{"type": "FeatureCollection", "features": [{"id": "10.5061/dryad.7wm37pw23", "type": "Feature", "geometry": null, "properties": {"license": "unspecified", "updated": "2026-09-20T16:19:27Z", "type": "Dataset", "created": "2024-06-13", "title": "Data from: Patterns and drivers of atmospheric nitrogen deposition retention in global forests", "description": "unspecified# Patterns and drivers of atmospheric nitrogen deposition retention in  global forests We searched the Web of Science Database for peer-reviewed  papers prior to February 22, 2023, using \u201cretention\u201d and \u201cN-15\u201d as the  keywords. The following criteria were applied to filter the peer-reviewed  papers: (1) Selection of 15N tracer experiments in forest ecosystems  conducted in the field, excluding laboratory incubation or greenhouse  experiments; (2) Selection of the absolute value of 15N retention obtained  from the 15N tracer experiment, excluding the relative value; (3)  Selection of 15N tracer experiments including N addition treatments,  excluding other treatments such as fire, phosphorus (P) addition,  potassium addition, etc. Due to limited data on litter layers and  understory vegetation components (i.e., shrubs, herbs, and grasses), the  15N retention of litter layers was combined into organic soil 15N  retention. Within the entire forest ecosystem, the 15N retention of  understory vegetation was not consider, focusing instead on the 15N  allocation among different plant organs (i.e., leaves, branches, stems,  roots). Ultimately, 408 observations were obtained from 56 peer-reviewed  papers, totaling 62 sites and 92 site-years. The study sites were  distributed across North America (25 sites), Europe (14 sites), Asia (14  sites), South America (3 sites), Oceania (4 sites), and Africa (2 sites),  covering tropical forests (5 sites), subtropical forests (10 sites),  temperate forests (42 sites), and boreal forests (5 sites). Raw data for  15N retention of different ecosystem compartments were obtained from  tables, figures, results, or supplementary information in the  peer-reviewed papers. When data were presented in figures, specific values  were extracted using Getdata software 2.22 (GetData, Kogarah, NSW, AUS).  Note: N_retention_data_v2 is based on N_retention_data_v1, with the  addition of raw data. 'XX' in the 'forest_type' and  '15N_tracer_type' sheets represents the 15N retention in  different ecosystem compartments (i.e., plant, leaf, branch, stem, root,  soil, organic soil, mineral soil, and total ecosystem).\u00a0'XX_n'  in the 'forest_type' and '15N_tracer_type' sheets  represents the sample size of 'XX'.\u00a0'XX_mean' in the  'forest_type' and '15N_tracer_type' sheets represents  the mean value of 'XX'.\u00a0'XX_se' in the  'forest_type' and '15N_tracer_type' sheet represents  the standard error of the mean value of 'XX'. 'NA' in  the 'raw_data' sheet represents unavailable observed data.  'MAT_CRU' and 'MAP_CRU' columns of the  'raw_data' sheet indicate that the missing values in the  references are extracted from the CRU.", "keywords": ["ammonium", "nitrogen retention", "15N tracer", "plant organs", "nitrate", "nitrogen allocation", "Forest", "FOS: Natural sciences"], "contacts": [{"organization": "Lin, Quanhong, Zhu, Jianxing, Wang, Qiufeng, Zhang, Qiongyu, Yu, Guirui,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5061/dryad.7wm37pw23"}, {"rel": "self", "type": "application/geo+json", "title": "10.5061/dryad.7wm37pw23", "name": "item", "description": "10.5061/dryad.7wm37pw23", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5061/dryad.7wm37pw23"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-06-23T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=nitrogen+allocation&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=nitrogen+allocation&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=nitrogen+allocation&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=nitrogen+allocation&offset=1", "hreflang": "en-US"}], "numberMatched": 1, "numberReturned": 1, "distributedFeatures": [], "timeStamp": "2026-09-20T16:56:06.724933Z"}