摘要
湖南新化县紫鹊界梯田于2005年12月被国务院确定为第六批国家重点风景名胜区之一，梯田坡度在25～40°，共500余级，10万多丘。分析其生态与社会条件表明，紫鹊界梯田之所以可持续利用的灾害防御机制是：发挥了稻田“隐形水库”的集雨功能，趋利避害；分级截流分散蓄水，实现了区域内水资源的重新分配；传统耕作维护了梯田结构。与水平双季稻田相比，该梯田提高丁截水量和光能利用率，延长了农闲蓄水时间。
Ziquejie Terrace was approved as one of national famous scenic spot by the State Council in December 2005, it is located at 25 -40° hillside which has more than 500 steps, 5300 hm^2and 100 000 pieces. Through synthesizing the ecological and social conditions, this paper analyzed the disaster prevention mechanism existed in Ziquejie Terrace as followings： it fully exerted the function of rice field as stealthy reservoir to collect rainy water; it realized water resources redistribution by graded flow block-up and decentralized water-store-up model; traditional cultivation methods is good for keeping up terrace construction; comparing with two season horizontal rice field, it increased block-up quantity of water and utilizable ratio of sunlight energy and time for water block-up.
出处
《自然灾害学报》
CSCD
北大核心
2006年第6期106-108,共3页
Journal of Natural Disasters
基金
国家自然科学基金资助项目(39670142)
关键词
紫鹊界梯田
隐形水库
分级截流
分散蓄水
防灾机制
Ziquejie Terrace
stealthy reservoir
graded flow-block-up
decentralized water-store-up
disaster prevention mechanism
