青藏高原农牧业生产活动状况数据集之改良草地面积

该数据包含了青藏高原人类活动结构和强度的时空差异科考团队进行改良草地野外调查的样点方位及面积。草原改良是指在草原上，通过实施松土、切根、施肥、压盐压碱、压沙、土壤改良、灌溉等措施，使草原原生植被和生态得到改善的措施。本次调查共涉及到退耕还林还草、草地改良等项目。科考团队前期分别通过与青海省和西藏自治区农牧厅的相关调研，并结合不同季节中高分辨率的多源遥感影像，进行改良草地大致分布区域的确定。随后，科考团队分别于2021年、2022年和2023年7-8月份前往阿里地区、那曲地区、林芝地区、昌都地区、玉树藏族自治州、海西蒙古族藏族自治州、黄南藏族自治州等改良草地集中分布地区进行野外实地调研。该数据包含燕麦、苜蓿、披碱草等改良品种，近700条数据。该数据集对于分析青藏高原农牧业活动和草畜平衡等具有重要的基础数据支撑作用。This dataset records the azimuths and areas of sampling sites collected during field surveys of improved grasslands carried out by a research team investigating spatiotemporal variations in the structure and intensity of human activities on the Qinghai-Tibet Plateau. Grassland improvement refers to measures taken to restore the original vegetation and ecology of grasslands, including practices such as subsoiling, root cutting, fertilization, salt-alkali suppression via compaction, sand fixation via compaction, soil amendment, and irrigation. This survey covers projects such as the Grain for Green Program (converting cropland to forest and grassland) and grassland improvement. Prior to the formal field investigations, the research team identified the approximate distribution areas of improved grasslands through relevant investigations conducted in collaboration with the Agricultural and Pastoral Affairs Departments of Qinghai Province and the Tibet Autonomous Region, combined with multi-source medium- and high-resolution remote sensing imagery acquired across different seasons. Subsequently, the research team conducted on-site field surveys in the concentrated distribution regions of improved grasslands, including Ngari Prefecture, Nagqu Prefecture, Nyingchi Prefecture, Qamdo Prefecture, Yushu Tibetan Autonomous Prefecture, Haixi Mongolian and Tibetan Autonomous Prefecture, and Huangnan Tibetan Autonomous Prefecture, during July-August of 2021, 2022, and 2023 respectively. The dataset includes improved grass varieties such as oat, alfalfa, and Elymus, with nearly 700 sampling records. This dataset provides critical foundational data support for analyses of agricultural and pastoral activities, grass-livestock balance, and related research on the Qinghai-Tibet Plateau.

搜集汇总

背景与挑战

背景概述

该数据集是青藏高原农牧业生产活动状况数据集的一部分，专注于改良草地面积，提供了2021年至2023年期间青藏高原地区改良草地的野外调查数据，包括样点方位、面积及改良品种信息。数据以高空间分辨率（<=1米）的Shapefile矢量格式存储，包含近700条记录，主要用于支持青藏高原农牧业活动和草畜平衡的分析研究。