Comprehensive Study Guide on Rangeland Economics and Management Principles and Integrated Resource Management

Principles and Definitions of Rangeland Economics and Resource Management

Economics constitutes the foundational science concerning the production and distribution of goods and services to society. In the context of rangeland management, knowledge and application of economic principles, approaches, and models allow managers to achieve multiple objectives, specifically improving efficiency, reducing risk, and increasing equity. Basic goals of rangeland economics predicated on maximizing human welfare include economic growth, environmental sustainability, and the equitable distribution of income. Economic growth refers specifically to the expansion of the supply of goods and services available to the human population. Price stability serves as another critical goal, referring to the management of the economy so that periods of rapidly rising or falling prices for goods and services are minimized or avoided. In a market system, competition among producers serves to maintain a balance between price, supply, and demand. Through market mechanisms, consumers are able to obtain an optimum combination of goods and services relative to their income.

A distinction must be made between the two primary scales of economic study: microeconomics focuses on the behavior of individual components within the economy, whereas macroeconomics focuses on the economy as a whole. Projects are often evaluated using specific financial metrics, such as the Internal Rate of Return (IRR), which compares the rate of internal return for a project to the interest rate for the required funds. Other evaluative tools include Benefit-Cost Analysis and Present Net Worth. Government involvement in rangeland management often manifests through cost-sharing programs for activities such as brush control, range seeding, and water development. Strategic planning in agencies like the Bureau of Land Management (BLM) involves budgeting for concrete projects such as road improvement, water development, controlled burns, fences for rotational grazing systems, and range seedings.

Systematic Approaches to Resource Planning and Global Trade

Integrated resource planning is defined as a systematic approach to natural resource management. This contrasts with long-range planning, which specifically involves trend analysis, such as monitoring and predicting trends in resource supply and demand. Globalization, a dominant force in modern economics, is characterized by several key features: international trade, the integration of financial markets, and the free movement of labor and capital. Within this global framework, free trade is intended to improve human living conditions primarily by increasing the availability of goods and services.

One of the most significant historical developments in agricultural economics is the Green Revolution. This period, occurring in the mid-$20th$ century, was characterized by a massive increase in agricultural productivity through the use of improved crop varieties, fertilizers, irrigation, and modern farming techniques. The Green Revolution was essential for producing enough food for a growing world population. However, these techniques are heavily dependent on high inputs of fossil fuels for irrigation, cultivation, fertilization, harvesting, and transport. Unless the majority of the population returns to producing their own food, the mass production enabled by the Green Revolution remains vital to preventing hunger, particularly among the poor.

Ranching Profitability, Costs, and Market Cycles

Ranching profitability and efficiency are influenced by several factors, including cattle prices and business cycles, the specific location of the ranch, and the costs associated with range livestock production. Ranchers often restrict investment to the ranch itself due to several factors: a lack of liquidity, a lack of knowledge regarding alternative investments, and often more favorable returns from ranching compared to other known options. Historically, cattle price cycles are characterized by a predictable pattern of $6$ to $7$ up-years followed by $3$ to $5$ down-years.

Costs in rangeland production are categorized into fixed and variable costs. Fixed costs include depreciation, land taxes, and insurance. When considering the maximization of gross production per land unit, certain economic conditions are particularly favorable, such as when real interest rates on borrowed capital are low. When costs associated with animals increase, or when demand for meat and livestock prices decrease, land values tend to decrease accordingly.

Energy Impacts and Global Environmental Challenges

The price of oil has a direct and significant impact on rangeland management strategies. High oil prices make it financially ineffective to raise cattle using high inputs of harvested forage and feed grains; consequently, high energy costs increase the importance of rangelands for meat production. Conversely, low oil prices make it financially effective to raise cattle using high inputs of harvested forage and feed grains. Grain-fed meat production relies more heavily on fossil fuel inputs than rangeland beef cattle production.

Global warming, primarily caused by $CO_2$ emissions from human fossil fuel usage, presents significant challenges to agriculture. Adverse impacts include the occurrence of intense droughts followed by intense flooding. While some might suggest global warming could increase food production, the reality involves increased variability in regional temperature and precipitation regimes, as well as potential crop yield losses from insects and disease.

Economic Systems and Externalities

In a centrally planned or command economy (common in socialistic systems), the government makes all production and distribution decisions and controls the factors of production. While these systems promise full employment and the equitable distribution of income, historical evidence suggests they often lead to severe poverty for common citizens while high-level bureaucrats enjoy lavish lifestyles. Such economies often suffer from empty stores, long waits for basic necessities, low-quality goods, and poor distribution.

An externality is defined as the cost of an economic activity that is borne by a third party who was not part of the original transaction. Historical and environmental examples of externalities include the pollution of rivers and air by factories in the $1880s$, the soil erosion caused by over-farming practices during the Dust Bowl, and the severe overgrazing problems on public land in the late $1800s$.

Range Vegetation Manipulation and Improvement Practices

Improving rangeland productivity often involves the control of unwanted plants, revegetation, or fertilization, which can result in production increases of two-to-tenfold within $1$ to $3\,years$. Mechanical control methods, such as disking or chaining, may be necessary in dense stands where burning or chemical control is not feasible. These methods cause slight disturbance to the rangeland soil but provide a low degree of kill for shrubs that sprout below the surface of the ground. Hand-grubbing is an effective mechanical method, but it is best employed during the early invasion of unwanted plants rather than late invasion.

Chemical control involves the use of herbicides. Translocated herbicides, such as $2,4-D$, are applied to one part of a plant and carried to other parts via plant tissues. Plants are most sensitive to foliar sprays when they are growing vigorously and their leaves are fully expanded. While herbicides are useful, burning is considered one of the cheapest and most natural vegetation manipulation tools. Prescribed burning requires sufficient fuel (litter) to carry a ground fire. However, unplanned or poorly timed burns can be detrimental; for instance, unplanned winter burning in northeastern New Mexico changed shortgrass (blue grama) communities into midgrass (little bluestem and sideoats grama) communities within two years. This change is visible at the ecotone, or the sharp change in vegetation along the burn-line. Prescribed burning can also cause soil water repellency, which negatively influences infiltration.

Seeding, Fertilization, and Biological Control

When rangeland requires revegetation, drill seeding is the superior method of planting seed where site conditions permit. This is more effective than broadcasting, which involves scattering seed directly on the soil without coverage, or transplanting from nursery beds. For soil improvement, cool-season plant species respond most significantly to nitrogen fertilization during the late fall or early spring. Additionally, targeted grazing can be employed as a low-cost, low-risk, and natural approach to controlling certain noxious plant species.

Global Pastoralism and Developing Countries

In arid and semiarid regions, individuals who derive the majority of their income and sustenance from livestock grazing are known as pastoralists. These populations often face challenges related to commoditization, which involves the shift of pastoral households toward commercial products for sale. In many developing countries, communal grazing (notably in Africa) has resulted in the destruction of rangeland due to excessive livestock numbers. The remedies for these excessive livestock numbers are complex and not easily resolved. Furthermore, indiscriminant burning in these regions often destroys large amounts of forage that could have been utilized by livestock. When dealing with drought, a primary strategy for pastoralists is to reduce livestock numbers to protect the remaining resource base.

Questions & Discussion

Question: Discuss how centrally planned or command economies (socialistic economies) affect agriculture production and a country's economy. Response: Centrally planned economies involve government control over all production and distribution decisions, promising equity and full employment. However, history shows that higher-level bureaucrats often benefit while citizens live in poverty. These systems lead to empty stores, low-quality goods, and poor distribution, proving detrimental to the majority of the population.

Question: What is the "Green Revolution" with respect to agricultural economics? Response: The Green Revolution was a mid-$20th$ century period that greatly increased agricultural productivity through improved crop varieties, fertilizers, irrigation, and modern farming. It is essential for feeding the world population but depends heavily on fossil fuels. Without it, many, especially the poor, would face hunger unless they produced their own food.

Question: Explain how a well-planned prescribed burn can benefit wildlife. Response: A well-planned burn maintains a variety of vegetation and a highly diverse habitat. Techniques like patch burning are effective in creating structural diversity in the habitat, which enhances wildlife populations.

Question: Evaluate the effects of unplanned winter burning on rangelands. Response: Unplanned winter burning in northeastern New Mexico changed a shortgrass (blue grama) community into a midgrass community (little bluestem and sideoats grama) within two years. This successional change is clearly visible at the ecotone or burn-line.