| Dynamic changes of land use in deserting-grazing village under the policy of “taking grain as the highest priority” in Yanchi country from 1964 to 1970 |
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| DOI：10.7606/j.issn.1000-7601.2017.04.29 |
| Key Words: land use landscape pattern the “take grain as the highest priority” policy deserting-grazing village |
| Author Name | Affiliation | | ZHOU Juan | Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North
-western China of Ministry of Education, Ningxia University, Yinchuan, Ningxia 750021, China | | SONG Nai-ping | Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North
-western China of Ministry of Education, Ningxia University, Yinchuan, Ningxia 750021, China | | LI Tuan-sheng | College of Earth Science and Resources, Chang'an University, Xi'an, Shaanxi 710054, China | | PAN Jun | Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North
-western China of Ministry of Education, Ningxia University, Yinchuan, Ningxia 750021, China | | AN Chao-ping | Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North
-western China of Ministry of Education, Ningxia University, Yinchuan, Ningxia 750021, China | | XIE Ying-zhong | Breeding Base for State Key Laboratory of Land Degradation and Ecological Restoration in Northwest China, Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in North
-western China of Ministry of Education, Ningxia University, Yinchuan, Ningxia 750021, China |
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| Abstract: |
| In order to assess the effect of the “taking grain as the highest priority” policy on land use change in deserting-grazing village and urban landscape pattern change, we used the village of Wanjigou in Yanchi county as an example. By GIS and Fragstats software, this study interpreted and analyzed three aspects of the United States KeyHole satellite image in 1964,1968 and 1970. The results show that grassland, as the matrix of the landscape, was in an absolute dominance (54.92%～47.57%) in the main types of land use in Wanjigou village from 1964 to 1970. At the same time, cultivated land and abandoned land accounted for about 25% of total area, and sand land was significantly increased (14.68%～20.51%). Saline area fluctuated with the precipitation. In terms of the number of patches from different types of landscape and fragmentation index, sandy and saline land basically unchanged in the early and late 60 s. by contrast, grassland was reduced by 72 and 0.015, abandoned land by 29 and 0.019, and cultivated land by 35 and 0.066. In conclusion, the “Taking grain as the highest priority” policy in deserting-grazing village caused an excessive land reclamation and ecological problems such as desertification, salinization. |
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