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第12期 吴守从等：应用遥测技术探讨台湾花莲地区土砂灾害集水区崩塌地的变迁 1509 表5寿丰溪集水区各期间崩塌地坡度分布面积及崩塌率 Table 5 Distribution of collapse area and collapse ratio to slope classification in the Hsoufong river basin 崩塌面积(CA)/km2,{崩塌率(CA/TCA)/%) 坡度/() 类别总面积 (TCA)/km2 1996 2002 2005 2007 <5 36.512 0.0032,{0.09} 0.0080,{0.22} 0.0080,{0.22 0.0064,{0.18} 515 5.3344 0.0544.{1.02} 0.0656,{1.23} 0.1024.{1.92} 0.0688.{1.29} 15-30 37.8640 0.7312,1.93} 0.6320,{1.67} 0.8976,{2.37} 0.9808,{2.59} 30-40 58.2448 2.2656.(3.89} 2.3552,{4.04} 2.8672,{4.92} 2.7600.{4.73} 40~-55 78.2144 5.6224.{7.19} 6.4752,{8.28} 7.4816,(9.57} 6.8928.{8.81} >55 28.6816 4.2016,{14.65} 4.5184,{15.75} 5.8576,{20.42} 5.1744,{18.04} 表6 秀姑峦溪集水区各期间崩塌地坡度分布面积及崩塌率 Table 6 Distribution of collapse area and collapse ratio to slope classification in the Siouguluan river basin 类别总面积 崩塌面积(CA)/km2,{崩塌率(CA/TCA)/%) 坡度/( (TCA)/km2 1996 2002 2005 2007 <5 138.3072 0.0064.{0.00} 0.0128.{0.01} 0.0384.{0.03} 0.0304,{0.02} 515 74.3200 0.1280,{0.17} 0.1856,{0.25} 0.2256,{0.30} 0.2512.{0.34} 15~30 150.8160 0.9648.{0.64} 0.8784.{0.58} 1.1440.{0.76} 1.3424,{0.89} 30-40 122.8560 0.7648,{0.62 0.8624.{0.70} 1.1696,{0.95} 1.3296,{1.08} 40-55 132.9472 0.6992.{0.53} 0.8768.{0.66} 1.4352,{1.08} 1.4912,{1.12} >55 30.9072 0.2160,{0.70} 0.2320,{0.75} 0.5856,{1.89 0.5856,{1.89} 表7 寿丰溪集水区各期间崩塌地坡向分布面积及崩塌率 Table 7 Distribution of collapse area and collapse ratio to aspect classification in the Hsoufong river basin 总崩塌面积 崩塌面积(CA)/km2,{崩塌率(CA/TCA)/%} 坡向 (TCA)/km2 1996 2002 2005 2007 东北 29.4496 1.7360.{5.89} 1.8912,{6.42} 2.2336,{7.58} 2.0720.{7.04} 东 33.0208 1.7744.{5.37} 2.1168.{6.41} 2.9392.{8.90} 2.2000.{6.66} 东南 28.7840 2.1344.(7.42} 2.6448.{9.19} 3.2784.{11.39} 2.5168.{8.74} 南 24.3136 1.4528.{5.98} 1.6608.{6.83} 2.1936,{9.02} 2.0080.{8.26} 西南 23.2880 0.7360.{3.16} 0.7616,{3.27} 1.1232,{4.82} 1.0960,{4.71} 西 27.1376 1.6128.5.94} 1.5952,{5.88} 1.8608,{6.86} 2.0560,{7.58} 西北 28.9696 2.0848.{7.20} 1.9584,{6.76} 2.0288.《7.00} 2.2704,{7.84) 必 20.4224 1.3696,6.71} 1.4384,{7.04} 1.5840,{7.76} 1.6944,{8.30} 表8秀姑峦溪集水区各期间崩塌地坡向分布面积及崩塌率 Table 8 Distribution of collapse area and collapse ratio to aspect classification in the Siouguluan river basin 总崩塌面积 崩塌面积(CA)/km2,{崩塌率(CA/TCA)/%) 坡向 (TCA)/km2 1996 2002 2005 2007 东北 82.5920 0.6240.{0.76} 0.7712,{0.93} 0.7472.{0.90} 0.8160.{0.99} 东 94.1456 0.5920.{0.63 0.6976.{0.74} 0.6016.{0.64} 0.7264,{0.77} 东南 88.6464 0.7072.{0.80} 0.5440.{0.61} 0.7008.{0.79} 0.8224.{0.93} 南 61.3312 0.2784,(0.45} 0.2208.{0.36} 0.3088.{0.50} 0.4032,{0.66) 西南 59.1760 0.1280.(0.22} 0.1712,{0.28} 0.3952.{0.67} 0.4064.{0.69} 西 86.9408 0.0784.(0.09} 0.1888.{0.22} 0.5376,{0.62} 0.5232,{0.60} 西北 95.7376 0.1264.(0.13} 0.1200,{0.13} 0.6160.{0.64} 0.6848.{0.72} 北 68.7280 0.2384.{0.34} 0.3248.{0.47} 0.6800.{0.99} 0.6400.{0.93}表5 寿丰溪集水区各期间崩塌地坡度分布面积及崩塌率 Table5 Distribution of collapse area and collapse ratio to slope classification in the Hsoufong river basin 坡度／（°） 类别总面积 （TCA）／km 2 崩塌面积（CA）／km 2｛崩塌率（CA／TCA）／％｝ 1996 2002 2005 2007 ＜5 36∙512 0∙0032｛0∙09｝ 0∙0080｛0∙22｝ 0∙0080｛0∙22｝ 0∙0064｛0∙18｝ 5～15 5∙3344 0∙0544｛1∙02｝ 0∙0656｛1∙23｝ 0∙1024｛1∙92｝ 0∙0688｛1∙29｝ 15～30 37∙8640 0∙7312｛1∙93｝ 0∙6320｛1∙67｝ 0∙8976｛2∙37｝ 0∙9808｛2∙59｝ 30～40 58∙2448 2∙2656｛3∙89｝ 2∙3552｛4∙04｝ 2∙8672｛4∙92｝ 2∙7600｛4∙73｝ 40～55 78∙2144 5∙6224｛7∙19｝ 6∙4752｛8∙28｝ 7∙4816｛9∙57｝ 6∙8928｛8∙81｝ ＞55 28∙6816 4∙2016｛14∙65｝ 4∙5184｛15∙75｝ 5∙8576｛20∙42｝ 5∙1744｛18∙04｝ 表6 秀姑峦溪集水区各期间崩塌地坡度分布面积及崩塌率 Table6 Distribution of collapse area and collapse ratio to slope classification in the Siouguluan river basin 坡度／（°） 类别总面积 （TCA）／km 2 崩塌面积（CA）／km 2｛崩塌率（CA／TCA）／％｝ 1996 2002 2005 2007 ＜5 138∙3072 0∙0064｛0∙00｝ 0∙0128｛0∙01｝ 0∙0384｛0∙03｝ 0∙0304｛0∙02｝ 5～15 74∙3200 0∙1280｛0∙17｝ 0∙1856｛0∙25｝ 0∙2256｛0∙30｝ 0∙2512｛0∙34｝ 15～30 150∙8160 0∙9648｛0∙64｝ 0∙8784｛0∙58｝ 1∙1440｛0∙76｝ 1∙3424｛0∙89｝ 30～40 122∙8560 0∙7648｛0∙62｝ 0∙8624｛0∙70｝ 1∙1696｛0∙95｝ 1∙3296｛1∙08｝ 40～55 132∙9472 0∙6992｛0∙53｝ 0∙8768｛0∙66｝ 1∙4352｛1∙08｝ 1∙4912｛1∙12｝ ＞55 30∙9072 0∙2160｛0∙70｝ 0∙2320｛0∙75｝ 0∙5856｛1∙89｝ 0∙5856｛1∙89｝ 表7 寿丰溪集水区各期间崩塌地坡向分布面积及崩塌率 Table7 Distribution of collapse area and collapse ratio to aspect classification in the Hsoufong river basin 坡向 总崩塌面积 （TCA）／km 2 崩塌面积（CA）／km 2｛崩塌率（CA／TCA）／％｝ 1996 2002 2005 2007 东北 29∙4496 1∙7360｛5∙89｝ 1∙8912｛6∙42｝ 2∙2336｛7∙58｝ 2∙0720｛7∙04｝ 东 33∙0208 1∙7744｛5∙37｝ 2∙1168｛6∙41｝ 2∙9392｛8∙90｝ 2∙2000｛6∙66｝ 东南 28∙7840 2∙1344｛7∙42｝ 2∙6448｛9∙19｝ 3∙2784｛11∙39｝ 2∙5168｛8∙74｝ 南 24∙3136 1∙4528｛5∙98｝ 1∙6608｛6∙83｝ 2∙1936｛9∙02｝ 2∙0080｛8∙26｝ 西南 23∙2880 0∙7360｛3∙16｝ 0∙7616｛3∙27｝ 1∙1232｛4∙82｝ 1∙0960｛4∙71｝ 西 27∙1376 1∙6128｛5∙94｝ 1∙5952｛5∙88｝ 1∙8608｛6∙86｝ 2∙0560｛7∙58｝ 西北 28∙9696 2∙0848｛7∙20｝ 1∙9584｛6∙76｝ 2∙0288｛7∙00｝ 2∙2704｛7∙84｝ 北 20∙4224 1∙3696｛6∙71｝ 1∙4384｛7∙04｝ 1∙5840｛7∙76｝ 1∙6944｛8∙30｝ 表8 秀姑峦溪集水区各期间崩塌地坡向分布面积及崩塌率 Table8 Distribution of collapse area and collapse ratio to aspect classification in the Siouguluan river basin 坡向 总崩塌面积 （TCA）／km 2 崩塌面积（CA）／km 2｛崩塌率（CA／TCA）／％｝ 1996 2002 2005 2007 东北 82∙5920 0∙6240｛0∙76｝ 0∙7712｛0∙93｝ 0∙7472｛0∙90｝ 0∙8160｛0∙99｝ 东 94∙1456 0∙5920｛0∙63｝ 0∙6976｛0∙74｝ 0∙6016｛0∙64｝ 0∙7264｛0∙77｝ 东南 88∙6464 0∙7072｛0∙80｝ 0∙5440｛0∙61｝ 0∙7008｛0∙79｝ 0∙8224｛0∙93｝ 南 61∙3312 0∙2784｛0∙45｝ 0∙2208｛0∙36｝ 0∙3088｛0∙50｝ 0∙4032｛0∙66｝ 西南 59∙1760 0∙1280｛0∙22｝ 0∙1712｛0∙28｝ 0∙3952｛0∙67｝ 0∙4064｛0∙69｝ 西 86∙9408 0∙0784｛0∙09｝ 0∙1888｛0∙22｝ 0∙5376｛0∙62｝ 0∙5232｛0∙60｝ 西北 95∙7376 0∙1264｛0∙13｝ 0∙1200｛0∙13｝ 0∙6160｛0∙64｝ 0∙6848｛0∙72｝ 北 68∙7280 0∙2384｛0∙34｝ 0∙3248｛0∙47｝ 0∙6800｛0∙99｝ 0∙6400｛0∙93｝ 第12期 吴守从等： 应用遥测技术探讨台湾花莲地区土砂灾害集水区崩塌地的变迁 ·1509·