Aliens and endangered plants
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The datasets used in the article includes of “Endangered plants.csv” and “Alien plants.csv”. The dataset of “Endangered plants” contains data from the list of the National Key Protected Wild Plants (the first and second batches) officially approved by the State Council, 1898 plants were recorded in the information system of the Chinese Rare and Endangered Plants. The dataset of “Alien plants” contains data from The Checklist of the Chinese Invasive Plants and 562 alien plants were recorded.Diaspore morphological traits were collected from database of the Flora of China (http://www.iplant.cn/foc/). Diaspore Information Database from Royal Botanic Gardens (http://data.kew.org/sid/), and the PLANTS Database of the United States (https://plants.usda.gov/java/).Each dataset includes 29 columns: ID, Species, Family, Dispersal strategy, The number of dispersal strategies of a plant, Reproductive mode, The number of reproductive modes of a plant, Life form, Habitat type, The number of habitats of a plant, Distribution scale, Score 1-16, Adaptive capacity to stressful environments, and Adaptive capacity to disturbed environments.Dispersal strategy includes: autochory (barochory, ballistic dispersal, and blastochory); anemochory (macrogeochory, meteor-anemochory, trichometeorochory, and pterometeorochory); hydrochory (bythisochory, zoohydrochory, and nautohydrochory); zoochory (endozoochory, epizoochory, frugivory, graminivory, granivory, and myrmecochory); and anthropochory (agochory, ethelochory, speirochory, and anthropochory). The number of dispersal strategies of a plant includes: one or two modes, three modes, four modes, and more than four modes. The reproductive mode includes: 1) spores or seeds; 2) ramets; 3) cutting, layering, or grafting; 4) rhizome; and 5) budding. The number of reproductive modes of a plant includes: one mode, two modes, three modes, and more than three modes. Life form includes: annual and biennial, perennial, vine, shrub, and arbor. Habitat type includes: 1) deserts or desert steppes; 2) steppes or dry hillsides; 3) waysides, near villages or wastelands; 4) farm lands; 5) meadow steppes or grasslands; 6) exposed rocks and crevices or tree tops; 7) forest edges, shrublands, or jungles; 8) rivers, lake banks, or benches; 9) marshes, wet meadows, or paddy fields and 10) in water. The number of plant habitats includes: one type, two types, three types, and more than three types. Distribution scale county scale (< 5 × 104 km2), municipal scale (5–35 × 104 km2), provincial scale or autonomous regions (35–150 × 104 km2), and national scale (>150 × 104 km2). Score 1-16 are scores of in corresponding indicator assessed in stressful and disturbed environment, respectively. Adaptive capacity to stressful and disturbed environments are total scores of plants assessed to stressful and disturbed environments.In the study, we collected plant information, including dispersal strategy, the number of dispersal strategies of a plant, distribution scale, life form, habitat type, the number of habitats of a plant, reproductive mode, and the number of reproductive modes of a plant to assess the adaptive capacity of alien and endangered plants in disturbed and stressful environments in China using the analytic hierarchy process (AHP). Our aim was to answer why the habitat area of alien plants tends to expand continually whereas that of endangered plants maintains or shrinks.
本文所用数据集包含《濒危植物.csv》与《外来植物.csv》。其中，《濒危植物》数据集源自国务院正式批准的《国家重点保护野生植物名录》（第一批及第二批），中国珍稀濒危植物信息系统中共收录1898种植物；《外来植物》数据集源自《中国入侵植物名录》，共收录562种外来植物。传播体(diaspore)形态性状数据来源于中国植物志数据库（Flora of China，http://www.iplant.cn/foc/）、英国皇家植物园传播体信息数据库（http://data.kew.org/sid/）以及美国农业部植物数据库（https://plants.usda.gov/java/）。两类数据集均包含29个字段，分别为：ID、物种、科、传播策略、植物传播策略数量、繁殖方式、植物繁殖方式数量、生活型、生境类型、植物生境数量、分布尺度、1-16评分、胁迫环境适应能力以及干扰环境适应能力。传播策略涵盖以下类别：自播（autochory，含重力传播、弹射传播及匍匐传播）、风播（anemochory，含大尺度风播、气流风播、毛状体风播及翼状风播）、水播（hydrochory，含漂浮传播、动物介导水播及海洋水播）、动物传播（zoochory，含体内传播、体外传播、食果传播、食谷传播、食粒传播及蚁播）以及人为传播（anthropochory，含随物携带、人工播撒、主动搬运及人为干预传播）。植物传播策略数量分为：1或2种策略、3种策略、4种策略及4种以上策略。繁殖方式涵盖：1）孢子或种子；2）分株；3）扦插、压条或嫁接；4）根茎；5）萌芽。植物繁殖方式数量分为：1种方式、2种方式、3种方式及3种以上方式。生活型涵盖：一年生及二年生、多年生、藤本、灌木及乔木。生境类型涵盖：1）荒漠或荒漠草原；2）草原或干燥山坡；3）路边、村庄附近或荒地；4）农田；5）草甸草原或草原；6）裸露岩石及缝隙或树冠；7）林缘、灌丛或丛林；8）河流、湖岸或阶地；9）沼泽、湿草甸或稻田；10）水生环境。植物生境数量分为：1种类型、2种类型、3种类型及3种以上类型。分布尺度分为：县域尺度（<5×10⁴ km²）、市域尺度（5–35×10⁴ km²）、省级或自治区级尺度（35–150×10⁴ km²）及国家级尺度（>150×10⁴ km²）。1-16评分分别为对应指标在胁迫环境与干扰环境下的评分；胁迫与干扰环境适应能力为植物在两类环境下的综合评分。本研究收集了植物的传播策略、植物传播策略数量、分布尺度、生活型、生境类型、植物生境数量、繁殖方式及植物繁殖方式数量等信息，采用层次分析法(analytic hierarchy process, AHP)评估中国外来植物与濒危植物在干扰和胁迫环境中的适应能力。本研究旨在解答：为何外来植物的生境面积持续扩张，而濒危植物的生境面积却维持不变甚至缩减。
