Rangeland Ecology & Management最新文献_第9页

Corrigendum to “Spatiotemporal Assessment of Land Use Land Cover Change Detection and Normalized Difference Vegetation Index in Desert Area” [Rangeland Ecology & Management Volume 101, July 2025, Pages 126-139] “荒漠地区土地利用、土地覆盖变化检测与归一化植被指数时空评价”的勘误表[牧地生态与管理第101卷，2025年7月，页126-139]

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-10 DOI: 10.1016/j.rama.2025.06.003

Imran Aziz Tunio , Sheeraz Ahmed Memon , Habibullah Abbasi , Abdul Ahad Abro , Love Kumar , Muhammad Abdullah Tunio , Abdul Rehman Tunio , Jaten Kumar

引用次数: 0

The Degradation of Rangelands in Mongolia: An Actor-Centered Institutionalist Approach 蒙古牧场退化：以行动者为中心的制度主义研究方法

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-06-20 DOI: 10.1016/j.rama.2025.05.003

Javkhlan Nyamjav , Tanya Baycheva-Merger , Dietrich Schmidt-Vogt

In Mongolia, 65% of rangelands are degraded to variable extent compared to their reference state. Despite numerous efforts, a regulatory instrument in the form of a Rangeland Law has not yet been adopted and implemented. Previous studies have focused on the degradation of rangelands through investigations of vegetation, and of institutions responsible for land regulations. However, no study has yet attempted to analyze this regulatory gap (i.e., the absence of Rangeland Law), and studies on interlinkages between the institutional void and rangeland degradation continue to be rare in Mongolia. By employing a qualitative research method involving policy documents and semistructured interviews, this study addresses these gaps from a novel perspective by examining the institutional and actor-oriented factors that have impeded the adoption of the Rangeland Law for the past decades based on the Actor-Centered Institutionalism framework. The research findings indicate that institutional factors influence the adoption of the Rangeland Law more strongly than actor-oriented factors and that the challenges facing rangeland governance in Mongolia are deeply intertwined with political dynamics and vested interests. Addressing these challenges requires an effort to depoliticize the discourse, to prioritize sustainable management practices, and to safeguard the cultural heritage and well-being of Mongolia’s herding communities.

在蒙古，与参考状态相比，65%的牧场有不同程度的退化。尽管作出了许多努力，但仍未通过和执行以《牧场法》为形式的管制文书。以前的研究主要是通过调查植被和负责土地管理的机构来关注牧场的退化。然而，尚未有研究试图分析这一管理缺口（即没有牧地法），而且关于制度空白与牧地退化之间相互联系的研究在蒙古仍然很少。本研究采用定性研究方法，包括政策文件和半结构化访谈，在以行为主体为中心的制度主义框架下，通过研究过去几十年来阻碍《牧场法》通过的制度和行为主体导向因素，从一个新的角度解决了这些差距。研究结果表明，制度因素对《牧场法》实施的影响强于行为主体导向因素，蒙古牧场治理面临的挑战与政治动态和既得利益密切相关。应对这些挑战需要努力使话语非政治化，优先考虑可持续管理实践，并保护蒙古牧民社区的文化遗产和福祉。

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引用次数: 0

Deeper Seeding Allows Bunchgrass Establishment While the Pre-emergent Herbicide Indaziflam Controls Invasive Annual Grasses 较深的播种有利于束草的形成，而萌发前除草剂吲达西弗拉姆控制入侵的一年生草

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-17 DOI: 10.1016/j.rama.2025.06.009

Kirk W. Davies , Danielle R. Clenet , Peter J. Olsoy , Chad S. Boyd , Stella M. Copeland , Erik P. Hamerlynck , Rory C. O’Connor , Jon D. Bates

Restoration of annual grass-invaded rangelands is often a management priority. Pre-emergent herbicides are an effective restoration tool to reduce annual grasses but can negatively impact seeded vegetation. Hence, seeding is often delayed until herbicide activity has abated. With indaziflam, a pre-emergent with longer soil activity, seeding may need to be delayed for several years. It would be advantageous if seeded species could establish while indaziflam controls annual grasses, as competition with annual grasses would be limited, and forage production and vegetation cover of the soil surface would recover sooner. Seeding deeper in the soil may allow seeded species to largely avoid herbicide activity, but seeded species may struggle to emerge from greater seeding depths. We investigated seeding squirreltail and crested wheatgrass at 1-, 3-, 5-, and 7-cm seeding depths just prior to a fall indaziflam application at two sites in 2 yr. Seeding at ∼1-cm is the recommended practice for both bunchgrasses. Seedling density in late June was greater at the 3 and 5 cm seeding depths and likely greater at the 7 cm depths than at the 1-cm depth. Seedling height was greater at the 3-, 5-, and 7-cm depths than at the 1-cm depth. Seedling density and height did not vary among the 3-, 5-, and 7-cm depths. This suggests that indaziflam largely did not penetrate below the first centimeter or two of the soil the growing season after application. Seeding at depths of 3–7 cm is likely a viable strategy for allowing some seeded species to establish while indaziflam controls annual grasses. Additional evaluations across a gradient of soil and site characteristics, with different plant species and functional groups, and other pre-emergent herbicides are needed to refine this restoration strategy and identify its benefits and limitations.

恢复一年生草地通常是管理工作的重点。苗期除草剂是减少一年生草的有效恢复工具，但对种子植被有负面影响。因此，播种往往推迟到除草剂活性减弱。使用indaziflam，一种具有较长土壤活性的萌芽前植物，播种可能需要推迟几年。当茚地夫拉姆控制一年生草时，种子物种的建立将是有利的，因为与一年生草的竞争将受到限制，饲料产量和土壤表面植被覆盖将更快恢复。在土壤深处播种可能使种子物种在很大程度上避免除草剂的影响，但种子物种可能很难从更大的播种深度中出现。我们在两个地点进行了为期2年的鼠尾草和冠状小麦草播种试验，播种深度分别为1、3、5和7厘米，然后在秋季施用茚地芬。这两种禾草的推荐播种深度均为1厘米。6月下旬苗木密度在3和5 cm播种深度大于1 cm播种深度，7 cm播种深度可能大于1 cm播种深度。幼苗高度在3、5和7 cm处大于1 cm处。苗木密度和幼苗高度在3、5和7 cm深度间无显著差异。这表明，在施用后的生长季节，茚地夫拉姆基本上没有渗透到土壤的头一两厘米以下。当茚地夫拉姆控制一年生草时，在3-7厘米深处播种可能是一种可行的策略，可以使一些种子物种得以建立。需要对不同的土壤和场地特征、不同的植物种类和功能群以及其他苗期前除草剂进行进一步的评估，以完善这一恢复策略，并确定其优势和局限性。

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引用次数: 0

Monitoring and Prediction of Land Use and Land Cover Using Remote Sensing and CA-ANN 基于遥感和CA-ANN的土地利用和土地覆盖监测与预测

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-24 DOI: 10.1016/j.rama.2025.06.015

Frank Juma Ong’ondo , Shrinidhi Ambinakudige , Philista Adhiambo Malaki , Hafez Ahmad , Qingmin Meng , Domnic Kiprono Chesire , Kuria Anthony , Yahia Said

Human-driven land cover change poses a significant challenge to the sustainability of protected areas worldwide. Monitoring these dynamics and projecting future trends is crucial for effective conservation strategies. This study uses Nairobi National Park and its surrounding areas in Kenya as a case study to assess land cover change from 2016 to 2023 and project trends through 2040. We applied Geographic Information Systems (GIS) and remote sensing techniques, using Landsat imagery classified with the Random Forest (RF) algorithm in Google Earth Engine (GEE), to map land cover across eight classes. We projected future changes using a cellular automata–artificial neural network model, achieving 84.4% accuracy. Results revealed significant increases in built-up areas and agricultural land, accompanied by declines in forest, shrubland, woodland, water bodies, and bare soil. Projections indicate continued urban expansion and woodland growth, while agricultural land, bare soil, water bodies, and forests will decrease sharply. These findings highlight the urgent need for integrated land use planning and proactive conservation policies to manage rapid urban growth while preserving the ecological functions of protected areas and their surrounding landscapes.

人为驱动的土地覆盖变化对全球保护区的可持续性构成了重大挑战。监测这些动态和预测未来趋势对于有效的保护战略至关重要。本研究以肯尼亚内罗毕国家公园及其周边地区为例，评估了2016年至2023年的土地覆盖变化以及到2040年的项目趋势。我们应用地理信息系统（GIS）和遥感技术，利用谷歌Earth Engine （GEE）中随机森林（RF）算法分类的Landsat图像，绘制了8类土地覆盖图。我们使用元胞自动机-人工神经网络模型预测未来的变化，准确率达到84.4%。结果表明，建成区和农用地显著增加，森林、灌丛、林地、水体和裸地减少。预测表明，城市扩张和林地增长将继续，而农业用地、裸露土壤、水体和森林将急剧减少。这些发现突出表明，迫切需要进行综合土地利用规划和积极的保护政策，以管理快速的城市增长，同时保护保护区及其周围景观的生态功能。

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引用次数: 0

Exploring the Most Effective Form of Multimethod Rangeland Literacy Learning in Texas 探索德克萨斯州多方法牧场识字学习最有效的形式

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-10 DOI: 10.1016/j.rama.2025.06.011

Erika Sullivan , Sakina Dixon , Morgan L. Treadwell

Creating agents of change equipped with the knowledge of best management practices is crucial to the preservation of vulnerable grassland savannas facing woody plant encroachment. The goal of this study was to utilize a pre-post intervention design to determine the knowledge and attitude change associated with various outreach and education online, in-person, and hybrid approaches in adult and youth participants on rangeland literacy and woody plant management strategies, such as prescribed fire, multispecies grazing, and pyric herbivory. Key findings revealed that teaching methods that used web-based and blended learning modalities were most effective at improving knowledge and attitudes of participants. Additionally, we identified that 9th–12th age groups reaped the most benefits from fully web-based and blended learning approaches.

创建具有最佳管理实践知识的变革推动者对于保护面临木本植物侵蚀的脆弱草原至关重要。本研究的目的是利用干预前和干预后的设计来确定成人和青年参与者在牧场文化和木本植物管理策略（如规定火灾、多物种放牧和pyric草食）方面的知识和态度变化，这些知识和态度变化与各种在线、面对面和混合方法的外展和教育有关。主要研究结果显示，使用基于网络和混合学习模式的教学方法在提高参与者的知识和态度方面最有效。此外，我们发现9 - 12岁年龄组从完全基于网络和混合学习方法中获益最多。

引用次数: 0

Estimation of Plant Production in North-Central Rangelands of Iran: Emphasis on Response to Precipitation Thresholds 伊朗中北部牧场植物产量估算：重点关注对降水阈值的响应

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-05 DOI: 10.1016/j.rama.2025.05.006

Hamed Joneidi Jafari , Khaled Osati , Bing Liu , Nahid Azizi , Pouyan Dehghan Rahimabadi

Total annual precipitation cannot adequately represent the effective precipitation necessary for plant growth and production. In this research, forage production in north-central Iran rangelands was modeled by analyzing the effective precipitation during 10 water years, from 2005–2006 to 2014–2015. The production of key species, including Artemisia sieberi, Ephedra intermedia, Zygophyllum eurypterum, Stipa barbata, Scariola orientalis, Anabasis setifera, and annual plants, was measured. The relationship between forage production and total precipitation amounts, total precipitation exceeding 1, 3, 5, 7, and 10 mm, and temperature was quantified, and an optimal multivariate regression model was introduced to predict regional forage production for each species. Results revealed an average annual forage production of 57.71 kg · ha⁻¹. Notably, Z. eurypterum exhibited minimal production fluctuations, ranging from 16.1 to 18.4 kg · ha⁻¹, whereas annual species displayed a maximum coefficient of variation (79%). The most accurate model for estimating annual species forage production was based on April precipitation and April–May temperatures [Relative Root Mean Squared Error (RRMSE) = 0.19], which accounted for 98% of the variation (P value < 0.01). The results also showed that the most accurate linear model for estimating total forage production was based on March–June precipitation events exceeding 5 mm, with R = 0.92 in the calibration step and RRMSE = 0.07 in the validation step. The results can be used for estimating the annual forage production, determining grazing capacity, predicting future changes in forage production, and informing optimal rangeland management.

年总降水量不能充分代表植物生长和生产所需的有效降水。本研究通过分析2005-2006年至2014-2015年10个水年的有效降水，建立了伊朗中北部牧场牧草生产模型。测定了重点植物细叶蒿、中麻黄、大黄黄、刺针茅、东方丝虫草、石竹和一年生植物的产量。量化了牧草产量与总降水量、总降水量超过1、3、5、7、10 mm和温度之间的关系，并引入了最优多元回归模型来预测各物种的区域牧草产量。结果表明，平均年饲料产量为57.71 kg·ha−1。值得注意的是，大斑草的产量波动最小，在16.1 ~ 18.4 kg·ha−1之间，而一年生物种的变异系数最大（79%）。基于4月降水和4 - 5月气温估算年种草产量最准确的模型[相对均方根误差（RRMSE） = 0.19]，占变异量的98% (P值<；0.01)。结果还表明，基于3 - 6月5 mm以上降水事件估算牧草总产量的线性模型最准确，其校正步骤的R = 0.92，验证步骤的RRMSE = 0.07。研究结果可用于估算年牧草产量，确定放牧能力，预测未来牧草产量变化，为优化牧场管理提供依据。

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引用次数: 0

The Impact of Cooperatives on Livestock Production Efficiency in China 合作社对中国畜牧业生产效率的影响

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-09 DOI: 10.1016/j.rama.2025.06.002

Lijia Wang, Ziyun Wang, Zeng Tang, Haopeng Wu

The development of mechanisms to encourage herders' entry into cooperatives is considered as an important policy tool to increase production efficiency. This study examines whether cooperatives increase livestock production efficiency among herders in Xizang, China, by comparing technical efficiency (TE), cost efficiency (CE), and scale efficiency (SE) between cooperative members (CM) and non-members (NCM). Utilizing a two-stage DEA-Tobit model and survey data from 206 herders, the research evaluates the efficiency scores and identifies determinants of productivity. The results reveal that CM exhibit higher TE (0.705) and SE (0.297) but lower CE (0.250) compared to those of NCM (0.685, 0.206, and 0.323), respectively. CM efficiency is driven by the education of the head of household, the area of grassland, income from non-livestock and technical training, while NCM efficiency is shaped by age, Mandarin proficiency, family size and the quality of grassland under management. The findings underline the role of cooperatives in improving technical and scale efficiency, but also highlight the allocative inefficiencies in cost management. Policy implications include optimizing input allocation, strengthening technical support for cooperatives, promoting grassland transfer for scale economies, and prioritizing education and language training to bridge the efficiency gaps.

建立鼓励牧民加入合作社的机制被认为是提高生产效率的重要政策工具。本研究通过比较合作社成员（CM）和非成员（NCM）之间的技术效率（TE）、成本效率（CE）和规模效率（SE），考察了合作社是否提高了西藏省牧民的畜牧生产效率。利用两阶段DEA-Tobit模型和206名牧民的调查数据，研究评估了效率得分并确定了生产力的决定因素。结果表明，CM的TE（0.705）和SE（0.297）高于NCM(0.685、0.206和0.323)，CE（0.250）低于NCM。农牧合作效率受户主教育程度、草地面积、非畜牧业收入和技术培训等因素驱动，而农牧合作效率受年龄、普通话水平、家庭规模和经营草地质量等因素影响。调查结果强调了合作社在提高技术效率和规模效率方面的作用，但也强调了成本管理中分配效率低下的问题。政策影响包括优化投入配置，加强对合作社的技术支持，促进规模经济的草原转移，以及优先考虑教育和语言培训以缩小效率差距。

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引用次数: 0

Editorial Board/Journal Info 编辑委员会/期刊信息

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-08-28 DOI: 10.1016/S1550-7424(25)00117-4

引用次数: 0

Pollination Needs and Diverse Bees of a Prospective Fuelbreak Wildflower, Curlycup Gumweed (Grindelia squarrosa)(Asteraceae) 菊科植物卷叶菊的传粉需求及蜜蜂多样性

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-28 DOI: 10.1016/j.rama.2025.06.016

James H. Cane , Byron G. Love , Skyler Burrows , Alexander Fortin , Kelsey K. Graham

The arid sagebrush steppe of the US Intermountain West is prone to immense and costly wildfires. To disrupt the continuity of flammable vegetation, regional public land managers have begun clearing linear fuelbreaks that are currently seeded to a wind-pollinated Asian forb, forage kochia. A native fire-resistant alternative, Grindelia squarrosa, merits seeding with kochia. It readily colonizes disturbed sites and offers a profusion of late-season flowers to native bees. Field experiments showed that bee visitation is essential for its pollination. Compared with geitonogamous selfing, outcrossing yielded fourfold more filled achenes that were twice as likely to germinate. Collectively, our 15 regional surveys of bees foraging at G. squarrosa flowers were diverse (23 bee genera from five families) and all native, but for honeybees. Most of these species and three-fourths of their surveyed individuals nest below ground, where their progeny are safe from the surface heat of fire. Because G. squarrosa is a biennial, annual pollination by wild bees will be needed to assure ample seed to perpetuate populations sown in fuelbreaks of the US sagebrush steppe. In turn, G. squarrosa offers both pollen and nectar over many weeks that native bees avidly collect and cache for their progeny, as well as feeding future queens of resident social species.

美国西部山间干旱的山艾草草原容易发生巨大而昂贵的野火。为了破坏可燃植被的连续性，地区公共土地管理者已经开始清理线性的燃料中断，这些燃料中断目前种植在一种风媒传粉的亚洲草本植物——草食草上。一种本地的耐火替代品，粉砂，值得与小红花一起播种。它很容易在受干扰的地方定居，并为本地蜜蜂提供大量的晚季花朵。田间试验表明，蜜蜂的拜访对其授粉至关重要。与同族自交相比，异交产生的瘦果是同族自交的四倍，萌发的可能性是同族自交的两倍。总的来说，我们的15个区域调查显示，采食野蔷薇花的蜜蜂种类繁多（5科23个蜂属），除蜜蜂外均为本地蜜蜂。这些物种中的大多数和四分之三的被调查个体在地下筑巢，在那里它们的后代是安全的，不受地表火的影响。由于squarrosa是两年生植物，因此需要每年由野生蜜蜂授粉，以确保充足的种子，以使在美国山艾草草原的燃料中断中播种的种群永续。反过来，squarrosa在数周内提供花粉和花蜜，本土蜜蜂贪婪地收集和储存这些花粉和花蜜给它们的后代，以及喂养未来的常驻社会物种的女王。

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引用次数: 0

Fire Influences Patch Selection by Cattle More Strongly than Previous Grazing Events 与以往放牧事件相比，火灾对牛的斑块选择影响更大

IF 2.4 3区环境科学与生态学 Q2 ECOLOGY

Rangeland Ecology & Management

Pub Date : 2025-09-01 Epub Date: 2025-07-07 DOI: 10.1016/j.rama.2025.05.007

Esben L. Kjaer , Ryan F. Limb , Michael Hamel , Benjamin Geaumont , Jason P. Harmon , Torre J. Hovick , Kevin Sedivec

Understanding where animals graze and why they choose to graze there can be critical to rangeland and ecosystem management with misunderstandings of grazing distribution and behavior often being detrimental to management goals. Over time, grazing animals create grazing lawns that attract grazing animals due to ease of accessibility to more palatable regrowth. Similarly, fire can defoliate large areas of vegetation and promote new plant growth that is preferentially grazed by herbivores (i.e., pyric-herbivory in a patch-burn grazing framework). Grazer distribution in pyric-herbivory studies has been tracked through various metrics that produce valuable data. However, these data often lack precise information on what animals consume and do not account for differential plant production, limiting our ability to understand and apply pyric-herbivory to rangeland management through patch-burn grazing. Simultaneously monitoring plant biomass production and livestock grazing utilization would be the most comprehensive method to show site selection by grazing animals. To examine how previous grazing events influence grazing patterns, we collected data over 3 years on the utilization rate of patches by cattle in patch-burn grazing pastures and compared them to utilization rates in season-long grazed pastures. We found that regardless of management, grazing patterns were influenced by grazing in prior years. However, grazing in patch-burn pastures was more strongly influenced by fire than previous grazing events. Our results suggest that in the absence of additional disturbances, grazing patterns from previous years influence grazing patterns in the current year. However, disturbances that remove dead vegetation and promote regrowth, such as fire, override the influence of previous grazing patterns, modifying patch selection. Moving forward, these disturbances can be used to negate the effect of established grazing lawns and promote targeted grazing in areas with fresh regrowth, which benefits management goals.

了解动物在哪里吃草以及它们为什么选择在那里吃草对牧场和生态系统的管理至关重要，而对放牧分布和行为的误解往往不利于管理目标。随着时间的推移，放牧动物创造放牧草地，吸引放牧动物，因为更容易获得更美味的再生。同样，火可以使大面积的植被落叶，并促进草食动物优先放牧的新植物生长（即，在斑块燃烧放牧框架下的草食动物）。在草食研究中，食草动物的分布已经通过各种指标进行了跟踪，这些指标产生了有价值的数据。然而，这些数据往往缺乏关于动物消费什么的精确信息，也没有考虑到植物生产的差异，限制了我们理解和通过斑块燃烧放牧将热草食法应用于牧场管理的能力。同时监测植物生物量生产和牲畜放牧利用将是显示放牧动物选址的最全面的方法。为了研究以往的放牧事件对放牧模式的影响，我们收集了3年来斑烧放牧牧场牛对斑块的利用率数据，并将其与季节性放牧牧场的利用率进行了比较。我们发现，无论管理方式如何，放牧模式都受到前几年放牧的影响。然而，与以往放牧事件相比，草地放牧受火灾的影响更大。我们的研究结果表明，在没有额外干扰的情况下，前几年的放牧模式会影响今年的放牧模式。然而，去除死亡植被和促进再生的干扰，如火灾，覆盖了以前放牧模式的影响，改变了斑块的选择。展望未来，这些干扰可以用来抵消已建立的放牧草坪的影响，并促进在新生长的地区进行有针对性的放牧，这有利于管理目标的实现。

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引用次数: 0