etidronate 发表于 2025-3-26 21:18:59

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TEM 发表于 2025-3-27 03:12:25

Friederike Müller-Friemauth,Rainer Kühnncreased public awareness of the environment and increased destructive activity in the desert ecosystem. This chapter outlines all known studies (except that discussed in Chapter 15) and discusses the problems involved in reestablishing vegetation. While none of these studies has involved ORV areas

饮料 发表于 2025-3-27 05:30:44

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CLIFF 发表于 2025-3-27 12:43:36

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用手捏 发表于 2025-3-27 16:25:51

Control of Rills and Gullies in Off-Road Vehicle Traffic Areas, the balance is best described as dynamic equilibrium. It does not imply absolute equilibrium, but that adjustment to a new situation is attainable within a relatively short time, perhaps within a few years. Obviously, if considered in geologic time spans, dynamic equilibrium has not taken place, because land denudation is the long-term process.

Lobotomy 发表于 2025-3-27 21:31:05

History of Revegetation Studies in the California Desertsncreased public awareness of the environment and increased destructive activity in the desert ecosystem. This chapter outlines all known studies (except that discussed in Chapter 15) and discusses the problems involved in reestablishing vegetation. While none of these studies has involved ORV areas specifically, the problems appear to be the same.

枫树 发表于 2025-3-27 23:38:45

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通情达理 发表于 2025-3-28 04:57:13

IntroductionSome people perceive arid areas as “God-forsaken wasteland.” Bury and Luckenbach (Chapter 10) point out that some people are unaware of the rich life found in arid areas. Peter Aleshire (1979, p. 143) reports for . in Palm Springs that:

outrage 发表于 2025-3-28 06:35:24

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Feedback 发表于 2025-3-28 13:27:45

Springer Series on Environmental Managementhttp://image.papertrans.cn/e/image/312624.jpg
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查看完整版本: Titlebook: Environmental Effects of Off-Road Vehicles; Impacts and Manageme Robert H. Webb,Howard G. Wilshire Book 1983 Springer-Verlag New York Inc.