贵州花江喀斯特峰丛峡谷耕地承载力研究

喀斯特峰丛峡谷地区土地贫脊 ,土地有效利用面积比例小 ,土地资源生产潜力小 ,环境容量低 ,生态环境脆弱。文章从光合潜力、光温潜力、气候潜力和气候土地潜力等方面综合考虑建立土地生产潜力模型 ,对贵州花江喀斯特峰丛峡谷土地承载力的耕地承载力部分进行了估算研究。研究表明 ,仅从耕地承载力来看 ,该区目前的总人口数已经超过了该区的耕地承载力

Investigation on population carrying capacity of the cultivated land in the Huajiang karst fengcong gorge of Guizhou

With infertile soil and low proportion of land utilization in the area of karst mountain peaks and valleys ,the potential production capacity and environment bearing capacity of the land come to be very low ,and the ecological environment is very weak.Aiming at setting up a production potentiality model of this area,we have conducted an estimating investigation of the population carrying capacity of the cultivated land in Huajiang,the typical karst mountain peaks and velleys of Guizhou province,in consideration of four factors:1)photosynthesis potentiality,2) photosynthesis and temperature potentiality,3) climate potentiality,4) climate and soil potentiality.The investigation shows that the current total population exceeds the population carrying capacity in this area,judging from the potential production capacity of the cultivated land .