ABSTRACT

The Dehdez forest provides various services for both humans and animals, including food and timber production, carbon storage, air purification, wildlife habitation, and socio-cultural benefit. During the last decades, these ecosystems have considerably lost the fauna and flora because of economic expansion in the early 1990s in Iran. Hence, this study valued the main functions of the Dehdez forest. The preservation value of the study area was determined using the conditional valuation method (CVM). The Logit model was applied to determine the willingness to pay, and the parameters of the model were estimated according to the maximum accuracy. The findings revealed that local residents willing to annually pay about USD $ 0.087 million to protect the forest. In terms of rainwater infiltration and running water regulation, total economic value of the ecosystem was estimated about USD $ 6.58 million. The forest could store 12,452 kg nitrogen (N), potassium (K), and phosphorus (P) per hectare, about USD $ 2.17 million per year. The economic value of carbon sequestration and total net value of the productive functions were estimated about USD $ 55.04 and 0.42 million per year, respectively. Taken together, the findings showed that non-market functions constitute 99.3% of the total economic values of the study area, but the market functions do the rest value (i.e. 0.7%).

摘要

Dehdez 森林为人类和动物提供各种服务，包括食物和木材生产、碳储存、空气净化、野生动物栖息地和社会文化效益。在过去的几十年里，由于 1990 年代初期伊朗的经济扩张，这些生态系统已经大大丧失了动植物群。因此，本研究重视 Dehdez 森林的主要功能。研究区的保存价值采用条件评估法（CVM）确定。应用Logit模型确定支付意愿，并根据最大准确率估计模型参数。调查结果显示，当地居民愿意每年支付约 08.7 万美元来保护森林。在雨水渗透和自来水调节方面，该生态系统的总经济价值估计约为 658 万美元。森林每公顷可储存 12,452 公斤氮 (N)、钾 (K) 和磷 (P)，每年约 217 万美元。碳固存的经济价值和生产功能的总净值估计分别约为每年 5,504 美元和 42 万美元。综上所述，研究结果表明，非市场功能占研究区域总经济价值的 99.3%，但市场功能占其余价值（即 0.7%）。分别为每年 04 和 42 万。综上所述，研究结果表明，非市场功能占研究区域总经济价值的 99.3%，但市场功能占其余价值（即 0.7%）。分别为每年 04 和 42 万。综上所述，研究结果表明，非市场功能占研究区域总经济价值的 99.3%，但市场功能占其余价值（即 0.7%）。