.36%、7.03%to 40.30%、37.34%、18.06%、4.30%, which solve the problem of large-proportion coniferous forest effectively; ③ The whole index of land-use service values increased substantially, the ecological, social and economic benefits increased by3.7%, 2.4% and 5.5%, respectively; ④ Optimization was realized according to different Risk area, different grade and different objective. For tropical cyclone risk, economic benefit is positive related apparently, social and economic benefits are just the opposite.
