本数据集为内蒙古自治区和宁夏回族自治区的荒漠草原、典型草原各样地植被群落调查数据。本次实验为研究天然草地退化原因过程与机制提供了基础数据。\n
属性信息包括：物种丰富度、样方盖度、地上生物量、凋落物生物量和退化梯度（0：潜在退化；1：轻度退化；2：中度退化；3：重度退化）。\n
物种丰富度：Shannon-weiner index\n
H’=-ΣPilnPi \n
式中Pi=Ni/N ，Ni为种i的个体数，N为所在群落的所有物种的个体数之和。\n
样方盖度：植物体地上部分垂直投影所覆盖的面积占调查面积的百分比。\n
地上生物量：取植物样品地上部分置于65℃恒温烘箱24h。取出后使用千分位电子天平称重。\n
凋落物生物量 ：收集各样方内凋落物，使用千分位天平称重 。\n
退化梯度：草地退化的不同程度。", "ds_source": "
在每个草原类型的采样点间隔约50 km，随机选取地势开阔的位置设置样点，并用GPS记录每个样点的地理位置信息。每个样点设置1个10 m×10 m的大样方，在大样方的每个角落及中心位置设置5个1 m × 1 m小样方（在少数样点仅沿对角线设置3个小样方）。", "ds_process_way": "
室内实验，自主生产。", "ds_quality": "
人工测量植物的高度、盖度、株丛数量数据，使用最小刻度为1 mm的钢尺，误差小于1 mm。", "ds_acq_start_time": "2017-06-01 00:00:00", "ds_acq_end_time": "2017-08-31 00:00:00", "ds_acq_place": "内蒙古自治区,宁夏回族自治区", "ds_acq_lon_east": 123.66944444444445, "ds_acq_lat_south": 37.82972222222222, "ds_acq_lon_west": 106.97, "ds_acq_lat_north": 49.00277777777778, "ds_acq_alt_low": 144.0, "ds_acq_alt_high": 1669.0, "ds_share_type": "login-access", "ds_total_size": 284614, "ds_files_count": 3, "ds_format": "excel", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "2d85a19a-3891-4563-bfbe-77704b9e09ff.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "保障平台科技资源的权益、扩展平台中心的服务、提升科技资源的应用潜力，请资源使用者在使用资源所产生的研究成果中（包括公开发表的论文、论著、数据产品和未公开发表的研究报告、数据产品等成果），明确注明资源来源和资源作者。", "ds_from_station": null, "organization_id": "ab053fbf-7b27-4c1a-b8e5-cab5b8f00480", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "10.12072/ncdc.Dgrass.db2095.2022", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2022-05-20 09:29:21", "last_updated": "2025-06-30 16:03:42", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.ncdc.Dgrass.db2095.2022", "i18n": { "en": { "title": "Survey data set of vegetation communities in some areas of Inner Mongolia Autonomous Region and Ningxia Hui Autonomous Region (June August 2017)", "ds_format": "excel", "ds_source": "
The sampling points of each grassland type are spaced at an interval of about 50 km. The sampling points are randomly selected at open terrain, and the geographic location information of each sampling point is recorded by GPS. Each sample point is set with one 10m × For 10 m large quadrat, five 1 m large quadrats shall be set at each corner and center of the large quadrat × 1 m small quadrat (only 3 small quadrats are set along the diagonal at a few sample points).", "ds_quality": "
Manually measure the data of plant height, coverage and number of plants, and use a steel ruler with a minimum scale of 1 mm, with an error of less than 1 mm.", "ds_ref_way": "", "ds_abstract": "
This data set is the survey data of vegetation communities in desert grassland and typical grassland in Inner Mongolia Autonomous Region and Ningxia Hui Autonomous Region. This experiment provides basic data for the study of the causes, processes and mechanisms of natural grassland degradation.\n
Attribute information includes: species richness, quadrat coverage, aboveground biomass, litter biomass and degradation gradient (0: potential degradation; 1: mild degradation; 2: moderate degradation; 3: severe degradation).\n
Species richness: Shannon Weiner index\n
H’=- Σ PilnPi \n
Where pi = Ni / N, Ni is the number of individuals of species I, and N is the sum of the number of individuals of all species in the community.\n
Quadrat coverage: the percentage of the area covered by the vertical projection of the aboveground part of the plant in the investigated area.\n
Aboveground biomass: take the aboveground part of the plant sample and place it in a 65 ℃ constant temperature oven for 24 hours. After taking it out, weigh it with a micrometer electronic balance.\n
Litter biomass: collect the litter in each quadrat and weigh it with a micrometer balance.\n
Degradation gradient: different degrees of grassland degradation.
", "ds_time_res": "", "ds_acq_place": "Inner Mongolia Autonomous Region, Ningxia Hui Autonomous Region", "ds_space_res": "", "ds_projection": "", "ds_process_way": "Indoor experiment, independent production.", "ds_ref_instruction": "Protect the rights and interests of the platform's scientific and technological resources, expand the services of the platform center, and enhance the application potential of scientific and technological resources. Resource users are requested to clearly indicate the source and author of resources in the research results generated by the use of resources (including published papers, treatises, data products, unpublished research reports, data products, etc.)." } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "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": [ "植物群落", "草地退化", "地上生物量", "凋落生物量" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "内蒙古自治区", "宁夏回族自治区" ], "ds_time_tags": [ 2017 ], "ds_contributors": [ { "true_name": "王仁忠", "email": "Wangrz@ibcas.ac.cn", "work_for": "中国科学院植物研究所", "country": "中国" }, { "true_name": "马琳娜", "email": "maln@ibcas.ac.cn", "work_for": "中国科学院植物研究所植被与环境变化国家重点实验室", "country": "中国" }, { "true_name": "党振华", "email": "zhdang_1982@aliyun.com", "work_for": "内蒙古大学", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "王仁忠", "email": "Wangrz@ibcas.ac.cn", "work_for": "中国科学院植物研究所", "country": "中国" }, { "true_name": "马琳娜", "email": "maln@ibcas.ac.cn", "work_for": "中国科学院植物研究所植被与环境变化国家重点实验室", "country": "中国" }, { "true_name": "党振华", "email": "zhdang_1982@aliyun.com", "work_for": "内蒙古大学", "country": "中国" } ], "ds_managers": [ { "true_name": "王仁忠", "email": "Wangrz@ibcas.ac.cn", "work_for": "中国科学院植物研究所", "country": "中国" } ], "category": "生态" }