• 论文 •

### 北方农牧交错带农村居民点分布特征及其对土地利用的影响——以科尔沁左翼中旗为例

1. 1. 吉林大学地球科学学院, 吉林长春130021;
2. 中国科学院东北地理与农业生态研究所, 吉林长春130102
• 收稿日期:2014-01-18 修回日期:2014-05-08 出版日期:2015-03-20 发布日期:2015-03-20
• 作者简介:李飞(1989-),男,开封杞县人,博士研究生,主要研究方向为土地资源管理。E-mail:tianchiwaren@sina.com
• 基金资助:

中国科学院战略性先导科研专项"过去百年增暖对北方农牧交错带格局的影响[XDA05090310] "、国家自然基金项目(41271416)资助。

### Spatial Distribution of Rural Settlements in Farming-pastoral Zone of Northern China and Its Impact on Land Use Pattern: A Case Study of Korqin LeftWing Middle Banner

LI Fei1, ZHANG Shu-wen1,2, YANG Jiu-chun2, CHANG Li-ping2, BU Kun2, WANG Qing1

1. 1. College of Earth Science, Jilin University, Changchun, Jilin 130021, China;
2. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin 130102, China
• Received:2014-01-18 Revised:2014-05-08 Online:2015-03-20 Published:2015-03-20

Abstract:

Settlements are places of habitation, production and the living places for people. This article selected Korqin Left Wing Middle Banner as the study area, which was a typical farming-pastoral ecotone in the northern China. We selected elevation, slope, and aspect as factors that affected the distribution of rural settlements, and these factors were divided into 9, 6 and 8 grades, respectively. We conducted research about the distribution of rural settlements on different elevation, slope, aspect, and analyzed the impacts of rural settlements on land use pattern in ecotone between agriculture and animal husbandry. The results showed that: 1) Rural settlements mainly distributed in the areas that is from 0 m to 200 m above sea level, or where the slope is less than 6°, or shady slope. These are because the higher the altitude, the poorer living conditions are, which make it is difficult to build house and road. Moreover, the elevation also affects the precipitation and temperature that are critical for farming and grazing. Generally speaking, slope is a very impotent factor influencing the distribution of rural settlements. However, due to the study area is flat, we cannot find an obviously change trend of settlements density on different slope gradients. Affected by freeze-thaw action, settlements density on the shady slope is greater than that on the sunny slope. 2) Rural residential has a direct impact on land use pattern, the greater the rural settlement density, the greater proportion of agriculture land and the less proportion of grassland, and vice versa. The total area of cultivated land that located within 2 000 m away from the settlements is 2 701.90 km2, representing 74.4% of the total arable land; the grassland mainly distributed in the areas that farther away more than 1 500 m, The total grassland that within 1 500 m from the settlements only 35.1% of the total grassland, about 1 391.83 km2. In addition, according to the proportion of arable land and grassland within each town, the study area can be divided into agricultural region (cultivated land proportion > 50%), pastoral region (grassland proportion > 50%), agricultural and pastoral region (cultivated land proportion < 50% and grassland proportion < 50%). In agricultural region and pastoral region, the distribution of farmland and grassland around residential areas followed the same pattern: the farther away from the settlements, the less proportion of cultivated land and the higher proportion of the grassland. However, the situation is the opposite in pastoral region: the farther away from the settlements, the higher proportion of cultivated land, and the proportion of grassland away from residential areas within 2.5 km remain unchanged on the whole.

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