资源科学 ›› 2021, Vol. 43 ›› Issue (12): 2369-2380.doi: 10.18402/resci.2021.12.01

• “澜沧江—湄公河流域农业资源与环境”专栏 •    下一篇

中南半岛稻谷潜在分布区模拟

吴良(), 沈镭, 成升魁   

  1. 中国科学院地理科学与资源研究所,北京 100101
  • 收稿日期:2021-05-11 修回日期:2021-07-11 出版日期:2021-12-25 发布日期:2022-02-16
  • 作者简介:吴良,男,湖南临湘人,助理研究员,主要从事粮食安全和可持续食物系统等方面研究。E-mail: wuliang@igsnrr.ac.cn
  • 基金资助:
    地球大数据科学工程先导专项子课题(XDA19030201-4);澜沧江—湄公河合作专项;中国科学院重点部署项目(KJZD-EW-G20)

Potential distribution modeling of rice production in the Indo-China Peninsula

WU Liang(), SHEN Lei, CHENG Shengkui   

  1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2021-05-11 Revised:2021-07-11 Online:2021-12-25 Published:2022-02-16

摘要:

农作物潜在分布区是掌握农作物分布范围、估算农作物产量、评估气候变化对农业生产的影响、规划调整农业种植结构,以及规避自然和市场风险等的重要参考。中南半岛是全球水稻种植最为集中的地区之一,对全球粮食安全意义重大。本文采用物种分布模型MaxEnt,对中南半岛水稻的潜在分布区进行模拟。研究结果显示:①高程、坡度、灌溉距离成本、等温性、年温度变幅、年降雨量、降水变异系数和最暖季降雨量等8个环境与气候因子是该地区水稻分布的主要影响因素;②将水稻样本按照种植类型分为3类(低地灌溉、低地雨养和高地雨养)进行模拟比利用全部样本进行模拟的精度显著提高;③中南半岛水稻的潜在分布区为1.140亿hm2,占全部国土面积的53.3%。本文模拟的潜在分布区可以为指引中南半岛、特别是澜沧江—湄公河流域水稻种植,保障区域粮食供给和优化农业产业布局提供科学支撑。

关键词: 水稻种植, 潜在分布区, 物种分布模拟, 最大熵模型(MaxEnt), 粮食安全, 中南半岛

Abstract:

Potential distribution area plays important roles for estimating crop planting range and production, evaluating the impact of climate change on agricultural production, planning agricultural structure, and avoiding natural and market risks, among others. The Indo-China Peninsula (ICP) is a dominant region for rice production and plays a vital role for the food security of the world. This study modeled the potential distribution area of rice production across the ICP using MaxEnt—a popular software for species distribution modeling. The results show that: (1) Eight environmental factors, i.e, elevation, slope, irrigation cost distance, isothermality, temperature annual range, annual precipitation, precipitation seasonality and precipitation of warmest quarter, are the main influencing factors for rice production distribution in the region; (2) The model accuracy increased significantly (p<0.05) when all rice samples were divided into three subgroups (lowland irrigation, lowland rainfed, and upland rainfed) before modeling; (3) The potential distribution area of rice production in the ICP is 114 million hectares, which accounts for 53.3% of the total land area of the region. The results of the potential distribution area of rice production can offer scientific supports for guiding rice plantation pattern, safeguarding regional food supply, and optimizing the agricultural industry in the ICP region.

Key words: rice production, potential distribution area, species distribution modeling, MaxEnt, food security, Indo-China Peninsula