半干旱和干旱荒漠化地区退化植被的逐步恢复无疑形成了不同的生境类型。大多数植物通过光合作用产生的能量固定碳来调节其生长，因此碳（C）和氮（N）在植被恢复过程中对植物生长、群落结构和功能起着至关重要的调节作用。然而，目前还不清楚生境类型如何影响沙质草地植被-土壤系统中碳和氮储存分配的动态变化。在此，我们研究了 2011 年、2013 年和 2015 年半固定沙丘（SFD）、固定沙丘（FD）和草地（G）三种生境类型演替阶段的植物群落特征和土壤特性。我们还考察了植被-土壤系统的碳和氮浓度，并估算了它们的碳和氮储量。从SFD到G，植被系统、土壤和植被-土壤系统的碳和氮储量显著增加。从2011年到2015年，SFD的枯落物碳和氮储量、SFD植被系统的氮储量以及FD土壤和植被-土壤系统的氮储量均有所增加，而FD的地上植物碳和氮储量在2011年高于2013年和2015年。在植被恢复过程中，大部分 C 和 N 被固存于土壤中。这些结果表明，植被-土壤系统中碳和氮储量分配的动态变化因生境类型而异。我们的研究表明，自给自足型生境在植被中的固氮率较高，而自给自足型生境在土壤中的固氮率较高。
", "ds_source": "在长期封闭的条件下，在每个栖息地的 6 个重复点内选择了与 SFD、FD 和 G 栖息地类型相对应的 18 个采样点，所有采样点之间的距离约为 0.5-8 千米，进行取样。
", "ds_process_way": "采用双因素方差分析（ANOVA）研究了生境类型、取样年份及其交互作用对各深度、植被系统和植被-土壤系统的地上生物量、枯落物质量、根系生物量、土壤容重、碳和氮浓度以及地上植物、枯落物、根系和土壤中的储量的影响。如果方差分析结果显著（p < .05），则采用最小显著差异（LSD）检验来比较不同生境类型或采样年份。所有统计分析均由 SPSS（19.0 版）进行。
", "ds_quality": "数据质量良好。
", "ds_acq_start_time": "2011-01-01 00:00:00", "ds_acq_end_time": "2015-12-31 00:00:00", "ds_acq_place": "科尔沁沙地", "ds_acq_lon_east": 120.7, "ds_acq_lat_south": 42.9, "ds_acq_lon_west": 120.7, "ds_acq_lat_north": 42.9, "ds_acq_alt_low": null, "ds_acq_alt_high": null, "ds_share_type": "open-access", "ds_total_size": 1010970, "ds_files_count": 4, "ds_format": ".xlsx", "ds_space_res": null, "ds_time_res": "", "ds_coordinate": "无", "ds_projection": "", "ds_thumbnail": "cf4f8941-e7dc-4736-bb54-abcdb497fd5c.png", "ds_thumb_from": 0, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "0a4269e1-65f4-45f1-aeba-88ea3068eebf", "ds_serv_man": "敏玉芳", "ds_serv_phone": "0931-4967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.4510" ], "quality_level": 3, "publish_time": "2023-07-24 17:59:04", "last_updated": "2025-06-30 16:20:36", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.ZENODO.DB3954.2023", "i18n": { "en": { "title": "Effects of habitat types on the dynamic changes of allocation in carbon and nitrogen storage of vegetation-soil system in sandy grasslands（2011-2015）", "ds_format": ".xlsx", "ds_source": "We selected 18 sampling sites corresponding to the SFD, FD, and G habitat types under the condition of long-term enclosure, within 6 replication sites in each habitat, and the distance among all sites was about 0.5–8 km,Perform sampling.
", "ds_quality": "The data quality is good.
", "ds_ref_way": "", "ds_abstract": "The progressive restoration of degraded vegetation in semiarid and arid desertified areas undoubtedly formed different habitat types. The most plants regulate their growth by fixing carbon with their energy deriving from photosynthesis, carbon (C) and nitrogen (N) play the crucial role in regulating plant growth, community structure and function in the vegetation restoration progress. However, it is still unclear how habitat types affect the dynamic changes of allocation in C and N storage of vegetation-soil system in sandy grasslands. Here, we investigated plant community characteristics and soil properties across three successional stages of habitat types: semi-fixed dunes (SFD), fixed dunes (FD) and grasslands (G) in 2011, 2013 and 2015. We also examined the C and N concentrations of vegetation-soil system, and estimated their C and N storage. The C and N storage of vegetation system, soil and vegetation-soil system remarkably increased from SFD to G. The litter C and N storage in SFD, N storage of vegetation system in SFD and N storage of soil and vegetation-soil system in FD increased from 2011 to 2015, while aboveground plant C and N storage of FD were higher in 2011 than in 2013 and 2015. Most of C and N were sequestered in soil in the vegetation restoration progress. These results suggest that the dynamic changes of allocation in C and N storage in vegetation-soil systems varied with habitat types. Our study highlights that SFD has higher N sequestration rate in vegetation, while FD has the considerably N sequestration rate in the soil.
", "ds_time_res": "", "ds_acq_place": "Horqin Sandy Land", "ds_space_res": "", "ds_projection": "", "ds_process_way": "The two-way analysis of variance (ANOVA) was used to examine the effects of habitat types, sampling years, and their interaction on aboveground biomass, litter mass, root biomass, soil bulk density, C and N concentrations, and storage in aboveground plant, litter, root, and soil at each depth, vegetation system, and vegetation–soil system. Least significant differences (LSD) test was used to compare the different habitat types or sampling years if the ANOVA was significant (p < .05). All statistical analyses were performed by SPSS (version 19.0).
", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_outside", "cstr_reg_from": "reg_outside", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "is_paper_in_submitting": false, "ds_topic_tags": [ "生境类型", "碳氮储量分配动态变化", "半固定沙丘（SFD）", "固定沙丘（FD）", "草地（G）" ], "ds_subject_tags": [ "自然地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "科尔沁沙地" ], "ds_time_tags": [ 2011, 2013, 2015 ], "ds_contributors": [ { "true_name": "吕朋", "email": "lvpengsnake@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "赵生龙", "email": "13619398146@163.com", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" }, { "true_name": "左小安", "email": "zuoxa@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "左小安", "email": "zuoxa@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "左小安", "email": "zuoxa@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "沙漠与荒漠化" }