摘要
以广西平果县果化镇龙何屯为例,分析岩溶峰丛洼地石山区的土地资源特征和生态环境特征,认为岩溶峰丛洼地石山区的土地利用结构不合理,农业产业结构单一,耕地质量差,可耕地严重不足,后备耕地资源缺乏。提出以单个峰丛洼地为单元的景观生态型土地整理模式进行岩溶峰丛洼地石山区的土地整理。把单个峰丛洼地作为一个单元,按照生态系统的要求,进行水利设施、能源及交通设施建设,通过土壤改造,坡地改梯地及平整土地工程,景观整理措施,生物技术措施,以及农业措施来提高土地利用率和耕地质量,有效开发利用水资源,改善生态环境。该模式实施3a,龙何屯的强度水土流失区变成中轻度水土流失区;实现整个村子自来水到户,每户1个沼气池,粮食单产量提高到近4 5 0 0 kg/hm2 ,人均总收入约12 30元,提高了80 % ;植被覆盖度由原来不足10 %提高到37.74 % ,土壤侵蚀模数下降了30 %。
The unreasonable utility of land, single structure of farming,low quality of soil,shortage of arable land are problems to the karst peak cluster-depression rock mountain area.To improve this situation,an experiment was conducted in Longhe village,Pingguo county,Guangxi province,southern China,a representative of this kind of area.The measures in the experiment included the construction of irrigation system,power supply and transportation system and the employment of measures of soil improvement,terracing and leveling of slope land and biologic measures and agricultural measures.One single karst peak cluster-depression was used as a unit area.Three years later, the soil erosion in Longhe village has been improved greatly from intensive to low-grade.Each family has tap water and a marsh gas generating pit.Grain yield per unit area is increased to about 4500 kg/hm 2.Per capita income is increased by 80%,approximately 1230 yuan.Vegetation cover is increased from under 10% to 37.74%.Modulus of soil erosion is decreased by 30%.
出处
《广西科学院学报》
2005年第2期86-89,94,共5页
Journal of Guangxi Academy of Sciences
基金
"十五"国家科技攻关课题"岩溶峰丛洼地生态重建技术与示范"(2 0 0 1BA60 6A0 8)
