| 重庆南川区石漠化分布特征及其坡地利用模式分析 |
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| 引用本文： | 熊平生,袁道先,谢世友,白俞.重庆南川区石漠化分布特征及其坡地利用模式分析[J].中国岩溶,2012,31(1):46-51. |
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| 作者姓名： | 熊平生 袁道先 谢世友 白俞 |
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| 作者单位： | 1.西南大学地理科学学院；赣南师范学院地理与规划学院 |
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| 基金项目： | 科技部国际合作项目(2008GR1256)、国家自然科学基金(41072192)、国家科技支撑计划(2006BAC01A16)、中国地质调查局地质调查(1212010813111)、(CSTC2009BA0002)、(CSTC,2010BC7004) |
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| 摘 要： | 利用2004TM遥感影像,并结合地质、水文气象、土地利用图等,研究了重庆南川区石漠化的分布特征。结果表明,南川区石漠化分布具有如下特征:地层岩性上,石漠化集中发育在中生界三叠系嘉陵江、飞仙观、雷口坡组和下古生界奥陶系马家沟组碳酸盐地区的纯灰岩与其他灰岩和白云岩互层分布区中;气象水文上,石漠化集中分布在中部槽坝年均温为10~16℃、年降水量大于1200mm的地区;地形高程上,轻度石漠化和中度石漠化主要分布在海拔800~1200m之间,重度石漠化主要分布在600~800m之间,极重度石漠化主要分布在500~600m之间;土地利用上,轻度和中度石漠化主要分布于灌木林地中,重度以上石漠化则主要见于旱地。根据研究区石漠化的发育和分布特点,建议平缓坡地(<5°)推行稻田保护性耕作和加强无公害农产品基地建设;较缓坡地(5°~15°)发展农耕和种植园区;较陡坡地(15°~25°)种植藤本植物(金银花)、经济林果和生态林草;陡峻坡地(>25°)应长期封山育林,重点发展水源林和景观林。
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| 关 键 词： | 重庆南川区 岩溶石漠化 分布特点 坡地利用 |
| 收稿时间： | 2011/4/23 0:00:00 |
Distribution of the rocky desertification and slope-land use patterns in Nanchuan Region of Chongqing City |
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| XIONG Ping-sheng,YUAN Dao-xian,XIE Shi-you and BAI Yu.Distribution of the rocky desertification and slope-land use patterns in Nanchuan Region of Chongqing City[J].Carsologica Sinica,2012,31(1):46-51. |
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| Authors: | XIONG Ping-sheng YUAN Dao-xian XIE Shi-you and BAI Yu |
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| Institution: | 1.School of Geographical Sciences, Southwest University；Geography and planning School of Gannan Normal University2.School of Geographical Sciences, Southwest University；Institute of Karst Geology, CAGS / Karst Dynamics Laboratory, MLR & GZAR3.School of Geographical Sciences, Southwest University |
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| Abstract: | Desertification distribution in Nanchuan region of Chongqing City is studied on the basis of 2004 TM and maps of geology,hydro meteorology and landuse.The results show that： lithologically,the desert mainly distributes in the areas of pure limestone and the interlayed strata of pure limestone and dolomite,which belonging to the Jialingjiang Group,Fixian＇guan Group and Leikoupo Group of the Triassic system in Mesozoic and the Majiagou Group of the lower Paleozoic Ordovician;hydro meteorologically,the desert mainly distributes in the areas of the central flat land with the annual temperature ranges from 10 ℃ to 16 ℃ and annual precipitation over 1 200 mm;topographically,slightly and moderately deserted deserts mainly in 800-1 200 m area,but severely deserted area in 600-800 m,and extremely deserted desert 500-600 m above sea level;in view of land use,slightly and moderately deserted deserts mainly in shrub land,the severely deserted one in non-irrigated farmland.According to the development of desertification and the distribution of the deserts,it is suggested that the gentle land（〈5°） be used as paddy field by protective tillage and green food production land;and the gentle slope land（5°-15°） be used as cultivation and plantation areas;the relatively dip slope（15°-25°） as vine（honeysuckle）planting land,fruit planting land and ecologic grass land;the steep slope land（〉25°）as water conservation forest and scenery forest by long term close hillsides to facilitate afforestation. |
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| Keywords: | Nanchuan region in Chongqing rocky desertification distribution features slope land use |
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