林地基本信息 Basic info
位置 Location：宁夏自治区灵武市白芨滩国家级保护区
Baijitan National Nature Reserve, Lingwu, Ningxia
面积 Area：1300亩/86.7hectares
树种 Species：柠条、花棒、沙拐枣以及沙蒿
Caragana Korshinskii Kom, Hedysarum scoparium, Artemisia ordosica and Calligonum mongolicum
图 1. 2023-NX林地航拍
Image 1. The aerial photo of Plot 2023-NX
林地大致情况 Overview of the Forest
图 2. 2023-NX林地地面照片
Image 2. The ground photo of Plot 2023-NX
2023年，百万植树计划宁夏项目继续与灵武市白芨滩防沙林场合作，在白芨滩保护区内总计治沙一千三百亩，栽植各类灌木共二十六万余株。
The Million Tree Project continued its desert control efforts in cooperation with Baijitan Tree Farm in 2023. Another 260,000 shrubs have been planted, covering a total area of 86.7 hectares in Baijitan Nature Reserve.
图 3. 2023-NX林地生长数据
Image 3. The growth data of Plot 2023-NX
在2024年，项目调查发现2023年林地中柠条存活率为60.56%，均高达到21厘米，平均冠幅13.19厘米，覆盖度为24.47%。存活率相比2023年已经有很大改善，受气候影响覆盖度有一定的波动。
In 2024, the forest survey found that the survival rate of the shrubs in 2023-NX forest site was 60.56%. The average height of the shrubs was 21 cm and the average radius was 13.19 cm. The results showed that the vegetation coverage of 2023-NX has some fluctuation in coverage due to climate, and survival rate is already much improved compared to 2023 forest survey.
生态调查说明 Forest Description
图 4. 宁夏各年份林地林地生物多样性指标
Image 4. Biodiversity Index of the Forest Sites Planted in Each Year
生态调查包含多样性指标及优势物种、植被结构、植被覆盖度这些方面。2024年生态调查覆盖8片林地，调查结果发现林地中生物多样性指标与林地本身立地条件有关。物种数量随种植年份增长呈现先增后减的趋势。但物种丰富度和均匀度与种植年份并不相关。优势种的变化与近几年的调查发现基本一致，初植后林地中优势种以一年生的沙米为主。在草方格治沙和种植灌木多年后，多年生草本和多年生灌木逐渐替代了沙米，意味着林地中小气候受到了造林工程的影响。
The 2024 Ningxia Forest survey covered 8 forest sites, investigating species diversity index, dominant species, vegetation structure and vegetation coverage. It revealed that the diversity was highly associated with the conditions of the forest sites. The changes in the amount of the
species had a tendency of increasing in the beginning and decreasing afterwards. No relation was found between the year of planting and the richness and evenness of the species. The findings on dominant species were coherent to the forest survey results of recent years. Agriophyllum squarrosum, as an annual plant was the dominant species in the forests in the early years. After straw grids were constructed and shrubs were planted, the perennial plants and shrubs took over, indicating that microclimate in the forests improved by the afforestation work.
图 5. 宁夏各年份林地林地植被结构变化
Image 5. Vegetation Structure of the Forest Sites Planted in Each Year in Ningxia
林地最初只有少量草本层，随着种植时间增长而发展为有较多草本层，后又因灌木层的生长，草本层逐渐衰退。这符合我们对植被生态系统演替的认识，说明宁夏林地在草方格固沙并种植灌木后，生态系统得到了修复。2024年调查中林地覆盖度整体上升，可能与今年较多降雨有关。但气候变化导致的降雨波动较大，极端天气气候事件风险加大，对本地生态影响都比较大。项目组将持续监测，累积更多相关数据。
There were initially few layers of herbs in the forest sites. After the afforestation, the herb layers were gradually replaced by multi-herb layers and then shrub layers. It was in coherence with our understanding of the ecological system. Overall, the ecosystem was restored after the straw grids constructed and shrubs planted in the forest sites. In 2024, the vegetation coverage of each forest sites all increased. This was very likely associated with the increase in rainfall. The climate change-induced rainfall was an unusual phenomenon. The risks of extreme weather events under climate change have been on the rise, which will affect the local ecosystem significantly. MTP team will keep monitoring and collecting data on it.
林地赞助商列表 Forest Sponsor List
