Effects and relationships of grazing intensity on multiple ecosystem services in the Inner Mongolian steppe
Effects and relationships of grazing intensity on multiple ecosystem services in the Inner Mongolian steppe
复制标题
内蒙古草原放牧强度对多种生态系统服务的影响及关系
DOI：
10.1016/j.scitotenv.2019.04.279
复制
发表时间：
2019-07-20
影响因子：
9.8
通讯作者：
Porter, John R.
中科院分区：
文献类型：
--
作者：
Fan, Fan;Liang, Cunzhu;Porter, John R.
草地生态系统是世界上最重要的陆地生态系统之一，为人类提供了重要的生态系统服务。内蒙古草原是我国北方重要的草原生态系统，占我国北方草原面积的13.5%，在首都京津冀周边地区发挥着重要的生态作用。不同利用方式下草地生态系统的定量化研究，对于维持草地生态系统的多样性和减少草地生态系统的损失具有重要意义。本研究采用4种放牧强度（放牧隔离、轻度放牧、中度放牧、重度放牧）进行了人工放牧试验。然后，我们量化的强度，8个不同的草原ES（1。牧草摄入量，HT; 2.生物多样性保护，BI; 3.土壤养分保持量，SN; 4土壤碳储量SC; 5.水土流失防治，SEP; 6.土壤水储量; 7.潜在养分循环; 8.从大气中吸收碳。CS）和总ES。皮尔逊系数和权衡指数被用来评估上述ES关系和ES之间的权衡程度。放牧强度显著影响草地的"抚育"、"养殖"和"供给"服务强度（p <0.05），但不影响"支持"服务强度。我们发现三种类型的关系（权衡，协同或中性）已在这项研究中发现。在"供应"和"调节"服务之间进行权衡。虽然GE管理层提出了显着更高的强度总ES（0.64）比LG（0.52），LG管理层显着削弱了“供应”和“监管”服务（权衡指数0.22）与GE（权衡指数11.02）之间的权衡。因此，我们的研究表明，LG是内蒙古草原最合适的草地利用方式。(C)2019 Elsevier B.V.版权所有。
Grassland ecosystems are one of the most important terrestrial ecosystems in the world, producing essential both goods and ecosystem services (ES) for human beings. The Inner Mongolian steppe is a major grassland ecosystem in Northern China, covering 13.5% of the northern Chinese grassland area, and playing important ecological roles for the adjacent region of the capital Beijing-Tianjin-Hebei. Quantification of grassland ES under the different utilization patterns is vital for the maintenance of multiple ES and mitigation against ES loss in this region. We made a manipulative experiment with four grazing intensities (grazing exclusion, GE; light grazing intensity, LG; medium grazing intensity, MG; heavy grazing intensity, HG). We then quantified the intensities of eight different grassland ES (1. herbage intake, HT; 2. biodiversity conservation, BI; 3. soil nutrient retention, SN; 4 soil carbon stocks SC; 5. soil erosion prevention, SEP; 6. soil water storage, SWC; 7. potential nutrient recycling, PNC; 8. carbon sequestration from atmosphere. CS) and total ES via a series of field measurements. Pearson coefficients and trade-offs index were used to access the above ES relationships and degree of trade-offs between ES. Grazing intensities significantly (p < 0.05) affected the grassland intensities of 'egulating', 'culture' and 'provisioning' services, but the 'supporting' services. We found three types of relationships (trade-offs, synergy or neutral) have been found in this study. Trade-offs occurred between 'provisioning' and 'regulating' services. Although GE management presented significantly higher intensity of total ES (0.64) than LG (0.52), LG management significantly weakened the trade-offs between 'provisioning' and 'regulating' services (Trade-offs index 0.22) in comparison with GE (Trade-offs index 11.02). Our study suggests, therefore, that LG is the most suitable grassland utilization practice in the Inner Mongolian steppe. (C) 2019 Elsevier B.V. All rights reserved.