According to the recent practice in Laopingzi Village,Jiaopingdu Town,Luquan Yi and Miao Autonomous County(Luquan County hereinafter)in dry and hot valley of Jinsha River,the development of Zanthoxylum schinifolium Si...According to the recent practice in Laopingzi Village,Jiaopingdu Town,Luquan Yi and Miao Autonomous County(Luquan County hereinafter)in dry and hot valley of Jinsha River,the development of Zanthoxylum schinifolium Sieb.et Zucc planting industry can help farmers gradually get rid of poverty and achieve a virtuous cycle of ecological environment.It is a sustainable poverty alleviation way.Based on the three aspects of soil properties,climatic conditions,and topographical conditions influencing the growth of Z.schinifolium,this paper selected eight evaluation factors to establish a suitability evaluation system for Z.schinifolium,used the analytic hierarchy process to determine the indicator,and determined the weight of the evaluation indicators.Besides,it calculated the comprehensive suitability index of land suitability of Z.schinifolium and evaluated the suitability of Z.schinifolium land in Jiaopingdu Town of Luquan County.The results showed that the suitable area for the cultivation of Z.schinifolium in Jiaopingdu Town reached 7270.78 ha,accounting for 88.69%of the study area;the area of unsuitable land was 922.07 ha,accounting for 11.31%of the study area.Among the suitable land areas,the high suitability area reached562.99 ha,accounting for 7.79%;the moderate suitability area was 2206.76 ha,accounting for 28.61%;the low suitability area was4599.03 ha,accounting for 63.6%.Based on the results of suitability evaluation,it came up with pertinent recommendations for the development of Z.schinifolium industry in Jiaopingdu Town.展开更多
近年来,作者在横断山脉三江并流区开展历史堵江滑坡调查,在金沙江上游发现系列沿江分布的残碉,其中以左岸的白玉县卓英村残碉分布最为集中,共17座,且未见公开报道。这些残碉是一个历史部落或村庄的遗迹,是藏彝走廊历史文化遗存的组成部...近年来,作者在横断山脉三江并流区开展历史堵江滑坡调查,在金沙江上游发现系列沿江分布的残碉,其中以左岸的白玉县卓英村残碉分布最为集中,共17座,且未见公开报道。这些残碉是一个历史部落或村庄的遗迹,是藏彝走廊历史文化遗存的组成部分。鉴于藏彝走廊研究主要集中在社会科学方面,本文尝试采用自然科学方法拓展相关研究。基于现场调查和地质测年,结合前人工作成果,确定残碉群的建造时间与历史归属,分析历史滑坡堵江事件对河流地貌与河谷文明演变的影响。结果表明:1)卓英村残碉群兴建于1780~1490 a BP,相应的历史年代为东汉末期至南朝时期,按地域极有可能是古白狼国遗迹;2)残碉的修建高程和时间与措拉古滑坡堰塞湖尾部的湖滩高程和溃决时间等具有较好的一致性,湖泊淤积、干热河谷气候、取水便利等为卓英村的兴起奠定了基础;3)约1510 a BP前的一次大洪水事件导致措拉堰塞坝完全溃决,岸坡塌岸引起的耕地逐渐消失,以及取水不便等人居环境恶化是导致卓英村被遗弃的自然因素;4)横断山脉河流历史堵江滑坡引起的河道淤积为民族迁徙提供了良好的通道,也留存了丰富的历史遗迹,类似卓英村残碉的深入研究有望丰富和拓展白狼国与藏彝走廊的研究内容。展开更多
文摘According to the recent practice in Laopingzi Village,Jiaopingdu Town,Luquan Yi and Miao Autonomous County(Luquan County hereinafter)in dry and hot valley of Jinsha River,the development of Zanthoxylum schinifolium Sieb.et Zucc planting industry can help farmers gradually get rid of poverty and achieve a virtuous cycle of ecological environment.It is a sustainable poverty alleviation way.Based on the three aspects of soil properties,climatic conditions,and topographical conditions influencing the growth of Z.schinifolium,this paper selected eight evaluation factors to establish a suitability evaluation system for Z.schinifolium,used the analytic hierarchy process to determine the indicator,and determined the weight of the evaluation indicators.Besides,it calculated the comprehensive suitability index of land suitability of Z.schinifolium and evaluated the suitability of Z.schinifolium land in Jiaopingdu Town of Luquan County.The results showed that the suitable area for the cultivation of Z.schinifolium in Jiaopingdu Town reached 7270.78 ha,accounting for 88.69%of the study area;the area of unsuitable land was 922.07 ha,accounting for 11.31%of the study area.Among the suitable land areas,the high suitability area reached562.99 ha,accounting for 7.79%;the moderate suitability area was 2206.76 ha,accounting for 28.61%;the low suitability area was4599.03 ha,accounting for 63.6%.Based on the results of suitability evaluation,it came up with pertinent recommendations for the development of Z.schinifolium industry in Jiaopingdu Town.
文摘近年来,作者在横断山脉三江并流区开展历史堵江滑坡调查,在金沙江上游发现系列沿江分布的残碉,其中以左岸的白玉县卓英村残碉分布最为集中,共17座,且未见公开报道。这些残碉是一个历史部落或村庄的遗迹,是藏彝走廊历史文化遗存的组成部分。鉴于藏彝走廊研究主要集中在社会科学方面,本文尝试采用自然科学方法拓展相关研究。基于现场调查和地质测年,结合前人工作成果,确定残碉群的建造时间与历史归属,分析历史滑坡堵江事件对河流地貌与河谷文明演变的影响。结果表明:1)卓英村残碉群兴建于1780~1490 a BP,相应的历史年代为东汉末期至南朝时期,按地域极有可能是古白狼国遗迹;2)残碉的修建高程和时间与措拉古滑坡堰塞湖尾部的湖滩高程和溃决时间等具有较好的一致性,湖泊淤积、干热河谷气候、取水便利等为卓英村的兴起奠定了基础;3)约1510 a BP前的一次大洪水事件导致措拉堰塞坝完全溃决,岸坡塌岸引起的耕地逐渐消失,以及取水不便等人居环境恶化是导致卓英村被遗弃的自然因素;4)横断山脉河流历史堵江滑坡引起的河道淤积为民族迁徙提供了良好的通道,也留存了丰富的历史遗迹,类似卓英村残碉的深入研究有望丰富和拓展白狼国与藏彝走廊的研究内容。
