全国10m分辨率茶园时空分布数据集（2022年）

及时、准确地获取茶园空间分布图，掌握茶叶种植面积的变化特征，对于确保全球茶叶供应和促进贸易稳定至关重要。以中国云南、贵州、四川和湖北等16省为研究区，结合雷达时序数据纹理的时序变异性以及单位叶面积酚类化合物丰度等方面设计茶园制图指数，获得2022年全国10米空间分辨率的茶园空间分布数据集。研究表明茶园分布受地形因素影响，区域种植密度较低(平均10%)，茶园较为密集的地区通常位于海拔700米至2000米的有利位置，坡度在2°至18°之间。中国已经建立了两个种植密度较大的主要区域，分别覆盖中西部(如湖北、湖南、贵州)和东部(如福建、浙江)地区，尽管云南的茶叶分布面积最大，但种植密度和产值都高于云南。该数据集存储为.tif格式，压缩后数据量为333MB。该数据集的分析研究成果发表在《Remote Sensing of Environment》2024年303卷。

Timely and accurate acquisition of spatial distribution maps of tea plantations and mastery of the variation characteristics of tea planting areas are crucial for ensuring global tea supply and promoting trade stability. Taking 16 provinces across China including Yunnan, Guizhou, Sichuan, Hubei and other regions as the study area, a tea plantation mapping index was developed by integrating the temporal variability of radar time-series data textures and the abundance of phenolic compounds per unit leaf area, and the national 10-meter spatial resolution tea plantation spatial distribution dataset for 2022 was obtained. Studies have shown that the distribution of tea plantations is affected by topographic factors, with a relatively low regional planting density (average 10%). Densely concentrated tea plantation areas are usually located in favorable positions with an altitude of 700 to 2000 meters and a slope ranging from 2° to 18°. China has established two major regions with high planting density, covering the central-western region (e.g., Hubei, Hunan, Guizhou) and the eastern region (e.g., Fujian, Zhejiang) respectively. Although Yunnan boasts the largest tea cultivation area, the planting density and output value of these two major regions are higher than those of Yunnan. This dataset is stored in .tif format, with a compressed data size of 333 MB. The research findings based on the analysis of this dataset were published in *Remote Sensing of Environment*, Volume 303, 2024.

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背景概述

该数据集是2022年全国茶园空间分布的高分辨率（10米）遥感产品，覆盖中国16个主要产茶省份。它基于Sentinel-1和Sentinel-2影像，通过融合雷达纹理时序变异性和植被色素指数（如茶多酚物候指标）的先进算法生成，总体分类准确率达94.87%。数据集揭示了茶园分布受地形显著影响，主要集中于海拔700-2000米、坡度2°-18°的区域，并识别出中西部（如湖北、湖南）和东部（如福建、浙江）两个种植密集区，为茶叶种植监测、农业规划和贸易分析提供科学依据。