【作者】 陈全功； 张剑； 杨丽娜；

【Author】 CHEN Quan-gong,ZHANG Jian, YANG Lina (School of Pastoral Agricultural Science and Technology , Lanzhou University, Lanzhou,730020,China)

【机构】 兰州大学草地农业科技学院；

【摘要】 农牧交错带是我国农业种植区与草原畜牧区相连接的生态过渡地带,又称半农半牧区或生态脆弱带。多年来,不同学者对农牧交错带进行了不同程度的研究,取得了不少成果,但是农牧交错带的划分标准、分布规律、面积大小这三个问题,却始终没有明确的表述。造成这种状况的原因在于:界限指标单一,并且难以进行操作。为了解决上述问题,本研究以牧草生长的适宜度模型为依据,选取了9个生态因子,通过层次分析法和模糊集合理论建立了农牧交错带生态因子评定模型,并利用GIS技术对农牧交镨带进行空间计算,模拟出农牧交错带的地理分布,对中国农牧交错带的地理分布进行了较为细致的表述。结果表明:中国农牧交错带分布是沿胡焕庸所提出的人口分界线(黑龙江省的黑河——云南省的腾冲)走向的一条狭长地带,涉及黑龙江、吉林、內蒙古、辽宁、河北、山西、陕西、宁夏、甘肃、青海、四川、云南、西藏等13个省(区)的 234个县(市、旗),总面积813459．06 km2。更多还原

【Abstract】 The Chinese ecotone between farming and animal husbandry is the ecological transitional zone between agricultural planting area and the pastoral area in our country. It is also called half-agricultural and half-pastoral area or the ecological ecotone. The Chinese ecotone between farming and animal husbandry was studied by different scholars for many years, and then some achievements were got. However, three questions which is the divisional standard, the distribution rule and the area size of ecotone between farming and animal husbandry actually did not explicitly describe. The reasons forming this kind of condition lie in: One is the unitary divisional index; Another is the difficulty carrying on the operation. For solving these problems, Firstly, nine ecological factors correlating with the Chinese ecotone between farming and animal husbandry have been selected in this study. Secondly, the ecological factors evaluating models about the Chinese ecotone between farming and animal husbandry have been established by the suitability model about the forage growth, analytic hierarchy process(AHP), fuzzy set theory; Finally, Chinese ecotone between farming and animal husbandry was computed by GIS. The geographic distribution of the Chinese ecotone between farming and animal husbandry was simulated using the spatial computation of the evaluating models which are established by the ecological factors. Ultimately the geographic distribution about the Chinese ecotone between farming and animal husbandry is described in detail. The results show that: The distribution of the Chinese ecotone between farming and animal husbandry is a narrow strip along the population boundary (Heihe in Heilongjiang Province - Tengchong in Yunnan Province) which was proposed by Hu Huanyong. It includes 234 county of 13 Province(District) which is Heilongjiang, Jilin, Inner Mongolia, Liaoning, Hebei, Shanxi, Shaanxi, Ningxia, Gansu, Qinghai, Sichuan, Yunnan, Tibet. The total area is 813459. 06km2.更多还原