Nội dung được dịch bởi AI, chỉ mang tính chất tham khảo
Phân tích sự tiến hóa không gian-thời gian và các yếu tố ảnh hưởng đến sản xuất ngũ cốc của Trung Quốc
Tóm tắt
Sự phát triển kinh tế nhanh chóng và biến đổi khí hậu đã thúc đẩy sự biến đổi trong sản xuất lương thực của Trung Quốc và có khả năng tác động đến an ninh lương thực. Trong bài báo này, diện tích đất trồng ngũ cốc từ năm 2001 đến 2019 đã được chọn để phân tích sự tiến hóa không gian-thời gian và các yếu tố tác động đến sản xuất ngũ cốc của Trung Quốc thông qua phân tích tự tương quan không gian và hồi quy trọng số theo địa lý. Kết quả của chúng tôi như sau: (1) Từ quan điểm về đặc điểm thời gian, sản xuất ngũ cốc của Trung Quốc từ năm 2001 đến 2019 trải qua bốn giai đoạn, giảm nhanh, tăng nhanh, tăng ổn định và giảm chậm, mặc dù có một xu hướng tổng thể là tăng. (2) Từ quan điểm về đặc điểm không gian, mô hình không gian tổng thể có mối tương quan dương đáng kể. Các giá trị cao chủ yếu tập trung ở Sơn Đông, An Huy và Cát Lâm và di chuyển về phía đông bắc Trung Quốc theo thời gian. (3) Về các yếu tố ảnh hưởng, tác động tích cực của lực lượng lao động nông nghiệp đến sản xuất ngũ cốc dần giảm, thể hiện một xu hướng giảm từ tây nam đến đông bắc. Sự thúc đẩy của cơ giới hóa nông nghiệp đối với sản xuất ngũ cốc tăng dần theo từng năm, với đặc điểm phân bố không gian cao ở đông bắc và thấp ở tây nam. Bên cạnh đó, hệ số tiềm năng tài nguyên nước là âm, cho thấy một mô hình phân bố không gian cao ở phía bắc và thấp ở phía nam.
Từ khóa
#sản xuất ngũ cốc #Trung Quốc #phát triển kinh tế #biến đổi khí hậu #tự tương quan không gian #hồi quy trọng số theo địa lýTài liệu tham khảo
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