本数据集记录了2019年塔吉克斯坦、Lucholb、Tabakchi和Ziddi四个草地生态样方的植被物种丰富度、高度、盖度、地上生物量、物候等生物要素野外观测数据。\nBlakhi样方建于2019年6月，属于荒漠草地生态系统。Luchob样方建于2018年6月，属于山地草甸生态系统。Tabakchi样方建于2019年6月，属于荒漠草地生态系统。Ziddi样方建于2019年6月，属于荒漠草地生态系统。\n生态样地设计规格为100 m × 100 m，在每处样地里以间隔1m, 4行5列均匀划分3*3m的记录样地，在记录样地内设置的1 m × 1 m小样方内进行物种丰富度、高度、盖度、物候的调查记录。调查结束后收获小样方内植物地上部分，称其鲜重，然后带回实验室称干重。每年于生长期始末5月-8月观测两次。2021年在样地内安装Campbell CCFC物候相机等观测设备，获取植被物候数据。
", "ds_source": "2018-2019年中国科学院新疆生态与地理研究所联合塔吉克斯坦科学院在塔吉克斯坦共建布设Lucholb、Blakhi、Tabakchi和Ziddi四处生态样地，数据来源于野外生态样方监测调查。
", "ds_process_way": "数据采集过程：\n生态样方统一设计规格为100 m × 100 m，建立围栏，在围栏内每间隔1m划分1个3m×3m的样地，共4行×3列12个样地，随机分配成4个重复组，在每个样地里随机选1m×1m的范围做样方调查取样。\n对照组、N30、P30、N30P30、N90P30，分别对应不施肥、施氮肥3克/m2，施磷肥3克、是氮肥3克磷肥3克、施氮肥9克磷肥3克，观测记录不同的施肥量情况下的植被长势。\n物种丰富度数据采集与记录：在1m×1m的小样方内，记录全部植物物种的数量，单位以个数记。\n地上生物量数据采集与记录：在1m×1m的小样方内，距地面根部1cm的地方，把所有的植物齐根剪掉，现场称量所有植物的重量，得到鲜草重量，单位以克/m2记；然后把剪下来的植物带回实验室用烘干箱，调至65℃烘干5个小时，取出放凉称重，得到干草重量，单位以克/m2记。\n2021年在样地内安装Campbell CCFC物候相机等观测设备，获取植被物候数据。\n所有的数据采集均是以5个分组4个重复进行操作。监测指标监测频度如下表所示：
\n监测指标 监测频度 监测时间\n植被覆盖度 1次/年 整个生长季\n物种组成 1次/年 生长旺盛期\n高度 1次/年 生长旺盛期\n初级生产力 1次/年 生长旺盛期\n物候 1次/周 整个生长季
", "ds_quality": "数据采集加工处理记录依据《全国生态状况调查评估技术规范——草地生态系统野外观测》（HJ 1168-2021）。
", "ds_acq_start_time": "2019-06-15 00:00:00", "ds_acq_end_time": "2019-06-15 00:00:00", "ds_acq_place": "塔吉克斯坦Lucholb、Blakhi、Tabakchi和Ziddi四处生态样地", "ds_acq_lon_east": null, "ds_acq_lat_south": null, "ds_acq_lon_west": null, "ds_acq_lat_north": null, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "apply-access", "ds_total_size": 118364, "ds_files_count": 3, "ds_format": "xls", "ds_space_res": "无", "ds_time_res": "无", "ds_coordinate": "无", "ds_projection": "无", "ds_thumbnail": "b5665409-3000-4bc7-9b1d-db256388d68c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "a5877b42-96ea-4f13-af7e-246f355413d6", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 1, "publish_time": "2025-03-06 16:03:10", "first_publish_time": null, "last_updated": "2025-05-27 19:01:41", "protected": false, "protected_to": null, "lang": "zh", "cstr": "33110.11.ariddc.00303", "license": null, "extra": null, "files_shape": [ { "name": "Data", "size": null, "is_dir": true } ], "features": null, "data_level": 0, "i18n": { "en": { "title": "2019-2021 Biological element observation data set of Tajikistan ecological sample in 2008", "ds_abstract": "This dataset records field observation data of vegetation species richness, height, coverage, aboveground biomass, phenology and other biological factors in four grassland ecological samples of Tajikistan, Lucholb, Tabakchi and Ziddi in 2019.\nThe Blakhi prototype was built in June 2019 and belongs to the desert grassland ecosystem. The Luchob quadrat was built in June 2018 and belongs to the mountainous meadow ecosystem. The Tabakchi quadrat was built in June 2019 and belongs to the desert grassland ecosystem. The Ziddi plot was built in June 2019 and belongs to the desert grassland ecosystem.\nThe design specification of the ecological sample plot is 100 m × 100 m. Each sample plot is evenly divided into 3*3m recording sample plots at intervals of 1m and 4 rows and 5 columns. The species richness, height, coverage, and phenology are investigated and recorded in the 1 m × 1 m small squares set up in the recording sample plot. After the investigation, the above-ground parts of the plants in the small sample were harvested, weighed for fresh weight, and then taken back to the laboratory for dry weight. Observations are made twice a year from May to August at the beginning and end of the growing season. In 2021, observation equipment such as the Campbell CCFC phenology camera will be installed in the sample plot to obtain vegetation phenology data.
", "ds_source": "From 2018 to 2019, the Xinjiang Institute of Ecology and Geography of China Academy of Sciences and the Tajikistan Academy of Sciences jointly built four ecological sample plots in Tajikistan, Lucholb, Blakhi, Tabakchi and Ziddi. The data comes from field ecological sample monitoring surveys.
", "ds_process_way": "Data collection process:\nThe unified design specification of the ecological plot is 100 m × 100 m. Fences are established, and 1 sample plots of 3m×3m are divided into every 1m interval within the fence. There are a total of 12 sample plots in 4 rows ×3 columns, which are randomly assigned into 4 replicate groups, and a range of 1m×1m was randomly selected in each sample plot for sampling.\nThe control group, N30, P30, N30P30, and N90P30 respectively corresponded to no fertilizer, application of nitrogen fertilizer 3 g/m2, application of phosphorus fertilizer 3 g, application of nitrogen fertilizer 3 g, application of nitrogen fertilizer 9 g, and application of phosphorus fertilizer 3 g, respectively. Observe and record the vegetation growth under different fertilization amounts.\nCollection and recording of species richness data: In a small sample of 1m×1m, record the number of all plant species, and the unit is counted in number.\nCollection and recording of above-ground biomass data: In a small sample of 1m×1m, cut off all plants at the root of the ground, and weigh all plants on site to get the weight of fresh grass in grams/m2; Then take the cut plants back to the laboratory and use a drying box, adjust to 65℃ for 5 hours, take them out, cool and weigh to get the weight of the hay in grams/m2.\nIn 2021, observation equipment such as the Campbell CCFC phenology camera will be installed in the sample plot to obtain vegetation phenology data.\nAll data collection was performed in 5 groups and 4 replicates. The monitoring frequency of monitoring indicators is shown in the following table:
\nmonitoring indicators monitoring frequency monitoring time\nvegetation coverage 1 time/year whole growing season\nspecies composition 1 time/year period of vigorous growth\nHeight 1 time/year period of vigorous growth\nprimary productivity 1 time/year period of vigorous growth\nPhenology once per week whole growing season
", "ds_quality": "Data collection, processing and processing records are based on the \"National Technical Specifications for Survey and Evaluation of Ecological Status-Field Observation of Grassland Ecosystem\"(HJ 1168-2021).
", "ds_acq_place": "Four ecological sites in Lucholb, Blakhi, Tabakchi and Ziddi in Tajikistan", "ds_format": "xls", "ds_projection": "no", "ds_space_res": "no", "ds_time_res": "no" } }, "license_type": null, "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "生物量", "丰度", "盖度", "高度", "物候" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "塔吉克斯坦" ], "ds_time_tags": [ 2019 ], "ds_contributors": [ "范连连", "李耀明" ], "ds_meta_authors": [ "李锦" ], "ds_managers": [ "范连连" ], "category": "生态环境" }