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首页> 外文期刊>Natural areas journal >Application of an Expert System Approach for Assessing Grassland Status in the U.S. Mexico Borderlands: Implications for Conservation and Management
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Application of an Expert System Approach for Assessing Grassland Status in the U.S. Mexico Borderlands: Implications for Conservation and Management

机译：专家系统方法在美国墨西哥边境地区评估草地状况的应用：对保护和管理的启示

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摘要

Grasslands around the world have experienced dramatic decline for more than a century. The spatial extent and condition of grasslands in many regions of the world are poorly understood because they lack conservation priority relative to other ecological systems. We developed a simple, yet broadly applicable rapid assessment expert system approach that can be used to assess these aspects of grassland status for improved conservation planning and management. Here we apply our approach to the semi-arid grasslands of the Arizona, New Mexico, and Mexico borderlands. We specifically used a combination of expert input and field verification. The accuracy of the expert input was 71%-77%. Native grasses dominate nearly 50% of identified grasslands. However, over two-thirds of these grasslands have experienced a moderate level of shrub encroachment. These areas may be restorable to open grassland with use of prescribed fire. Non-native perennial grasses are common to dominant on 12% of the study area. More than 67% of native grasslands occur on private and state land where there is little legal protection. In a region experiencing substantial development pressure, grasslands are at risk of becoming increasingly fragmented and vulnerable to non-native species invasion. Now, with our approach to assessing grassland status, conservation practitioners and partners are better positioned to protect and restore the remaining grasslands in the U.S.-Mexico borderlands and elsewhere.
机译：全世界的草原经历了一个多世纪的急剧下降。人们对世界许多地区的草原的空间范围和状况知之甚少，因为它们相对于其他生态系统而言缺乏保护重点。我们开发了一种简单但广泛适用的快速评估专家系统方法，该方法可用于评估草地状况的这些方面，以改善保护规划和管理。在这里，我们将我们的方法应用于亚利桑那州，新墨西哥州和墨西哥边境地区的半干旱草原。我们专门使用了专家输入和现场验证的组合。专家输入的准确性为71％-77％。本地草占已鉴定草地的近50％。但是，这些草原中有超过三分之二的灌木被侵蚀。使用指定的火源，这些地区可以恢复为开阔草原。在研究区域的12％上，非本地多年生禾本科草占主导地位。超过67％的本地草原位于没有法律保护的私有和国有土地上。在一个承受巨大发展压力的地区，草地正面临越来越零散的境地，容易受到非本地物种入侵的威胁。现在，通过我们评估草原状况的方法，保护从业人员和合作伙伴可以更好地保护和恢复美墨边境和其他地方的其余草原。

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