Potential for exploring cultivated land reserve resources under the influence of water supply project in Northern China

被引：0

作者：

Li W. ^{[1
]}

He G. ^{[1
]}

Zhao Y. ^{[1
]}

Yao Y. ^{[1
]}

He F. ^{[1
]}

Li H. ^{[1
]}

Wang H. ^{[1
]}

机构：

[1] State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing

来源：

Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering | 2024年 / 40卷 / 05期

关键词：

cultivated land reserve resources; irrigation; land use; northern region; rainfed; water conservancy project;

D O I：

10.11975/j.issn.1002-6819.202310176

中图分类号：

学科分类号：

摘要：

Irrigation water sources can greatly contribute to the reserve resources of arable land in northern China. National water network projects have also promoted the arable land reserve resources in recent years. In this study, a systematic evaluation was performed on the potential of cultivated land reserve resources under a water supply project in the northern region. The constraints of natural suitability, efficient use, and stable development were comprehensively analyzed to consider the ecological and spatial fragmentation of arable land reserve resources. The three-dimensional magic square was adopted to select evaluation units. Finally, the arable land reserve resources were optimized to fully meet the three requirements of sustainable ecology, natural quantity, and efficient quality. The results show that: (1) In rain-fed agriculture scenario, the area of unsuitable (Level I) development for cultivated land reserve resources in the unused land in the north was accounted for as high as 96 %, about 1.036 million km2, and the areas of barely suitable (Level II), moderate (Level III) and high (Level IV) were 2.9×104, 1.0×104 and 6.0×103 km2, respectively. Thus, the unused land shared less potential space to meet the reserve development of cultivated land under the limitation of natural precipitation. (2) In the irrigated agriculture scenario, the potential of arable land reserve resources increased significantly in the north region. The area suitable for arable land reserve resources increased to about 2.0×105 km2, accounting for 18% of the total area, mainly located at the edge of the Junggar Basin in Xinjiang, the edge of the Tarim River, the Shule River Basin in Gansu, and part of Inner Mongolia. (3) A comparison was made between the rain-fed and irrigated agriculture scenarios. Irrigation conditions with relatively scarce water resources were required to greatly improve the arable suitability of land resources at the naturally appropriate level. The suitable cultivated area increased from less than 3 000 km2 under the rain-fed scenario to about 48 000 km2, in order to optimize the allocation of land resources. (4) There was a small error in the geographical location and the number of cultivated land reserve resources, compared with the previous. Therefore, the evaluation model of cultivated land reserve resources presented high accuracy and credibility. The findings can provide a strong reference for the development and utilization of arable land reserve resources under the national water network projects in China. © 2024 Chinese Society of Agricultural Engineering. All rights reserved.

引用

页码：264 / 274

页数：10

共 28 条

[1] LIANG Xinyuan, JIN Xiaobin, HAN Bo, Et al., Evolution of the national cultivated land strategic reserve system under the background of storing grain in the land, Resources Science, 44, 1, pp. 181-196, (2022)
[2] HE G, GENG C, ZHAI J, Et al., Impact of food consumption patterns change on agricultural water requirements: An urban-rural comparison in China, Agricultural Water Management, 243, (2021)
[3] TANG Huaizhi, SANG Lingling, YUN Wenju, China’s cultivated land balance policy implementation dilemma and direction of scientific and technological innovation, Bulletin of Chinese Academy of Sciences, 35, 5, pp. 637-644, (2020)
[4] YI Ling, ZHANG Zengxiang, WANG Xiao, Et al., Spatial-temporal change of major reserve resources of cultivated land in China in recent 30 years, Transactions of the Chinese Society of Agricultural Engineering, 29, 6, pp. 1-12, (2013)
[5] BI Wei, DANG Xiaohu, MA Hui, Et al., Evaluation of arable land suitability and potential from the perspective of “Food Crop Production Strategy based on Farmland Management” in northwest China, Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE), 37, pp. 235-243, (2021)
[6] YE Sijing, SONG Changqing, GAO Peichao, Et al., Construction of the new cognitive system for arable land resources fromgeospatial perspective, Transactions of the Chinese Society of Agricultural Engineering(Transactions of theCSAE), 39, 9, pp. 225-240, (2023)
[7] WANG Shufen, ZHANG Xiying, PEI Dong, Impacts of different water supplied conditions on root distribution, yield and water utilization efficiency of winter wheat, Transactions of the Chinese Society of Agricultural Engineering(Transactions of the CSAE), 22, 2, pp. 27-32, (2006)
[8] LIU Yizhu, LI Qing, WU Wenbin, Analysis of feature selection for mapping irigated cropland in northern China, Chinese Journal of Agricultural Resources and Regional Planning, 42, 9, pp. 27-35, (2021)
[9] WANG Hao, WANG Lin, YANG Guiyu, Et al., Agricultural water resource in China and strategic measures for its efficient utilization, Strategic Study of CAE, 20, 5, pp. 9-15, (2018)
[10] LIU Changshun, DU Lijuan, CHEN Xian, Et al., The change of effectively irrigated land area in China during the past 20 years, Resources Science, 2, pp. 8-12, (2006)

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